def _get_version(ctx, _, value):
if not value or ctx.resilient_parsing:<EOL><INDENT>return<EOL><DEDENT>message = '<STR_LIT>'<EOL>click.echo(message % {<EOL>'<STR_LIT:version>': version,<EOL>'<STR_LIT>': sys.version,<EOL>}, color=ctx.color)<EOL>ctx.exit()<EOL>
Click callback for option to show current ZSL version.