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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 _get_name_and_version(name, version, for_filename=False):
 """Return the distribution name with version. If for_filename is true, return a filename-escaped form."""

    if for_filename:
        # For both name and version any runs of non-alphanumeric or '.'
        # characters are replaced with a single '-'.  Additionally any
        # spaces in the version string become '.'
        name = _FILESAFE.sub('-', name)
        version = _FILESAFE.sub('-', version.replace(' ', '.'))
    return '%s-%s' % (name, version)