Show python3 warnings for specific module when running a test suite with nose

test_py3_nose.py

# Run this as
# python -3 MODULE TESTFILE NOSETESTS_OPTIONS
# where:
#     MODULE: module that you want to check for python3 compatibility
#     TESTFILE: file with tests
#     NOSETESTS OPTIONS: other options that you would give to nosetests (e.g., -v, -x, --nocapture)

import sys
import warnings
import nose

if __name__ == '__main__':
    module= sys.argv[1]
    testfile= sys.argv[2]
    warnings.filterwarnings('ignore','',DeprecationWarning,'^((?!%s).)*$' % module)
    # Following line turns the warnings into errors
    warnings.filterwarnings('error','',DeprecationWarning,module)
    argv= ['blahblah',testfile] #nose.main ignores argv[0]
    argv.extend(sys.argv[3:])
    nose.main(argv=argv)