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try:
from itertools import zip_longest
except ImportError:
from itertools import izip_longest as zip_longest
def _get_incorrect_user_lines(exp_lines, user_lines):
err_line_numbers = []
for line_no, (expected_line, user_line) in \
enumerate(zip_longest(exp_lines, user_lines)):
if not user_line or not expected_line or \
user_line.strip() != expected_line.strip():
err_line_numbers.append(line_no)
return err_line_numbers
def compare_outputs(expected_output, user_output, given_input=None):
given_lines = user_output.splitlines()
exp_lines = expected_output.splitlines()
msg = {"given_input":given_input,
"expected_output": exp_lines,
"user_output":given_lines
}
ng = len(given_lines)
ne = len(exp_lines)
err_line_numbers = _get_incorrect_user_lines(exp_lines, given_lines)
msg["error_line_numbers"] = err_line_numbers
if ng != ne:
msg["error_msg"] = ("Incorrect Answer: "
+ "We had expected {} number of lines. ".format(ne)
+ "We got {} number of lines.".format(ng)
)
return False, msg
else:
if err_line_numbers:
msg["error_msg"] = ("Incorrect Answer: "
+ "Line number(s) {0} did not match."
.format(", ".join(map(
str,[x+1 for x in err_line_numbers]
))))
return False, msg
else:
msg["error_msg"] = "Correct Answer"
return True, msg
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