pip._vendor.cachecontrol.heuristics.LastModified Class Reference

Inheritance diagram for pip._vendor.cachecontrol.heuristics.LastModified:

Collaboration diagram for pip._vendor.cachecontrol.heuristics.LastModified:

Public Member Functions
dict[str, str]	update_headers (self, HTTPResponse resp)
str|None	warning (self, HTTPResponse resp)
Public Member Functions inherited from pip._vendor.cachecontrol.heuristics.BaseHeuristic
HTTPResponse	apply (self, HTTPResponse response)

Static Public Attributes
dict	cacheable_by_default_statuses

Detailed Description

If there is no Expires header already, fall back on Last-Modified
using the heuristic from
http://tools.ietf.org/html/rfc7234#section-4.2.2
to calculate a reasonable value.

Firefox also does something like this per
https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ
http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397
Unlike mozilla we limit this to 24-hr.

Member Function Documentation

update_headers()

dict[str, str] pip._vendor.cachecontrol.heuristics.LastModified.update_headers	(		self,
		HTTPResponse	response
	)

Update the response headers with any new headers.

NOTE: This SHOULD always include some Warning header to
      signify that the response was cached by the client, not
      by way of the provided headers.

Reimplemented from pip._vendor.cachecontrol.heuristics.BaseHeuristic.

warning()

str | None pip._vendor.cachecontrol.heuristics.LastModified.warning	(		self,
		HTTPResponse	response
	)

Return a valid 1xx warning header value describing the cache
adjustments.

The response is provided too allow warnings like 113
http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need
to explicitly say response is over 24 hours old.

Reimplemented from pip._vendor.cachecontrol.heuristics.BaseHeuristic.

Member Data Documentation

cacheable_by_default_statuses

dict pip._vendor.cachecontrol.heuristics.LastModified.cacheable_by_default_statuses

static

Initial value:

=  {
        200,
        203,
        204,
        206,
        300,
        301,
        404,
        405,
        410,
        414,
        501,
    }

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The documentation for this class was generated from the following file:

• docs/help/help-venv/lib/python3.12/site-packages/pip/_vendor/cachecontrol/heuristics.py