blob: 003337dc0bf0c799e9b40982847c0c4fdb6a00a9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
#!/usr/bin/env python
import sys
import traceback
import os
from os.path import join
import importlib
from contextlib import contextmanager
from ast import literal_eval
# local imports
from code_evaluator import CodeEvaluator
from StringIO import StringIO
@contextmanager
def redirect_stdout():
new_target = StringIO()
old_target, sys.stdout = sys.stdout, new_target # replace sys.stdout
try:
yield new_target # run some code with the replaced stdout
finally:
sys.stdout = old_target # restore to the previous value
class PythonStdioEvaluator(CodeEvaluator):
"""Tests the Python code obtained from Code Server"""
def compile_code(self, user_answer, expected_input, expected_output):
submitted = compile(user_answer, '<string>', mode='exec')
if expected_input:
input_buffer = StringIO()
input_buffer.write(expected_input)
input_buffer.seek(0)
sys.stdin = input_buffer
with redirect_stdout() as output_buffer:
exec_scope = {}
exec submitted in exec_scope
self.output_value = output_buffer.getvalue().rstrip("\n")
return self.output_value
def check_code(self, user_answer, expected_input, expected_output):
success = False
tb = None
if expected_output in user_answer:
success = False
err = ("Incorrect Answer: Please avoid "
"printing the expected output directly"
)
elif self.output_value == expected_output:
success = True
err = "Correct Answer"
else:
success = False
err = """Incorrect Answer:\nExpected output - {0}
and your output - {1}"""\
.format(expected_output, self.output_value)
del tb
return success, err
|
