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/counting/common.py | 109 +++++++++++++++++++++++ python/problems/lists_and_for/counting/en.py | 16 ++++ python/problems/lists_and_for/counting/sl.py | 90 +++++++++++++++++++ 3 files changed, 215 insertions(+) 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/lists_and_for/counting') 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.')
+
'''] + +} -- cgit v1.2.1