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import re
_tag_check = re.compile("^\w+[\w-]*$", re.UNICODE)
def is_valid_tag(tagname):
"""Return True if the tag meets our tag requirements."""
return _tag_check.match(tagname)
def is_valid_tag_list(tag_list):
"""Validate a tag_list string.
@param tag_list: string like london, server which will be split on the
commas and each tag verified for validity.
"""
if tag_list:
tags = [tag.strip() for tag in tag_list.split(",")]
for tag in tags:
if not is_valid_tag(tag):
return False
return True
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