From eb93adb4a8b71ddf2272c6c13f645784497add9f Mon Sep 17 00:00:00 2001 From: Martin Date: Mon, 21 Sep 2015 15:54:27 +0200 Subject: Added problem "Competition" Revised problem "Buy five" --- python/problems/while_and_if/competition/common.py | 84 ++++++++++++++++++++ python/problems/while_and_if/competition/en.py | 16 ++++ python/problems/while_and_if/competition/sl.py | 90 ++++++++++++++++++++++ 3 files changed, 190 insertions(+) create mode 100644 python/problems/while_and_if/competition/common.py create mode 100644 python/problems/while_and_if/competition/en.py create mode 100644 python/problems/while_and_if/competition/sl.py (limited to 'python/problems/while_and_if/competition') diff --git a/python/problems/while_and_if/competition/common.py b/python/problems/while_and_if/competition/common.py new file mode 100644 index 0000000..79f7447 --- /dev/null +++ b/python/problems/while_and_if/competition/common.py @@ -0,0 +1,84 @@ +# coding=utf-8 + +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, HintSequence + +id = 192 +group = 'while_and_if' +number = 2 +visible = True + +solution = '''\ +vsota = 0 +i = int(input('Število izdelkov: ')) +while i > 0: + vsota += int(input('Cena artikla: ')) + i -= 1 +print('Vsota:', vsota) +''' + +hint_type = { + 'plan': HintSequence('plan', 1), +} + +def test(python, code): + # List of inputs: (expression to eval, stdin). + test_in = [ + (None, '3\n2\n4\n1\n'), + (None, '3\n1\n1\n1\n'), + (None, '4\n2\n0\n3\n-1\n'), + (None, '7\n1\n2\n5\n4\n3\n11\n7\n'), + (None, '5\n0\n0\n0\n0\n0\n'), + ] + + test_out = [ + 7, + 3, + 4, + 33, + 0, + ] + + # List of outputs: (expression result, stdout, stderr, exception). + answers = python(code=code, inputs=test_in, timeout=1.0) + outputs = [ans[1] for ans in answers] + + n_correct = 0 + for output, correct in zip(outputs, test_out): + if string_almost_equal(output, correct): + n_correct += 1 + return n_correct, len(test_in) + +def hint(python, code): + # run one test first to see if there are any exceptions + test_in = [(None, '5\n1\n1\n1\n1\n1\n')] + answer = python(code=code, inputs=test_in, timeout=1.0) + exc = get_exception_desc(answer) + if exc: return exc + + tokens = get_tokens(code) + + # if has not input, tell him to ask for values + if not has_token_sequence(tokens, ['input']): + return [{'id' : 'read_before_while'}] + + # 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' : 'while_clause'}] + + # student is not using print function + if not has_token_sequence(tokens, ['print']): + return [{'id' : 'printing'}] + + # student does not know how to accumulate values (print contains 0 or 1) + if string_contains_number(answer[0][1], 0) or \ + string_contains_number(answer[0][1], 1): + return [{'id' : 'summation'}] + + # student does not print any values + if not get_numbers(answer[0][1]): + return [{'id' : 'nonumber'}] + + return None diff --git a/python/problems/while_and_if/competition/en.py b/python/problems/while_and_if/competition/en.py new file mode 100644 index 0000000..b09ee17 --- /dev/null +++ b/python/problems/while_and_if/competition/en.py @@ -0,0 +1,16 @@ +# coding=utf-8 + +id = 185 +name = '(translation missing)' +slug = '(translation missing)' + +description = '''\ +

(translation missing)

''' + +hint = { + 'plan': '''\ +

(translation missing)

''', + + 'no_input_call': '''\ +

(translation missing)

''', +} diff --git a/python/problems/while_and_if/competition/sl.py b/python/problems/while_and_if/competition/sl.py new file mode 100644 index 0000000..8d01ad4 --- /dev/null +++ b/python/problems/while_and_if/competition/sl.py @@ -0,0 +1,90 @@ +# coding=utf-8 +import server +mod = server.problems.load_language('python', 'sl') + + +id = 192 +name = 'Blagajna "konkurenca"' +slug = 'Blagajna "konkurenca"' + + +description = '''\ +

Konkurenčna trgovina za vogalom se je odločila za posebno ponudbo: kupec lahko kupi toliko +izdelkov, kolikor želi. Popravi gornji program tako, da blagajnika najprej vpraša, koliko izdelkov je v +košarici, nato vpraša po cenah teh izdelkov in na koncu spet izpiše vsoto.

+

+Število izdelkov: 3
+Cena artikla: 2
+Cena artikla: 4
+Cena artikla: 1
+Vsota: 7
+
+''' +main_plan = ['''\ +

Plan bo enak kot pri prejšnji nalogi, +le število ponavljanj se spremeni.

''', + '''\ +
+1. Preberi število produktov N.
+2. Ponavljaj N-krat:
+    3. Preberi ceno.
+    4. Prištej vsoti.
+5. Izpiši vsoto.
+
'''] +plan = [main_plan] + + +while_clause = ['''\ +

Kako bi prebral 5 cen z uporabo zanke while?

''', + '''\ +

Zanka while ima naslednjo sintakso:

+
+while Pogoj:
+    stavek 1
+    stavek 2
+    ...
+stavek n # stavek izven while.
+
''', + '''\ +

Stavki znotraj while (ki so zamaknjeni) se izvajajo toliko časa, dokler velja Pogoj v glavi stavka while. +Ko pogoj ne velja več, Python preskoči vrstice, ki so del while-a in nadaljuje s stavki, ki sledijo – v +našem primeru s stavkom n.

''' + ] + +summation = ['''\ +

Računanje vsote bo najlažje sproti v zanki.

''', + +'''\ +

Izmisli si spremenljivko, ki bo predstavljala vsoto, jo na +začetku (pred zanko) nastavi na 0 in ji v vsakem koraku prištej trenutno ceno. +Podobno kot števec.

''' +] + + +hint = { + 'while_clause': while_clause, + + 'read_before_while': ['''\ +

Najprej je potrebno vprašati, koliko izdelkov bo kupil.

'''], + + 'summation': summation, + + 'printing': ['''\ +

Izpiši vsoto

''', + '''\ +

V Pythonu izpisujemo s funkcijo print

.''', +'''

Pazi, da stavek s print ne bo zamaknjen, saj bo v takem +primeru del while-a in se bo večkrat izpisal.

'''], + + 'nonumber': ['''

Izpiši vsoto

'''], + + 'name_error' : [mod.general_msg['error_head'], + mod.general_msg['general_exception'], + mod.general_msg['name_error'], + '''\ +

Verjetno uporabljaš spremenljivko, ki nima nastavljene vrednosti. Morda v pogoju?'''], + + 'eof_error':[mod.general_msg['eof_error'], + '''\ +

Verjetno se zanka izvede prevečkrat. Preveri pogoj!

'''] +} -- cgit v1.2.1