django/core/cache/utils.py

import hashlib
from urllib.parse import quote

from django.utils.encoding import force_bytes

TEMPLATE_FRAGMENT_KEY_TEMPLATE = 'template.cache.%s.%s'


def make_template_fragment_key(fragment_name, vary_on=None):
    if vary_on is None:
        vary_on = ()
    key = ':'.join(quote(str(var)) for var in vary_on)
    args = hashlib.md5(force_bytes(key))
    return TEMPLATE_FRAGMENT_KEY_TEMPLATE % (fragment_name, args.hexdigest())
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