13     open_source = tokenize.open     # pylint: disable=E1101
     27	# from coverage.py:
     30	    # In Py 2.x, the builtins were in __builtin__
     33	    # In Py 3.x, they're in builtins
     38	    """The same as s.rsplit(sep, 1), but works in 2.3"""
    101	    # Create a module to serve as __main__
    140	        # Restore the old __main__
    143	        # Restore the old argv and path

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