utils.py 文件源码

def slugify(value, allow_unicode=False):
    """Slugify string to make it a valid filename.

    Convert to ASCII if 'allow_unicode' is False. Convert spaces to hyphens.
    Remove characters that aren't alphanumerics, underscores, or hyphens.
    Also strip leading and trailing whitespace.
    """
    import unicodedata
    value = str(value)
    if allow_unicode:
        value = unicodedata.normalize('NFKC', value)
    else:
        value = unicodedata.normalize('NFKD', value).encode(
            'ascii', 'ignore').decode('ascii')
    value = re.sub(r'[^\w\s-]', '', value).strip()
    return re.sub(r'[-\s]+', '-', value)


# Below from
# http://stackoverflow.com/questions/2333872/atomic-writing-to-file-with-python