File: httpobj.py

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"""Helper functions for scrapy.http objects (Request, Response)"""

import weakref

from urlparse import urlparse

_urlparse_cache = weakref.WeakKeyDictionary()
def urlparse_cached(request_or_response):
    """Return urlparse.urlparse caching the result, where the argument can be a
    Request or Response object
    """
    if request_or_response not in _urlparse_cache:
        _urlparse_cache[request_or_response] = urlparse(request_or_response.url)
    return _urlparse_cache[request_or_response]