Remove group attribute from problem common.py files

137 files changed, 0 insertions, 137 deletions

diff --git a/prolog/problems/clp_fd/gcd_3/common.py b/prolog/problems/clp_fd/gcd_3/common.py
index a24926f..7cd6623 100644
--- a/prolog/problems/clp_fd/gcd_3/common.py
+++ b/prolog/problems/clp_fd/gcd_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 149
-group = 'clp_fd'
 number = 61
 visible = True
 facts = None
diff --git a/prolog/problems/clp_fd/magic_1/common.py b/prolog/problems/clp_fd/magic_1/common.py
index 93286e7..17a9199 100644
--- a/prolog/problems/clp_fd/magic_1/common.py
+++ b/prolog/problems/clp_fd/magic_1/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 151
-group = 'clp_fd'
 number = 60
 visible = True
 facts = None
diff --git a/prolog/problems/clp_fd/puzzle_abc_3/common.py b/prolog/problems/clp_fd/puzzle_abc_3/common.py
index 42463a6..1563e1f 100644
--- a/prolog/problems/clp_fd/puzzle_abc_3/common.py
+++ b/prolog/problems/clp_fd/puzzle_abc_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 153
-group = 'clp_fd'
 number = 57
 visible = True
 facts = None
diff --git a/prolog/problems/clp_fd/puzzle_beth_1/common.py b/prolog/problems/clp_fd/puzzle_beth_1/common.py
index 3321d52..bf81396 100644
--- a/prolog/problems/clp_fd/puzzle_beth_1/common.py
+++ b/prolog/problems/clp_fd/puzzle_beth_1/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 155
-group = 'clp_fd'
 number = 56
 visible = True
 facts = None
diff --git a/prolog/problems/clp_fd/puzzle_momson_2/common.py b/prolog/problems/clp_fd/puzzle_momson_2/common.py
index 94e5aa2..9cef246 100644
--- a/prolog/problems/clp_fd/puzzle_momson_2/common.py
+++ b/prolog/problems/clp_fd/puzzle_momson_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 152
-group = 'clp_fd'
 number = 58
 visible = True
 facts = None
diff --git a/prolog/problems/clp_fd/puzzle_ratio_2/common.py b/prolog/problems/clp_fd/puzzle_ratio_2/common.py
index baf7c02..73b9234 100644
--- a/prolog/problems/clp_fd/puzzle_ratio_2/common.py
+++ b/prolog/problems/clp_fd/puzzle_ratio_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 154
-group = 'clp_fd'
 number = 59
 visible = True
 facts = None
diff --git a/prolog/problems/clp_fd/tobase_3/common.py b/prolog/problems/clp_fd/tobase_3/common.py
index 3a29dbe..5d160d7 100644
--- a/prolog/problems/clp_fd/tobase_3/common.py
+++ b/prolog/problems/clp_fd/tobase_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 150
-group = 'clp_fd'
 number = 62
 visible = True
 facts = None
diff --git a/prolog/problems/clp_r/bounding_box_3/common.py b/prolog/problems/clp_r/bounding_box_3/common.py
index dc6b047..94be5ee 100644
--- a/prolog/problems/clp_r/bounding_box_3/common.py
+++ b/prolog/problems/clp_r/bounding_box_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 157
-group = 'clp_r'
 number = 67
 visible = True
 facts = None
diff --git a/prolog/problems/clp_r/center_3/common.py b/prolog/problems/clp_r/center_3/common.py
index 340cd7f..5391180 100644
--- a/prolog/problems/clp_r/center_3/common.py
+++ b/prolog/problems/clp_r/center_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 158
-group = 'clp_r'
 number = 68
 visible = True
 facts = None
diff --git a/prolog/problems/clp_r/linear_opt_3/common.py b/prolog/problems/clp_r/linear_opt_3/common.py
index 35f582d..f6e8840 100644
--- a/prolog/problems/clp_r/linear_opt_3/common.py
+++ b/prolog/problems/clp_r/linear_opt_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 159
-group = 'clp_r'
 number = 63
 visible = True
 facts = None
diff --git a/prolog/problems/clp_r/max_sum_2/common.py b/prolog/problems/clp_r/max_sum_2/common.py
index 71c3005..d025090 100644
--- a/prolog/problems/clp_r/max_sum_2/common.py
+++ b/prolog/problems/clp_r/max_sum_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 156
-group = 'clp_r'
 number = 66
 visible = True
 facts = None
diff --git a/prolog/problems/clp_r/megabytes_2/common.py b/prolog/problems/clp_r/megabytes_2/common.py
index aefab2d..1f5bdd5 100644
--- a/prolog/problems/clp_r/megabytes_2/common.py
+++ b/prolog/problems/clp_r/megabytes_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 160
-group = 'clp_r'
 number = 65
 visible = True
 facts = None
diff --git a/prolog/problems/clp_r/turkey_3/common.py b/prolog/problems/clp_r/turkey_3/common.py
index 42f4119..b7bc7f4 100644
--- a/prolog/problems/clp_r/turkey_3/common.py
+++ b/prolog/problems/clp_r/turkey_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 161
-group = 'clp_r'
 number = 64
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/ab_2/common.py b/prolog/problems/dcg/ab_2/common.py
index f473a0b..b9109fc 100644
--- a/prolog/problems/dcg/ab_2/common.py
+++ b/prolog/problems/dcg/ab_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 162
-group = 'dcg'
 number = 69
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/digit_2/common.py b/prolog/problems/dcg/digit_2/common.py
index 5b31e04..571df40 100644
--- a/prolog/problems/dcg/digit_2/common.py
+++ b/prolog/problems/dcg/digit_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 164
-group = 'dcg'
 number = 71
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/expr_2/common.py b/prolog/problems/dcg/expr_2/common.py
index f5c4aa0..2420ebe 100644
--- a/prolog/problems/dcg/expr_2/common.py
+++ b/prolog/problems/dcg/expr_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 170
-group = 'dcg'
 number = 77
 visible = False
 facts = None
diff --git a/prolog/problems/dcg/expr_3/common.py b/prolog/problems/dcg/expr_3/common.py
index 651a1b9..10220a8 100644
--- a/prolog/problems/dcg/expr_3/common.py
+++ b/prolog/problems/dcg/expr_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 171
-group = 'dcg'
 number = 78
 visible = False
 facts = None
diff --git a/prolog/problems/dcg/flower_2/common.py b/prolog/problems/dcg/flower_2/common.py
index 5865da9..e28d10d 100644
--- a/prolog/problems/dcg/flower_2/common.py
+++ b/prolog/problems/dcg/flower_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 163
-group = 'dcg'
 number = 70
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/number_2/common.py b/prolog/problems/dcg/number_2/common.py
index 6d33e12..a05ca18 100644
--- a/prolog/problems/dcg/number_2/common.py
+++ b/prolog/problems/dcg/number_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 165
-group = 'dcg'
 number = 72
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/number_3/common.py b/prolog/problems/dcg/number_3/common.py
index 0e6f2b0..2977392 100644
--- a/prolog/problems/dcg/number_3/common.py
+++ b/prolog/problems/dcg/number_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 167
-group = 'dcg'
 number = 74
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/number_proper_2/common.py b/prolog/problems/dcg/number_proper_2/common.py
index c6b535b..a3e3592 100644
--- a/prolog/problems/dcg/number_proper_2/common.py
+++ b/prolog/problems/dcg/number_proper_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 166
-group = 'dcg'
 number = 73
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/paren_2/common.py b/prolog/problems/dcg/paren_2/common.py
index d5969a2..1d8f653 100644
--- a/prolog/problems/dcg/paren_2/common.py
+++ b/prolog/problems/dcg/paren_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 168
-group = 'dcg'
 number = 75
 visible = True
 facts = None
diff --git a/prolog/problems/dcg/paren_3/common.py b/prolog/problems/dcg/paren_3/common.py
index 4cda182..a905149 100644
--- a/prolog/problems/dcg/paren_3/common.py
+++ b/prolog/problems/dcg/paren_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 169
-group = 'dcg'
 number = 76
 visible = True
 facts = None
diff --git a/prolog/problems/denotational_semantics/algol_3/common.py b/prolog/problems/denotational_semantics/algol_3/common.py
index 1f5b196..cce9b69 100644
--- a/prolog/problems/denotational_semantics/algol_3/common.py
+++ b/prolog/problems/denotational_semantics/algol_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 176
-group = 'denotational_semantics'
 number = 83
 visible = True
 facts = None
diff --git a/prolog/problems/denotational_semantics/algol_for_3/common.py b/prolog/problems/denotational_semantics/algol_for_3/common.py
index bc0c3e8..4cf9373 100644
--- a/prolog/problems/denotational_semantics/algol_for_3/common.py
+++ b/prolog/problems/denotational_semantics/algol_for_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 178
-group = 'denotational_semantics'
 number = 85
 visible = True
 facts = None
diff --git a/prolog/problems/denotational_semantics/algol_if_3/common.py b/prolog/problems/denotational_semantics/algol_if_3/common.py
index fd750e0..0c52886 100644
--- a/prolog/problems/denotational_semantics/algol_if_3/common.py
+++ b/prolog/problems/denotational_semantics/algol_if_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 177
-group = 'denotational_semantics'
 number = 84
 visible = True
 facts = None
diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py b/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py
index e48d03f..d994039 100644
--- a/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py
+++ b/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 172
-group = 'denotational_semantics'
 number = 81
 visible = True
 facts = None
diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py b/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py
index f86a0c4..15dce6b 100644
--- a/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py
+++ b/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 173
-group = 'denotational_semantics'
 number = 82
 visible = True
 facts = 'denotational_semantics_aux__predicates'
diff --git a/prolog/problems/denotational_semantics/prog_listswap_2/common.py b/prolog/problems/denotational_semantics/prog_listswap_2/common.py
index 9a7c586..1f8b655 100644
--- a/prolog/problems/denotational_semantics/prog_listswap_2/common.py
+++ b/prolog/problems/denotational_semantics/prog_listswap_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 175
-group = 'denotational_semantics'
 number = 79
 visible = True
 facts = None
diff --git a/prolog/problems/denotational_semantics/prog_listswap_3/common.py b/prolog/problems/denotational_semantics/prog_listswap_3/common.py
index 2b32618..a40be29 100644
--- a/prolog/problems/denotational_semantics/prog_listswap_3/common.py
+++ b/prolog/problems/denotational_semantics/prog_listswap_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 174
-group = 'denotational_semantics'
 number = 80
 visible = True
 facts = 'denotational_semantics_aux__predicates'
diff --git a/prolog/problems/family_relations/ancestor_2/common.py b/prolog/problems/family_relations/ancestor_2/common.py
index 3226f34..7249ed8 100644
--- a/prolog/problems/family_relations/ancestor_2/common.py
+++ b/prolog/problems/family_relations/ancestor_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 100
-group = 'family_relations'
 number = 7
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/aunt_2/common.py b/prolog/problems/family_relations/aunt_2/common.py
index 2aeba9d..51bc99a 100644
--- a/prolog/problems/family_relations/aunt_2/common.py
+++ b/prolog/problems/family_relations/aunt_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 98
-group = 'family_relations'
 number = 5
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/brother_2/common.py b/prolog/problems/family_relations/brother_2/common.py
index 3fb685f..48b89fe 100644
--- a/prolog/problems/family_relations/brother_2/common.py
+++ b/prolog/problems/family_relations/brother_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 97
-group = 'family_relations'
 number = 4
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/connected_3/common.py b/prolog/problems/family_relations/connected_3/common.py
index 1221713..9c0bef7 100644
--- a/prolog/problems/family_relations/connected_3/common.py
+++ b/prolog/problems/family_relations/connected_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 102
-group = 'family_relations'
 number = 9
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/cousin_2/common.py b/prolog/problems/family_relations/cousin_2/common.py
index cd5cd38..8dc33b8 100644
--- a/prolog/problems/family_relations/cousin_2/common.py
+++ b/prolog/problems/family_relations/cousin_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 99
-group = 'family_relations'
 number = 6
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/descendant_2/common.py b/prolog/problems/family_relations/descendant_2/common.py
index 21de450..cfa1d37 100644
--- a/prolog/problems/family_relations/descendant_2/common.py
+++ b/prolog/problems/family_relations/descendant_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 101
-group = 'family_relations'
 number = 8
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/father_2/common.py b/prolog/problems/family_relations/father_2/common.py
index 50ac701..8eef44a 100644
--- a/prolog/problems/family_relations/father_2/common.py
+++ b/prolog/problems/family_relations/father_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 181
-group = 'family_relations'
 number = 2
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/grandparent_2/common.py b/prolog/problems/family_relations/grandparent_2/common.py
index fec7734..ee7b25b 100644
--- a/prolog/problems/family_relations/grandparent_2/common.py
+++ b/prolog/problems/family_relations/grandparent_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence, HintPopup
 import server.problems
 
 id = 95
-group = 'family_relations'
 number = 30
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/mother_2/common.py b/prolog/problems/family_relations/mother_2/common.py
index 18b3027..e3a883f 100644
--- a/prolog/problems/family_relations/mother_2/common.py
+++ b/prolog/problems/family_relations/mother_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 94
-group = 'family_relations'
 number = 1
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/family_relations/sister_2/common.py b/prolog/problems/family_relations/sister_2/common.py
index b2bf954..627648c 100644
--- a/prolog/problems/family_relations/sister_2/common.py
+++ b/prolog/problems/family_relations/sister_2/common.py
@@ -8,7 +8,6 @@ from server.hints import Hint, HintSequence
 import server.problems
 
 id = 96
-group = 'family_relations'
 number = 3
 visible = True
 facts = 'family_relations'
diff --git a/prolog/problems/license_plates/checklicenseplate_3/common.py b/prolog/problems/license_plates/checklicenseplate_3/common.py
index 5dc1c3c..c37e210 100644
--- a/prolog/problems/license_plates/checklicenseplate_3/common.py
+++ b/prolog/problems/license_plates/checklicenseplate_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 148
-group = 'license_plates'
 number = 55
 visible = True
 facts = None
diff --git a/prolog/problems/license_plates/firstminus_2/common.py b/prolog/problems/license_plates/firstminus_2/common.py
index ece4dd6..20376d2 100644
--- a/prolog/problems/license_plates/firstminus_2/common.py
+++ b/prolog/problems/license_plates/firstminus_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 147
-group = 'license_plates'
 number = 54
 visible = True
 facts = None
diff --git a/prolog/problems/license_plates/genexp_2/common.py b/prolog/problems/license_plates/genexp_2/common.py
index 170722b..ecdc772 100644
--- a/prolog/problems/license_plates/genexp_2/common.py
+++ b/prolog/problems/license_plates/genexp_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 146
-group = 'license_plates'
 number = 53
 visible = True
 facts = None
diff --git a/prolog/problems/license_plates/getdigits_2/common.py b/prolog/problems/license_plates/getdigits_2/common.py
index 20be22e..82fe033 100644
--- a/prolog/problems/license_plates/getdigits_2/common.py
+++ b/prolog/problems/license_plates/getdigits_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 144
-group = 'license_plates'
 number = 51
 visible = True
 facts = None
diff --git a/prolog/problems/license_plates/joindigits_2/common.py b/prolog/problems/license_plates/joindigits_2/common.py
index b89559f..9ebc037 100644
--- a/prolog/problems/license_plates/joindigits_2/common.py
+++ b/prolog/problems/license_plates/joindigits_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 145
-group = 'license_plates'
 number = 52
 visible = True
 facts = None
diff --git a/prolog/problems/lists/conc_3/common.py b/prolog/problems/lists/conc_3/common.py
index ef23d67..e83c454 100644
--- a/prolog/problems/lists/conc_3/common.py
+++ b/prolog/problems/lists/conc_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 104
-group = 'lists'
 number = 12
 visible = True
 facts = None
diff --git a/prolog/problems/lists/count_3/common.py b/prolog/problems/lists/count_3/common.py
index bf6f688..8a85079 100644
--- a/prolog/problems/lists/count_3/common.py
+++ b/prolog/problems/lists/count_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 120
-group = 'lists'
 number = 27
 visible = True
 facts = None
diff --git a/prolog/problems/lists/del_3/common.py b/prolog/problems/lists/del_3/common.py
index 81bbb75..755193c 100644
--- a/prolog/problems/lists/del_3/common.py
+++ b/prolog/problems/lists/del_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 105
-group = 'lists'
 number = 11
 visible = True
 facts = None
diff --git a/prolog/problems/lists/divide_3/common.py b/prolog/problems/lists/divide_3/common.py
index 337f702..c5744cc 100644
--- a/prolog/problems/lists/divide_3/common.py
+++ b/prolog/problems/lists/divide_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 115
-group = 'lists'
 number = 22
 visible = True
 facts = None
diff --git a/prolog/problems/lists/dup_2/common.py b/prolog/problems/lists/dup_2/common.py
index 7417006..e0a1001 100644
--- a/prolog/problems/lists/dup_2/common.py
+++ b/prolog/problems/lists/dup_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 110
-group = 'lists'
 number = 17
 visible = True
 facts = None
diff --git a/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py b/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py
index aaca8ec..601cd33 100644
--- a/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py
+++ b/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 116
-group = 'lists'
 number = 23
 visible = True
 facts = None
diff --git a/prolog/problems/lists/insert_3/common.py b/prolog/problems/lists/insert_3/common.py
index df4e16e..4892f4d 100644
--- a/prolog/problems/lists/insert_3/common.py
+++ b/prolog/problems/lists/insert_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 106
-group = 'lists'
 number = 13
 visible = True
 facts = None
diff --git a/prolog/problems/lists/len_2/common.py b/prolog/problems/lists/len_2/common.py
index 33fc223..7dbdc62 100644
--- a/prolog/problems/lists/len_2/common.py
+++ b/prolog/problems/lists/len_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 119
-group = 'lists'
 number = 26
 visible = True
 facts = None
diff --git a/prolog/problems/lists/max_2/common.py b/prolog/problems/lists/max_2/common.py
index 73c39a2..0e8f031 100644
--- a/prolog/problems/lists/max_2/common.py
+++ b/prolog/problems/lists/max_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 109
-group = 'lists'
 number = 16
 visible = True
 facts = None
diff --git a/prolog/problems/lists/memb_2/common.py b/prolog/problems/lists/memb_2/common.py
index 9e8b58e..3acbc15 100644
--- a/prolog/problems/lists/memb_2/common.py
+++ b/prolog/problems/lists/memb_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 103
-group = 'lists'
 number = 10
 visible = True
 facts = None
diff --git a/prolog/problems/lists/min_2/common.py b/prolog/problems/lists/min_2/common.py
index a5421d1..cc6ad9e 100644
--- a/prolog/problems/lists/min_2/common.py
+++ b/prolog/problems/lists/min_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 108
-group = 'lists'
 number = 15
 visible = True
 facts = None
diff --git a/prolog/problems/lists/palindrome_1/common.py b/prolog/problems/lists/palindrome_1/common.py
index 31998e2..5df4b87 100644
--- a/prolog/problems/lists/palindrome_1/common.py
+++ b/prolog/problems/lists/palindrome_1/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 112
-group = 'lists'
 number = 19
 visible = True
 facts = None
diff --git a/prolog/problems/lists/permute_2/common.py b/prolog/problems/lists/permute_2/common.py
index a1c66ff..2f37a3b 100644
--- a/prolog/problems/lists/permute_2/common.py
+++ b/prolog/problems/lists/permute_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 107
-group = 'lists'
 number = 14
 visible = True
 facts = None
diff --git a/prolog/problems/lists/rev_2/common.py b/prolog/problems/lists/rev_2/common.py
index c31e25b..ba72492 100644
--- a/prolog/problems/lists/rev_2/common.py
+++ b/prolog/problems/lists/rev_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 111
-group = 'lists'
 number = 18
 visible = True
 facts = None
diff --git a/prolog/problems/lists/shiftleft_2/common.py b/prolog/problems/lists/shiftleft_2/common.py
index f8e09f2..9a2fe0e 100644
--- a/prolog/problems/lists/shiftleft_2/common.py
+++ b/prolog/problems/lists/shiftleft_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 113
-group = 'lists'
 number = 20
 visible = True
 facts = None
diff --git a/prolog/problems/lists/shiftright_2/common.py b/prolog/problems/lists/shiftright_2/common.py
index e443332..5358935 100644
--- a/prolog/problems/lists/shiftright_2/common.py
+++ b/prolog/problems/lists/shiftright_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 114
-group = 'lists'
 number = 21
 visible = True
 facts = None
diff --git a/prolog/problems/lists/sublist_2/common.py b/prolog/problems/lists/sublist_2/common.py
index f9cef37..694bfcf 100644
--- a/prolog/problems/lists/sublist_2/common.py
+++ b/prolog/problems/lists/sublist_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 117
-group = 'lists'
 number = 24
 visible = True
 facts = None
diff --git a/prolog/problems/lists/sum_2/common.py b/prolog/problems/lists/sum_2/common.py
index 106f310..9c17e9c 100644
--- a/prolog/problems/lists/sum_2/common.py
+++ b/prolog/problems/lists/sum_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 118
-group = 'lists'
 number = 25
 visible = True
 facts = None
diff --git a/prolog/problems/old_exams/pascal_3/common.py b/prolog/problems/old_exams/pascal_3/common.py
index ebbc114..ddb3c6c 100644
--- a/prolog/problems/old_exams/pascal_3/common.py
+++ b/prolog/problems/old_exams/pascal_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 179
-group = 'old_exams'
 number = 86
 visible = False
 facts = None
diff --git a/prolog/problems/other/genlist_4/common.py b/prolog/problems/other/genlist_4/common.py
index 83f4b0e..3d8f326 100644
--- a/prolog/problems/other/genlist_4/common.py
+++ b/prolog/problems/other/genlist_4/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 127
-group = 'other'
 number = 34
 visible = False
 facts = None
diff --git a/prolog/problems/sets/diff_3/common.py b/prolog/problems/sets/diff_3/common.py
index 82a6fe9..fee93b2 100644
--- a/prolog/problems/sets/diff_3/common.py
+++ b/prolog/problems/sets/diff_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 130
-group = 'sets'
 number = 37
 visible = True
 facts = None
diff --git a/prolog/problems/sets/intersect_3/common.py b/prolog/problems/sets/intersect_3/common.py
index b2250e6..501cdf3 100644
--- a/prolog/problems/sets/intersect_3/common.py
+++ b/prolog/problems/sets/intersect_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 129
-group = 'sets'
 number = 36
 visible = True
 facts = None
diff --git a/prolog/problems/sets/is_subset_2/common.py b/prolog/problems/sets/is_subset_2/common.py
index 330ca21..4047146 100644
--- a/prolog/problems/sets/is_subset_2/common.py
+++ b/prolog/problems/sets/is_subset_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 132
-group = 'sets'
 number = 39
 visible = True
 facts = None
diff --git a/prolog/problems/sets/is_superset_2/common.py b/prolog/problems/sets/is_superset_2/common.py
index 356ca34..86e5dc7 100644
--- a/prolog/problems/sets/is_superset_2/common.py
+++ b/prolog/problems/sets/is_superset_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 131
-group = 'sets'
 number = 38
 visible = True
 facts = None
diff --git a/prolog/problems/sets/powerset_2/common.py b/prolog/problems/sets/powerset_2/common.py
index 1561eed..c825430 100644
--- a/prolog/problems/sets/powerset_2/common.py
+++ b/prolog/problems/sets/powerset_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 134
-group = 'sets'
 number = 41
 visible = True
 facts = None
diff --git a/prolog/problems/sets/subset_2/common.py b/prolog/problems/sets/subset_2/common.py
index 4cc2260..130d87b 100644
--- a/prolog/problems/sets/subset_2/common.py
+++ b/prolog/problems/sets/subset_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 133
-group = 'sets'
 number = 40
 visible = True
 facts = None
diff --git a/prolog/problems/sets/union_3/common.py b/prolog/problems/sets/union_3/common.py
index bd77d3a..2a14245 100644
--- a/prolog/problems/sets/union_3/common.py
+++ b/prolog/problems/sets/union_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 128
-group = 'sets'
 number = 35
 visible = True
 facts = None
diff --git a/prolog/problems/sorting/is_sorted_1/common.py b/prolog/problems/sorting/is_sorted_1/common.py
index 4bb3fa9..8feb549 100644
--- a/prolog/problems/sorting/is_sorted_1/common.py
+++ b/prolog/problems/sorting/is_sorted_1/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 121
-group = 'sorting'
 number = 28
 visible = True
 facts = None
diff --git a/prolog/problems/sorting/isort_2/common.py b/prolog/problems/sorting/isort_2/common.py
index 94f5f42..f2c4244 100644
--- a/prolog/problems/sorting/isort_2/common.py
+++ b/prolog/problems/sorting/isort_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 123
-group = 'sorting'
 number = 30
 visible = True
 facts = None
diff --git a/prolog/problems/sorting/pivoting_4/common.py b/prolog/problems/sorting/pivoting_4/common.py
index a8ff2f4..dd1a1a9 100644
--- a/prolog/problems/sorting/pivoting_4/common.py
+++ b/prolog/problems/sorting/pivoting_4/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 124
-group = 'sorting'
 number = 31
 visible = True
 facts = None
diff --git a/prolog/problems/sorting/quick_sort_2/common.py b/prolog/problems/sorting/quick_sort_2/common.py
index 9c2b261..4afc8fa 100644
--- a/prolog/problems/sorting/quick_sort_2/common.py
+++ b/prolog/problems/sorting/quick_sort_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 125
-group = 'sorting'
 number = 32
 visible = True
 facts = None
diff --git a/prolog/problems/sorting/sins_3/common.py b/prolog/problems/sorting/sins_3/common.py
index ba50e65..ab592ea 100644
--- a/prolog/problems/sorting/sins_3/common.py
+++ b/prolog/problems/sorting/sins_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 122
-group = 'sorting'
 number = 29
 visible = True
 facts = None
diff --git a/prolog/problems/sorting/slowest_sort_ever_2/common.py b/prolog/problems/sorting/slowest_sort_ever_2/common.py
index 267f06a..fc8f980 100644
--- a/prolog/problems/sorting/slowest_sort_ever_2/common.py
+++ b/prolog/problems/sorting/slowest_sort_ever_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 126
-group = 'sorting'
 number = 33
 visible = True
 facts = None
diff --git a/prolog/problems/trees/deletebt_3/common.py b/prolog/problems/trees/deletebt_3/common.py
index 0963d15..98ad95f 100644
--- a/prolog/problems/trees/deletebt_3/common.py
+++ b/prolog/problems/trees/deletebt_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 137
-group = 'trees'
 number = 47
 visible = True
 facts = None
diff --git a/prolog/problems/trees/depthbt_2/common.py b/prolog/problems/trees/depthbt_2/common.py
index d8b255d..85dfa27 100644
--- a/prolog/problems/trees/depthbt_2/common.py
+++ b/prolog/problems/trees/depthbt_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 140
-group = 'trees'
 number = 45
 visible = True
 facts = None
diff --git a/prolog/problems/trees/insertbt_3/common.py b/prolog/problems/trees/insertbt_3/common.py
index 1653183..f8ef004 100644
--- a/prolog/problems/trees/insertbt_3/common.py
+++ b/prolog/problems/trees/insertbt_3/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 138
-group = 'trees'
 number = 48
 visible = True
 facts = None
diff --git a/prolog/problems/trees/maxt_2/common.py b/prolog/problems/trees/maxt_2/common.py
index 264f5e2..280cb25 100644
--- a/prolog/problems/trees/maxt_2/common.py
+++ b/prolog/problems/trees/maxt_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 143
-group = 'trees'
 number = 50
 visible = True
 facts = None
diff --git a/prolog/problems/trees/memberbt_2/common.py b/prolog/problems/trees/memberbt_2/common.py
index e983b76..f5e5435 100644
--- a/prolog/problems/trees/memberbt_2/common.py
+++ b/prolog/problems/trees/memberbt_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 135
-group = 'trees'
 number = 42
 visible = True
 facts = None
diff --git a/prolog/problems/trees/membert_2/common.py b/prolog/problems/trees/membert_2/common.py
index 33a966d..c91371e 100644
--- a/prolog/problems/trees/membert_2/common.py
+++ b/prolog/problems/trees/membert_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 142
-group = 'trees'
 number = 49
 visible = True
 facts = None
diff --git a/prolog/problems/trees/mirrorbt_2/common.py b/prolog/problems/trees/mirrorbt_2/common.py
index c10f433..cc271cc 100644
--- a/prolog/problems/trees/mirrorbt_2/common.py
+++ b/prolog/problems/trees/mirrorbt_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 136
-group = 'trees'
 number = 43
 visible = True
 facts = None
diff --git a/prolog/problems/trees/numberbt_2/common.py b/prolog/problems/trees/numberbt_2/common.py
index a7499c2..7df71d8 100644
--- a/prolog/problems/trees/numberbt_2/common.py
+++ b/prolog/problems/trees/numberbt_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 139
-group = 'trees'
 number = 44
 visible = True
 facts = None
diff --git a/prolog/problems/trees/tolistbt_2/common.py b/prolog/problems/trees/tolistbt_2/common.py
index c9765df..e6c8ffd 100644
--- a/prolog/problems/trees/tolistbt_2/common.py
+++ b/prolog/problems/trees/tolistbt_2/common.py
@@ -1,7 +1,6 @@
 # coding=utf-8
 
 id = 141
-group = 'trees'
 number = 46
 visible = True
 facts = None
diff --git a/python/problems/functions/assign_numbers/common.py b/python/problems/functions/assign_numbers/common.py
index c9e87bf..effd061 100644
--- a/python/problems/functions/assign_numbers/common.py
+++ b/python/problems/functions/assign_numbers/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 225
-group = 'lists_and_for'
 number = 4
 visible = True
 
diff --git a/python/problems/functions/body_mass_index/common.py b/python/problems/functions/body_mass_index/common.py
index 22defeb..8e774be 100644
--- a/python/problems/functions/body_mass_index/common.py
+++ b/python/problems/functions/body_mass_index/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 226
-group = 'functions'
 number = 5
 visible = True
 
diff --git a/python/problems/functions/body_mass_index_2/common.py b/python/problems/functions/body_mass_index_2/common.py
index a88ad1c..c6cf2b3 100644
--- a/python/problems/functions/body_mass_index_2/common.py
+++ b/python/problems/functions/body_mass_index_2/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 227
-group = 'functions'
 number = 6
 visible = True
 
diff --git a/python/problems/functions/divisors/common.py b/python/problems/functions/divisors/common.py
index 0b6ba0d..afff7c5 100644
--- a/python/problems/functions/divisors/common.py
+++ b/python/problems/functions/divisors/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 230
-group = 'functions'
 number = 9
 visible = True
 
diff --git a/python/problems/functions/divisors_sum/common.py b/python/problems/functions/divisors_sum/common.py
index 256fdc3..142a448 100644
--- a/python/problems/functions/divisors_sum/common.py
+++ b/python/problems/functions/divisors_sum/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 231
-group = 'functions'
 number = 10
 visible = True
 
diff --git a/python/problems/functions/friendly_numbers/common.py b/python/problems/functions/friendly_numbers/common.py
index 6588242..fe121dc 100644
--- a/python/problems/functions/friendly_numbers/common.py
+++ b/python/problems/functions/friendly_numbers/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 233
-group = 'functions'
 number = 12
 visible = True
 
diff --git a/python/problems/functions/greatest/common.py b/python/problems/functions/greatest/common.py
index e6b7139..726fa88 100644
--- a/python/problems/functions/greatest/common.py
+++ b/python/problems/functions/greatest/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 195
-group = 'functions'
 number = 1
 visible = True
 
diff --git a/python/problems/functions/greatest_absolutist/common.py b/python/problems/functions/greatest_absolutist/common.py
index 564d0c8..3226b87 100644
--- a/python/problems/functions/greatest_absolutist/common.py
+++ b/python/problems/functions/greatest_absolutist/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 196
-group = 'functions'
 number = 2
 visible = True
 
diff --git a/python/problems/functions/greatest_negative/common.py b/python/problems/functions/greatest_negative/common.py
index 7ab3aca..72754e2 100644
--- a/python/problems/functions/greatest_negative/common.py
+++ b/python/problems/functions/greatest_negative/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 197
-group = 'functions'
 number = 3
 visible = True
 
diff --git a/python/problems/functions/palindrome/common.py b/python/problems/functions/palindrome/common.py
index 9bd82f4..eec8211 100644
--- a/python/problems/functions/palindrome/common.py
+++ b/python/problems/functions/palindrome/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 228
-group = 'functions'
 number = 7
 visible = True
 
diff --git a/python/problems/functions/palindromic_numbers/common.py b/python/problems/functions/palindromic_numbers/common.py
index b649719..6f49896 100644
--- a/python/problems/functions/palindromic_numbers/common.py
+++ b/python/problems/functions/palindromic_numbers/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 229
-group = 'functions'
 number = 8
 visible = True
 
diff --git a/python/problems/functions/perfect_numbers/common.py b/python/problems/functions/perfect_numbers/common.py
index 64acb23..72267e6 100644
--- a/python/problems/functions/perfect_numbers/common.py
+++ b/python/problems/functions/perfect_numbers/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 232
-group = 'functions'
 number = 11
 visible = True
 
diff --git a/python/problems/functions/prime_numbers/common.py b/python/problems/functions/prime_numbers/common.py
index 6806a08..33eb134 100644
--- a/python/problems/functions/prime_numbers/common.py
+++ b/python/problems/functions/prime_numbers/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 234
-group = 'functions'
 number = 13
 visible = True
 
diff --git a/python/problems/functions_and_modules/all/common.py b/python/problems/functions_and_modules/all/common.py
index e87aa74..a02cb4b 100644
--- a/python/problems/functions_and_modules/all/common.py
+++ b/python/problems/functions_and_modules/all/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 238
-group = 'functions_and_modules'
 number = 4
 visible = True
 
diff --git a/python/problems/functions_and_modules/any/common.py b/python/problems/functions_and_modules/any/common.py
index a96ae04..9d0d0d2 100644
--- a/python/problems/functions_and_modules/any/common.py
+++ b/python/problems/functions_and_modules/any/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 239
-group = 'functions_and_modules'
 number = 4
 visible = True
 
diff --git a/python/problems/functions_and_modules/caesar_cipher/common.py b/python/problems/functions_and_modules/caesar_cipher/common.py
index 3c53369..497ce34 100644
--- a/python/problems/functions_and_modules/caesar_cipher/common.py
+++ b/python/problems/functions_and_modules/caesar_cipher/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 243
-group = 'functions_and_modules'
 number = 9
 visible = True
 
diff --git a/python/problems/functions_and_modules/dominoes/common.py b/python/problems/functions_and_modules/dominoes/common.py
index 4a0f439..9a46a78 100644
--- a/python/problems/functions_and_modules/dominoes/common.py
+++ b/python/problems/functions_and_modules/dominoes/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 240
-group = 'functions_and_modules'
 number = 6
 visible = True
 
diff --git a/python/problems/functions_and_modules/largest_sublist/common.py b/python/problems/functions_and_modules/largest_sublist/common.py
index 90e3ae4..237b817 100644
--- a/python/problems/functions_and_modules/largest_sublist/common.py
+++ b/python/problems/functions_and_modules/largest_sublist/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 242
-group = 'functions_and_modules'
 number = 8
 visible = True
 
diff --git a/python/problems/functions_and_modules/lists_sum/common.py b/python/problems/functions_and_modules/lists_sum/common.py
index d6ba72f..c62bce1 100644
--- a/python/problems/functions_and_modules/lists_sum/common.py
+++ b/python/problems/functions_and_modules/lists_sum/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 241
-group = 'functions_and_modules'
 number = 7
 visible = True
 
diff --git a/python/problems/functions_and_modules/longest_word/common.py b/python/problems/functions_and_modules/longest_word/common.py
index 3ddb269..b4fabc1 100644
--- a/python/problems/functions_and_modules/longest_word/common.py
+++ b/python/problems/functions_and_modules/longest_word/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 235
-group = 'functions_and_modules'
 number = 1
 visible = True
 
diff --git a/python/problems/functions_and_modules/map/common.py b/python/problems/functions_and_modules/map/common.py
index ace0a09..93ba8ac 100644
--- a/python/problems/functions_and_modules/map/common.py
+++ b/python/problems/functions_and_modules/map/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 245
-group = 'functions_and_modules'
 number = 11
 visible = True
 
diff --git a/python/problems/functions_and_modules/multiplicative_range/common.py b/python/problems/functions_and_modules/multiplicative_range/common.py
index 0cb2fef..9b892e6 100644
--- a/python/problems/functions_and_modules/multiplicative_range/common.py
+++ b/python/problems/functions_and_modules/multiplicative_range/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 244
-group = 'functions_and_modules'
 number = 10
 visible = True
 
diff --git a/python/problems/functions_and_modules/similarity/common.py b/python/problems/functions_and_modules/similarity/common.py
index d71137e..3a6df99 100644
--- a/python/problems/functions_and_modules/similarity/common.py
+++ b/python/problems/functions_and_modules/similarity/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 236
-group = 'functions_and_modules'
 number = 2
 visible = True
 
diff --git a/python/problems/functions_and_modules/suspicious_words/common.py b/python/problems/functions_and_modules/suspicious_words/common.py
index e6e119a..89c1a88 100644
--- a/python/problems/functions_and_modules/suspicious_words/common.py
+++ b/python/problems/functions_and_modules/suspicious_words/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 237
-group = 'functions_and_modules'
 number = 3
 visible = True
 
diff --git a/python/problems/introduction/average/common.py b/python/problems/introduction/average/common.py
index c61f7e6..28c7a7e 100644
--- a/python/problems/introduction/average/common.py
+++ b/python/problems/introduction/average/common.py
@@ -6,7 +6,6 @@ from server.hints import Hint
 
 
 id = 189
-group = 'introduction'
 number = 4
 visible = True
 
diff --git a/python/problems/introduction/ballistics/common.py b/python/problems/introduction/ballistics/common.py
index afb84b6..8cb5c2d 100644
--- a/python/problems/introduction/ballistics/common.py
+++ b/python/problems/introduction/ballistics/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 187
-group = 'introduction'
 number = 3
 visible = True
 
diff --git a/python/problems/introduction/fahrenheit_to_celsius/common.py b/python/problems/introduction/fahrenheit_to_celsius/common.py
index 918c643..10a1067 100644
--- a/python/problems/introduction/fahrenheit_to_celsius/common.py
+++ b/python/problems/introduction/fahrenheit_to_celsius/common.py
@@ -6,7 +6,6 @@ from server.hints import Hint
 import re
 
 id = 180
-group = 'introduction'
 number = 1
 visible = True
 
diff --git a/python/problems/introduction/fast_fingers/common.py b/python/problems/introduction/fast_fingers/common.py
index dc04dcf..754679d 100644
--- a/python/problems/introduction/fast_fingers/common.py
+++ b/python/problems/introduction/fast_fingers/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 190
-group = 'introduction'
 number = 5
 visible = True
 
diff --git a/python/problems/introduction/fast_fingers_2/common.py b/python/problems/introduction/fast_fingers_2/common.py
index af4439c..c738d45 100644
--- a/python/problems/introduction/fast_fingers_2/common.py
+++ b/python/problems/introduction/fast_fingers_2/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 191
-group = 'introduction'
 number = 6
 visible = True
 
diff --git a/python/problems/introduction/pythagorean_theorem/common.py b/python/problems/introduction/pythagorean_theorem/common.py
index ed49b1a..cebae68 100644
--- a/python/problems/introduction/pythagorean_theorem/common.py
+++ b/python/problems/introduction/pythagorean_theorem/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 188
-group = 'introduction'
 number = 2
 visible = True
 
diff --git a/python/problems/lists_and_for/calculator_polish/common.py b/python/problems/lists_and_for/calculator_polish/common.py
index 7ea25ce..cb89a50 100644
--- a/python/problems/lists_and_for/calculator_polish/common.py
+++ b/python/problems/lists_and_for/calculator_polish/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 224
-group = 'lists_and_for'
 number = 10
 visible = True
 
diff --git a/python/problems/lists_and_for/contains_42/common.py b/python/problems/lists_and_for/contains_42/common.py
index d4c4af8..fb2089e 100644
--- a/python/problems/lists_and_for/contains_42/common.py
+++ b/python/problems/lists_and_for/contains_42/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 193
-group = 'lists_and_for'
 number = 1
 visible = True
 
diff --git a/python/problems/lists_and_for/contains_multiples/common.py b/python/problems/lists_and_for/contains_multiples/common.py
index 4712106..59a5743 100644
--- a/python/problems/lists_and_for/contains_multiples/common.py
+++ b/python/problems/lists_and_for/contains_multiples/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 219
-group = 'lists_and_for'
 number = 5
 visible = True
 
diff --git a/python/problems/lists_and_for/contains_string/common.py b/python/problems/lists_and_for/contains_string/common.py
index 1f19d7f..62fef4e 100644
--- a/python/problems/lists_and_for/contains_string/common.py
+++ b/python/problems/lists_and_for/contains_string/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 194
-group = 'lists_and_for'
 number = 2
 visible = True
 
diff --git a/python/problems/lists_and_for/counting/common.py b/python/problems/lists_and_for/counting/common.py
index 2d59182..73d0071 100644
--- a/python/problems/lists_and_for/counting/common.py
+++ b/python/problems/lists_and_for/counting/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 203
-group = 'lists_and_for'
 number = 3
 visible = True
 
diff --git a/python/problems/lists_and_for/divisors/common.py b/python/problems/lists_and_for/divisors/common.py
index 89092eb..a99246b 100644
--- a/python/problems/lists_and_for/divisors/common.py
+++ b/python/problems/lists_and_for/divisors/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 204
-group = 'lists_and_for'
 number = 20
 visible = True
 
diff --git a/python/problems/lists_and_for/divisors_sum/common.py b/python/problems/lists_and_for/divisors_sum/common.py
index c557278..1d11410 100644
--- a/python/problems/lists_and_for/divisors_sum/common.py
+++ b/python/problems/lists_and_for/divisors_sum/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 216
-group = 'lists_and_for'
 number = 21
 visible = True
 
diff --git a/python/problems/lists_and_for/every_third/common.py b/python/problems/lists_and_for/every_third/common.py
index 6f42663..2d5b907 100644
--- a/python/problems/lists_and_for/every_third/common.py
+++ b/python/problems/lists_and_for/every_third/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 220
-group = 'lists_and_for'
 number = 6
 visible = True
 
diff --git a/python/problems/lists_and_for/perfect_numbers/common.py b/python/problems/lists_and_for/perfect_numbers/common.py
index 2628fab..9a48967 100644
--- a/python/problems/lists_and_for/perfect_numbers/common.py
+++ b/python/problems/lists_and_for/perfect_numbers/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 217
-group = 'lists_and_for'
 number = 22
 visible = True
 
diff --git a/python/problems/lists_and_for/places/common.py b/python/problems/lists_and_for/places/common.py
index 0a90771..e7d1adf 100644
--- a/python/problems/lists_and_for/places/common.py
+++ b/python/problems/lists_and_for/places/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 218
-group = 'lists_and_for'
 number = 4
 visible = True
 
diff --git a/python/problems/lists_and_for/prefix/common.py b/python/problems/lists_and_for/prefix/common.py
index 1198e65..cd649af 100644
--- a/python/problems/lists_and_for/prefix/common.py
+++ b/python/problems/lists_and_for/prefix/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 221
-group = 'lists_and_for'
 number = 7
 visible = True
 
diff --git a/python/problems/lists_and_for/split_word/common.py b/python/problems/lists_and_for/split_word/common.py
index 0f5c5b9..6031b19 100644
--- a/python/problems/lists_and_for/split_word/common.py
+++ b/python/problems/lists_and_for/split_word/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 222
-group = 'lists_and_for'
 number = 8
 visible = True
 
diff --git a/python/problems/lists_and_for/substrings/common.py b/python/problems/lists_and_for/substrings/common.py
index bdc356a..8128797 100644
--- a/python/problems/lists_and_for/substrings/common.py
+++ b/python/problems/lists_and_for/substrings/common.py
@@ -6,7 +6,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 223
-group = 'lists_and_for'
 number = 9
 visible = True
 
diff --git a/python/problems/while_and_if/buy_five/common.py b/python/problems/while_and_if/buy_five/common.py
index ba44f5b..a96b2b0 100644
--- a/python/problems/while_and_if/buy_five/common.py
+++ b/python/problems/while_and_if/buy_five/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 185
-group = 'while_and_if'
 number = 1
 visible = True
 
diff --git a/python/problems/while_and_if/checking_account/common.py b/python/problems/while_and_if/checking_account/common.py
index ee1e3ee..002003f 100644
--- a/python/problems/while_and_if/checking_account/common.py
+++ b/python/problems/while_and_if/checking_account/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 200
-group = 'while_and_if'
 number = 5
 visible = True
 
diff --git a/python/problems/while_and_if/competition/common.py b/python/problems/while_and_if/competition/common.py
index fff96ed..8d2c098 100644
--- a/python/problems/while_and_if/competition/common.py
+++ b/python/problems/while_and_if/competition/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 192
-group = 'while_and_if'
 number = 2
 visible = True
 
diff --git a/python/problems/while_and_if/consumers_anonymous/common.py b/python/problems/while_and_if/consumers_anonymous/common.py
index b955f49..895d985 100644
--- a/python/problems/while_and_if/consumers_anonymous/common.py
+++ b/python/problems/while_and_if/consumers_anonymous/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 201
-group = 'while_and_if'
 number = 6
 visible = True
 
diff --git a/python/problems/while_and_if/minimax/common.py b/python/problems/while_and_if/minimax/common.py
index dcfb311..d853058 100644
--- a/python/problems/while_and_if/minimax/common.py
+++ b/python/problems/while_and_if/minimax/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 199
-group = 'while_and_if'
 number = 4
 visible = True
 
diff --git a/python/problems/while_and_if/top_shop/common.py b/python/problems/while_and_if/top_shop/common.py
index 887d43e..02855ec 100644
--- a/python/problems/while_and_if/top_shop/common.py
+++ b/python/problems/while_and_if/top_shop/common.py
@@ -5,7 +5,6 @@ from python.util import has_token_sequence, string_almost_equal, \
 from server.hints import Hint
 
 id = 198
-group = 'while_and_if'
 number = 3
 visible = True
 
diff --git a/robot/problems/introduction/forward/common.py b/robot/problems/introduction/forward/common.py
index 5023d7f..c82b0eb 100644
--- a/robot/problems/introduction/forward/common.py
+++ b/robot/problems/introduction/forward/common.py
@@ -3,7 +3,6 @@
 from server.hints import Hint
 
 id = 202
-group = 'introduction'
 number = 1
 visible = True