def __repr__(self):
        return "<Requirement(package={package}, version='{version}')>".format(
            package=self.package, version=self.version)
def _resetExpect(self):
        self.previousExpectLine = ""
        if self._connection is not None and isinstance(self._connection.buffer, str):
            self.previousExpectLine = self._connection.buffer 
            self._connection.buffer = ""