From 4b0e419541244969e3177b7da6efc3149c2263aa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Matev=C5=BE=20Pober=C5=BEnik?= Date: Fri, 13 Oct 2017 12:42:22 +0200 Subject: Python: Add introduction group for FKKT students Python: Add anchor link to jump to FKKT exercices --- .../pythagorean_theorem_fkkt/common.py | 100 +++++++++++++++++++++ .../pythagorean_theorem_fkkt/sl.py | 93 +++++++++++++++++++ 2 files changed, 193 insertions(+) create mode 100644 python/problems/introduction-fkkt/pythagorean_theorem_fkkt/common.py create mode 100644 python/problems/introduction-fkkt/pythagorean_theorem_fkkt/sl.py (limited to 'python/problems/introduction-fkkt/pythagorean_theorem_fkkt') diff --git a/python/problems/introduction-fkkt/pythagorean_theorem_fkkt/common.py b/python/problems/introduction-fkkt/pythagorean_theorem_fkkt/common.py new file mode 100644 index 0000000..cb78487 --- /dev/null +++ b/python/problems/introduction-fkkt/pythagorean_theorem_fkkt/common.py @@ -0,0 +1,100 @@ +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 = 25002 +number = 3 +visible = True + +solution = '''\ +from math import * +a = float(input("Prva kateta: ")) +b = float(input("Druga kateta: ")) +c = sqrt(a ** 2 + b ** 2) +print("Hipotenuza trikotnika s stranicama", a, "in", b, "je", c) +''' + +hint_type = { + 'plan': Hint('plan'), + 'name_error': Hint('name_error'), + 'unsupported_operand': Hint('unsupported_operand'), + 'no_input_call' : Hint('no_input_call'), + 'printing': Hint('printing'), + 'math_functions': Hint('math_functions'), + 'final_hint': Hint('final_hint') +} + +def test(python, code, aux_code=''): + # List of inputs: (expression to eval, stdin). + test_in = [ + (None, '3\n4\n'), + (None, '4\n3\n'), + (None, '12\n5\n'), + (None, '5\n12\n'), + (None, '5\n0\n'), + (None, '0\n5\n'), + ] + + test_out = [ + "Hipotenuza = 5.0 cm", + "Hipotenuza = 5.0 cm", + "Hipotenuza = 13.0 cm", + "Hipotenuza = 13.0 cm", + "Hipotenuza = 5.0 cm", + "Hipotenuza = 5.0 cm", + ] + + # List of outputs: (expression result, stdout, stderr, exception). + answers = python(code=aux_code+code, inputs=test_in, timeout=1.0) + outputs = [ans[1] for ans in answers] + + n_correct = 0 + tin = None + for i, (output, correct) in enumerate(zip(outputs, test_out)): + if output.rstrip().endswith(correct): + #if string_almost_equal(output, float(correct), prec=2): + n_correct += 1 + else: + tin = test_in[i][1] + tout = correct + + passed = n_correct == len(test_in) + hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_in)}}] + 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, aux_code=''): + tokens = get_tokens(code) + + # run one test first to see if there are any exceptions + test_in = [(None, '3\n4\n')] + answer = python(code=aux_code+code, inputs=test_in, timeout=1.0) + exc = answer[0][3] + exc_hint = get_exception_desc(answer[0][3]) + if exc: + if 'NameError' in exc: + return [{'id':'name_error', 'args': {'message': exc}}] + elif 'unsupported operand' in exc or 'TypeError' in exc: + return [{'id':'unsupported_operand', 'args': {'message': exc}}] + else: + return exc_hint + + # if input is not present in code, student needs to learn about input + if not has_token_sequence(tokens, ['input']) or \ + (not has_token_sequence(tokens, ['float']) and not has_token_sequence(tokens, ['int'])) or \ + not has_token_sequence(tokens, ['=']): + return [{'id': 'no_input_call'}] + + # if tokens sqrt or ** are not in code, we have to teach them how to + # use math functions. + if not has_token_sequence(tokens, ['**']): + return [{'id' : 'math_functions'}] + + # student is not using print function + if not has_token_sequence(tokens, ['print']): + return [{'id' : 'printing'}] + + return None diff --git a/python/problems/introduction-fkkt/pythagorean_theorem_fkkt/sl.py b/python/problems/introduction-fkkt/pythagorean_theorem_fkkt/sl.py new file mode 100644 index 0000000..e94e87a --- /dev/null +++ b/python/problems/introduction-fkkt/pythagorean_theorem_fkkt/sl.py @@ -0,0 +1,93 @@ +import server +mod = server.problems.load_language('python', 'sl') + +name = 'Pitagorov izrek' +slug = 'Pitagorov izrek' + +description = '''\ +

Napiši program, ki uporabnika vpraša po dolžinah katet pravokotnega trikotnika in +izpiše dolžino hipotenuze.

+

Primer uporabe:

+
Prva kateta [cm]: 3
+Druga kateta [cm]: 4
+Hipotenuza = 5.0 cm
+''' + +no_input_call = ['''\ +

Tako kot pri prejšnji nalogi za branje uporabimo funkcijo input

''', + '''\ +

Preberemo dve vrednosti in jih shranimo v dve spremenljivki:

+
+ a = float(input("Prva kateta: "))
+ b = float(input("Druga kateta: "))
+
''', + '''\ +

Imeni a in b sta spremenljivki (angl. variable). +Spremenljivke uporabljamo, kadar želimo kakšno vrednost shraniti, ki jo bomo +potrebovali kasneje v programu. Imena spremenljivk so lahko poljubno + dolga, v našem primeru bi jim lahko rekli tudi kateta_a in kateta_b. + Pri programiranju velja, da izbiramo taka imena spremenljivk, + ki bodo naredila program berljiv.

+ ''' +] + +math_functions = ['''\ +

Dolžina hipotenuze je kvadratni koren vsote kvadratov katet.

''', + '''\ +
+c = (a**2 + b**2)**(1/2)
+
+

Dvojni znak za množenje ** je potenciranje. Potenca 1/2 pomeni koren. ''' +] + +printing = ['''\ +

V Pythonu izpisujemo s funkcijo print.

''', + '''\ +

Če želimo izpisati več elementov, +jih ločimo z vejico. Recimo, da imamo spremenljivko ime, +ki vsebuje naše ime, potem lahko napišemo:

+
+print("Ime mi je", ime, ".")
+
'''] + +plan = ['''\ +

Program razdelimo na tri dele:

+
    +
  1. Preberi vrednosti katet (a,b = ?)
    2. +
  2. Izračunaj dolžino hipotenuze c (c = …)
    3. +
  3. Izpis dolžine hipotenuze (print … )
    4. +
+''', + no_input_call, + math_functions, + printing] + +hint = { + 'no_input_call': no_input_call, + + 'math_functions': math_functions, + + 'printing': printing, + + 'name_error' : [mod.general_msg['error_head'], mod.general_msg['general_exception'], + mod.general_msg['name_error'], ''' +

Verjetno uporabljaš spremenljivko, ki nima vrednosti. Ali v izrazu za izračun + uporabljaš napačno spremenljivko? Ali pri izpisu morda poskušaš + izpisati napačno spremenljivko?

'''], + + 'unsupported_operand' : [mod.general_msg['error_head'], mod.general_msg['general_exception'], + mod.general_msg['type_error'], ''' +

Verjetni razlog: funkcija input vrača vrednost tipa niz, +ki jo moramo najprej pretvoriti v tip float, če želimo z njo računati:

+
+v = float(input(" ...
+
+'''], + + 'final_hint' : [ + '''\ +

Program deluje pravilno!
+To pomeni, da znaš prebrati števila in na njih uporabljati matematične operacije. +

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