capybara/virtualenv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py
def _markerlib_evaluate(cls, text):
        """
        Evaluate a PEP 426 environment marker using markerlib.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.
        """
        from pip._vendor import _markerlib
        # markerlib implements Metadata 1.2 (PEP 345) environment markers.
        # Translate the variables to Metadata 2.0 (PEP 426).
        env = _markerlib.default_environment()
        for key in env.keys():
            new_key = key.replace('.', '_')
            env[new_key] = env.pop(key)
        try:
            result = _markerlib.interpret(text, env)
        except NameError as e:
            raise SyntaxError(e.args[0])
        return result
def _markerlib_evaluate(cls, text):
        """
        Evaluate a PEP 426 environment marker using markerlib.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.
        """
        from pip._vendor import _markerlib
        # markerlib implements Metadata 1.2 (PEP 345) environment markers.
        # Translate the variables to Metadata 2.0 (PEP 426).
        env = _markerlib.default_environment()
        for key in env.keys():
            new_key = key.replace('.', '_')
            env[new_key] = env.pop(key)
        try:
            result = _markerlib.interpret(text, env)
        except NameError as e:
            raise SyntaxError(e.args[0])
        return result
def _markerlib_evaluate ( cls , text ) : from pip . _vendor import _markerlib # markerlib implements Metadata 1.2 (PEP 345) environment markers. # Translate the variables to Metadata 2.0 (PEP 426). env = _markerlib . default_environment ( ) for key in env . keys ( ) : new_key = key . replace ( '.' , '_' ) env [ new_key ] = env . pop ( key ) try : result = _markerlib . interpret ( text , env ) except NameError as e : raise SyntaxError ( e . args [ 0 ] ) return result
Evaluate a PEP 426 environment marker using markerlib.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.
Evaluate a PEP 426 environment marker using markerlib . Return a boolean indicating the marker result in this environment . Raise SyntaxError if marker is invalid .