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from __future__ import unicode_literals
# Local imports
from .base_evaluator import BaseEvaluator
class StdIOEvaluator(BaseEvaluator):
def evaluate_stdio(self, user_answer, proc, expected_input, expected_output):
success = False
ip = expected_input.replace(",", " ")
encoded_input = '{0}\n'.format(ip).encode('utf-8')
user_output_bytes, output_err_bytes = proc.communicate(encoded_input)
user_output = user_output_bytes.decode('utf-8')
output_err = output_err_bytes.decode('utf-8')
expected_output = expected_output.replace("\r", "")
if not expected_input:
error_msg = "Expected Output is {0} ".\
format(repr(expected_output))
else:
error_msg = " Given Input is\n {0} \n Expected Output is {1} ".\
format(expected_input, repr(expected_output))
if output_err == '':
if user_output == expected_output:
success, err = True, "Correct answer"
else:
err = " Incorrect answer\n" + error_msg +\
"\n Your output is {0}".format(repr(user_output))
else:
err = "Error:\n {0}".format(output_err)
return success, err
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