From e63627ad942a7d2c9eebb86f15c96191e7408eb8 Mon Sep 17 00:00:00 2001 From: Martin Date: Mon, 5 Oct 2015 11:57:31 +0200 Subject: Added problem "counting". Some other small text corrections. --- python/problems/lists_and_for/contains_42/sl.py | 18 ++-- .../problems/lists_and_for/contains_string/sl.py | 9 +- python/problems/lists_and_for/counting/common.py | 109 +++++++++++++++++++++ python/problems/lists_and_for/counting/en.py | 16 +++ python/problems/lists_and_for/counting/sl.py | 90 +++++++++++++++++ .../while_and_if/consumers_anonymous/common.py | 20 ++-- .../while_and_if/consumers_anonymous/sl.py | 10 +- 7 files changed, 253 insertions(+), 19 deletions(-) create mode 100644 python/problems/lists_and_for/counting/common.py create mode 100644 python/problems/lists_and_for/counting/en.py create mode 100644 python/problems/lists_and_for/counting/sl.py (limited to 'python/problems') diff --git a/python/problems/lists_and_for/contains_42/sl.py b/python/problems/lists_and_for/contains_42/sl.py index 9477e29..fe6b57e 100644 --- a/python/problems/lists_and_for/contains_42/sl.py +++ b/python/problems/lists_and_for/contains_42/sl.py @@ -19,10 +19,12 @@ Seveda mora program delati za poljubne sezname in ne samo za seznam iz primera.< ''' for_loop = ['''\ -

Čez elemente v seznamu se najlažje sprehodimo s for zanko. +

Pregledati bo treba vse elemente v seznamu xs''', + '''\ +

Najlažje bo s for zanko. ''', '''\ -

Poskusi, kaj naredita naslednji dve vrstici:

+

Poskusii naslednji dve vrstici:

 for x in xs:
     print (x)
@@ -30,21 +32,25 @@ for x in xs:
              '''\
 
V zgornjem primeru z zanko for Pythonu naročimo naj se sprehodi čez seznam xs
 in na vsakem koraku trenutni element seznama shrani v spremenljivko x.
-Kaj naj Python naredi s to spremenljivko, mu naročimo v zamaknjenih vrsticah.
+Kaj naj Python naredi s to spremenljivko, je zapisano v zamaknjenih vrsticah.
 Tokrat vrednost le izpišemo.
''']
 
 if_clause = ['''\
-
Poglej, ali je število 42? Uporabite pogojni stavek if!
''',
+
Preveri, ali imamo število 42?
''',
+             '''\
+
Uporabi pogojni stavek if!
''',
              '''\
 
 if x == 42:
 
''']
 
 seen_42 = ['''\
-
Kako si lahko zapomnimo, da smo videli 42? Uporabi novo spremenljivko!

+
Zapomni si, da si našel 42!
''',
+           '''\
+
Uporabi novo spremenljivko!

 ''',
               '''\
-
Spremenljivko na začetku nastavimo na False, npr.:

+
Spremenljivko na začetku nastavimo na False:

 
 videl42 = False
 

diff --git a/python/problems/lists_and_for/contains_string/sl.py b/python/problems/lists_and_for/contains_string/sl.py
index 2f24458..d177463 100644
--- a/python/problems/lists_and_for/contains_string/sl.py
+++ b/python/problems/lists_and_for/contains_string/sl.py
@@ -18,10 +18,12 @@ xs = ['foo', 'bar', 'baz', 'Waldo', 'foobar']
 '''
 
 for_loop = ['''\
-
Čez elemente v seznamu se najlažje sprehodimo s for zanko.
+
Pregledati bo treba vse elemente v seznamu xs''',
+            '''\
+
Najlažje bo s for zanko.
 ''',
              '''\
-
Poskusi, kaj naredita naslednji dve vrstici:

+
Poskusii naslednji dve vrstici:

 
 for x in xs:
     print (x)
@@ -29,7 +31,7 @@ for x in xs:
              '''\
 
V zgornjem primeru z zanko for Pythonu naročimo naj se sprehodi čez seznam xs
 in na vsakem koraku trenutni element seznama shrani v spremenljivko x.
-Kaj naj Python naredi s to spremenljivko, mu naročimo v zamaknjenih vrsticah.
+Kaj naj Python naredi s to spremenljivko, je zapisano v zamaknjenih vrsticah.
 Tokrat vrednost le izpišemo.
''']
 
 if_clause = ['''\
@@ -39,6 +41,7 @@ if_clause = ['''\
 if x == 'Waldo':
 
''']
 
+
 plan = ['''\
 
Plan je enak kot pri prvi nalogi:
 
diff --git a/python/problems/lists_and_for/counting/common.py b/python/problems/lists_and_for/counting/common.py
new file mode 100644
index 0000000..2d59182
--- /dev/null
+++ b/python/problems/lists_and_for/counting/common.py
@@ -0,0 +1,109 @@
+# coding=utf-8
+
+import re
+from python.util import has_token_sequence, string_almost_equal, \
+    string_contains_number, get_tokens, get_numbers, get_exception_desc
+from server.hints import Hint
+
+id = 203
+group = 'lists_and_for'
+number = 3
+visible = True
+
+solution = '''\
+xs = [42, 5, 4, -7, 2, 12, -3, -4, 11, 42, 2]
+
+stevec = 0
+for x in xs:
+    if x == 42:
+        stevec += 1
+print("Število 42 se v seznamu pojavi", stevec, "krat.")
+'''
+
+hint_type = {
+    'no_xs': Hint('no_xs'),
+    'for_loop': Hint('for_loop'),
+    'if_clause': Hint('if_clause'),
+    'printing': Hint('printing'),
+    'print_out_for': Hint('print_out_for'),
+    'final_hint': Hint('final_hint')
+}
+
+def test(python, code):
+    test_xs = [[42, 5, 4, -7, 2, 42, -3, -4, 11, 42, 2],
+               [42, 5, 4, -7, 2, 12, 42, -4, 11, 2],
+               [5, 4, -7, 2, 12, -3, -4, 11, 2],
+               [],
+               [42],
+               [42, 42],
+               [1, 2, 3, -42],
+               [1, 2, 3, 42, -42]]
+    test_out = [
+        3,
+        2,
+        0,
+        0,
+        1,
+        2,
+        0,
+        1
+    ]
+
+    n_correct = 0
+    tin = None
+    for xs_i, xs in enumerate(test_xs):
+        # change code to contain new xs instead of the one
+        # given by user
+        tcode = re.sub(r'^xs\s*=\s*\[.*?\]',
+                       'xs = ' + str(xs),
+                       code,
+                       flags = re.DOTALL | re.MULTILINE)
+
+        # use python session to call tcode
+        answers = python(code=tcode, inputs=[(None, None)], timeout=1.0)
+        output = answers[0][1]
+
+        if str(test_out[xs_i]) in output:
+            n_correct += 1
+        else:
+            tin = test_xs[xs_i]
+            tout = test_out[xs_i]
+
+    passed = n_correct == len(test_xs)
+    hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_xs)}}]
+    if tin:
+        hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin), 'testout': str(tout)}})
+    if passed:
+        hints.append({'id': 'final_hint'})
+    return passed, hints
+
+def hint(python, code):
+    # run one test first to see if there are any exceptions
+    answer = python(code=code, inputs=[(None, None)], timeout=1.0)
+    exc = get_exception_desc(answer[0][3])
+    if exc: return exc
+
+    tokens = get_tokens(code)
+
+    # if has no xs, tell him to ask for values
+    if not has_token_sequence(tokens, ['xs', '=', '[']):
+        return [{'id' : 'no_xs'}]
+
+    # student does not have while or for: instruct him on loops
+    if not has_token_sequence(tokens, ['while']) and \
+       not has_token_sequence(tokens, ['for']):
+        return [{'id' : 'for_loop'}]
+
+    if not has_token_sequence(tokens, ['if']):
+        return [{'id' : 'if_clause'}]
+
+    # student is not using print function
+    if not has_token_sequence(tokens, ['print']):
+        return [{'id' : 'printing'}]
+
+    # student is not using print at the beginning of line
+    if not has_token_sequence(tokens, ['\n', 'print']):
+        return [{'id' : 'print_out_for'}]
+
+
+    return None
diff --git a/python/problems/lists_and_for/counting/en.py b/python/problems/lists_and_for/counting/en.py
new file mode 100644
index 0000000..805b37c
--- /dev/null
+++ b/python/problems/lists_and_for/counting/en.py
@@ -0,0 +1,16 @@
+# coding=utf-8
+
+id = 193
+name = 'Contains 42'
+slug = 'Contains 42'
+
+description = '''\
+
(translation missing)
'''
+
+hint = {
+    'plan': '''\
+
(translation missing)
''',
+
+    'no_input_call': '''\
+
(translation missing)
''',
+}
diff --git a/python/problems/lists_and_for/counting/sl.py b/python/problems/lists_and_for/counting/sl.py
new file mode 100644
index 0000000..67dc323
--- /dev/null
+++ b/python/problems/lists_and_for/counting/sl.py
@@ -0,0 +1,90 @@
+# coding=utf-8
+import server
+mod = server.problems.load_language('python', 'sl')
+
+
+id = 203
+name = 'Štej'
+slug = 'Štej'
+
+
+description = '''\
+
Napiši program, ki v podanem seznamu prešteje število ponovitev števila 42. 
+Seznam xs definiraj na vrhu programa, kot v prejšnjih nalogah,
+izpis pa naj bo takšen: "Število 42 se v seznamu pojavi 2 krat."'''
+
+for_loop = ['''\
+
Pregledati bo treba vse elemente v seznamu xs''',
+            '''\
+
Najlažje s for zanko.
+''',
+             '''\
+
Poskusi naslednji dve vrstici:

+
+for x in xs:
+    print (x)
+
''',
+             '''\
+
V zgornjem primeru z zanko for Pythonu naročimo naj se sprehodi čez seznam xs
+in na vsakem koraku trenutni element seznama shrani v spremenljivko x.
+Kaj naj Python naredi s to spremenljivko, je zapisano v zamaknjenih vrsticah.
+V danem primeru vrednost le izpišemo.
''']
+
+if_clause = ['''\
+
Preveri, ali imamo število 42?
''',
+         '''\
+
Uporabi pogojni stavek if!
''',
+         '''\
+
+if x == 42:
+
''']
+
+count_42 = ['''\
+
Zapomni si, da si našel 42! Povečaj števec!
''',
+            '''\
+
Števec na začetku nastavimo na 0

+
+stevec = 0
+

+
in ga tekom zanke ustrezno spreminjamo.''']
+
+plan = ['''\
+
Plan: Preglej vse elemente v seznamu in vsakič, ko srečaš 42, povečaj 
+števec za 1.

+''',
+        '''\
+
Bolj podroben plan: 

+
+Za vsak element v seznamu
+    Poglej, ali je 42?
+        Če je, povečaj števec.
+Izpiši števec.
+

+
Zdaj pa je potrebno le še slovenščino prevesti v Python.

+''',
+        for_loop,
+        if_clause,
+        count_42]
+
+hint = {
+    'no_xs': ['''\
+
Program mora imeti na začetku definiran seznam xs.
'''],
+
+    'for_loop': for_loop,
+
+    'if_clause': if_clause,
+
+    'printing': ['''\
+
Izpiši rezultat.
'''],
+
+    'print_out_for': ['''\
+
Pazi, da izpišeš rezultat izven zanke!
'''],
+
+    'final_hint:': ['''\
+ 
Nalogo lahko rešiš bistveno hitreje, če poznaš metodo count

+ 
+ xs = [42, 5, 4, -7, 2, 12, -3, -4, 11, 42, 2]
+ print('Število 42 se v seznamu pojavi', xs.count(42), 'krat.')
+
''']
+
+}
diff --git a/python/problems/while_and_if/consumers_anonymous/common.py b/python/problems/while_and_if/consumers_anonymous/common.py
index ff3f928..07a0ebf 100644
--- a/python/problems/while_and_if/consumers_anonymous/common.py
+++ b/python/problems/while_and_if/consumers_anonymous/common.py
@@ -32,6 +32,7 @@ hint_type = {
     'final_hint': Hint('final_hint'),
     'summation': Hint('summation'),
     'counting': Hint('counting'),
+    'counting_with_0': Hint('counting_with_0'),
     'problematic_test_case': Hint('problematic_test_case'),
 }
 
@@ -53,7 +54,8 @@ def test(python, code):
         (105, 3),
         (10, 10),
         (10, 10),
-        (9, 9)
+        (9, 9),
+        (0, 0)
     ]
 
     # List of outputs: (expression result, stdout, stderr, exception).
@@ -114,14 +116,18 @@ def hint(python, code):
 
     # student's answer is not correct (three possibilities)
     if not string_almost_equal(answer[0][1], 15) or \
-       not string_almost_equal(answer[0][2], 105) or \
-       not string_almost_equal(answer[0][3], 20):
+       not string_almost_equal(answer[1][1], 105) or \
+       not string_almost_equal(answer[2][1], 20):
         return [{'id' : 'summation'}]
 
-    # student's answer is not correct (three possibilities)
-    if not string_almost_equal(answer[0][1], 2) or \
-       not string_almost_equal(answer[0][2], 3) or \
-       not string_almost_equal(answer[0][3], 10):
+    # student's counting of items, when last price iz zero is incorrect
+    if not string_almost_equal(answer[0][1], 2) and \
+       string_almost_equal(answer[0][1], 3):
+        return [{'id' : 'counting_with_0'}]
+
+    # counting in general is incorrect
+    if not string_almost_equal(answer[1][1], 3) or \
+       not string_almost_equal(answer[2][1], 10):
         return [{'id' : 'counting'}]
 
     return None
diff --git a/python/problems/while_and_if/consumers_anonymous/sl.py b/python/problems/while_and_if/consumers_anonymous/sl.py
index ee2700c..284abbc 100644
--- a/python/problems/while_and_if/consumers_anonymous/sl.py
+++ b/python/problems/while_and_if/consumers_anonymous/sl.py
@@ -96,6 +96,9 @@ hint = {
 
     'counting': ['''
Napaka pri štetju stvari.
'''],
 
+    'counting_with_0': ['''
Napaka pri štetju, kadar je zadnja cena 0.
''',
+                        '''
Števec povečaj, le če je cena > 0
'''],
+
     'name_error' : [mod.general_msg['error_head'],
                     mod.general_msg['general_exception'],
                     mod.general_msg['name_error'],
@@ -107,9 +110,10 @@ hint = {
 Pravilna vsota [%=sum%], pravilno število stvari: [%=count%]'''],
 
     'final_hint': ['''\
-
Odlično!Naloga rešena.

-Še zanimivost: v while zanki smo negirali ustavitveni pogoj tako, da smo negirali posamezne pogoje in
-spremenili pogoj or v and. Temu pravimo De Morganov zakon.
+
Odlično! Naloga rešena.

+Še zanimivost: v while zanki smo dobili ustavitveni pogoj tako, da smo negirali pogoj iz teksta (ali vnesemo 0 ali je
+vnešenih deset števil ali ko vsota cen doseže ali preseže 100 evrov). Pri tem smo ali (or) spremenili v in (and):
+cena > 0 and stevec < 10 and vsota < 100. Temu pravimo De Morganov zakon.
 '''],
 
     'eof_error':[mod.general_msg['eof_error'],
-- 
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