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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _check_pypi_version(self):
 """ When the version is out of date or we have trouble retrieving it print a error to stderr and pause. """

        try:
            check_version()
        except VersionException as err:
            print(str(err), file=sys.stderr)
            time.sleep(TWO_SECONDS)