if mobj is not None:
upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
format_expressions = ['%d %B %Y', '%B %d %Y', '%b %d %Y']
if mobj is not None:
upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
format_expressions = ['%d %B %Y', '%B %d %Y', '%b %d %Y']