PyTest and Nose comparison of results

# Run nose using : nosetests --verbosity=2 --with-ignore-docstrings
# Run pytest using : py.test -vvv

# Run the script using : python <scriptname> /path/to/pytest/log/file/from/travis /path/to/nose/log/file/from/travis
# Example of nose and pytest logs from travis:
# - Nose - https://travis-ci.org/AbdealiJK/pywikibot-core/builds/131404927
# - PyTest - https://travis-ci.org/AbdealiJK/pywikibot-core/builds/131373171

import re
import sys

assert len(sys.argv) == 3, 'PyTest log and Nose log required'
pylogfile, noselogfile = sys.argv[1:]

with open(pylogfile) as f:
    pylog = f.read()

with open(noselogfile) as f:
    noselog = f.read()

NOSE_RE = re.compile(r'(?P<funcname>test.*) \((?P<pkgname>.*)\) \.\.\.')
PYTEST_RE = re.compile(r'(?P<filename>tests/.*)\.py::(?P<clsname>.*)::(?P<funcname>[^ ]*) ')

pytests = []
for match in re.finditer(PYTEST_RE, pylog):
    match = match.groupdict()

    filename = match['filename']
    clsname = match['clsname']
    funcname = match['funcname']

    testname = filename + ":" + clsname + "." + funcname
    pytests.append(testname.strip())

nosetests = []
for match in re.finditer(NOSE_RE, noselog):
    match = match.groupdict()

    filename1, filename2, clsname = match['pkgname'].split('.')
    funcname = match['funcname']
    filename = filename1 + '/' + filename2

    testname = filename + ":" + clsname + "." + funcname
    nosetests.append(testname.strip())

from pprint import pprint
print('In pytest, but not in nose:',
      len(pytests), '-', len(nosetests),
      '=', len(set(pytests) - set(nosetests)))
pprint(set(pytests) - set(nosetests))
print('In nose, but not in pytest:',
      len(nosetests), '-', len(pytests),
      '=', len(set(nosetests) - set(pytests)))
pprint(set(nosetests) - set(pytests))

# pprint(pytests)
# print(len(pytests))