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Reword proxies section and add warning

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Nate Prewitt
2022-02-18 18:18:23 -07:00
parent 95f4567336
commit 15fde024f2
1 changed files with 13 additions and 4 deletions
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docs/user/advanced.rst
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@@ -603,10 +603,19 @@ Alternatively you can configure it once for an entire
session.get('http://example.org')
When the proxies configuration is not overridden in python as shown above,
by default Requests relies on the proxy configuration defined by standard
environment variables ``http_proxy``, ``https_proxy``, ``no_proxy``,
``curl_ca_bundle``, and ``all_proxy``. Uppercase variants of these variables are also supported.
.. warning:: Setting ``session.proxies`` may behave differently than expected.
Values provided will be overwritten by environmental proxies
(those returned by `urllib.request.getproxies <https://docs.python.org/3/library/urllib.request.html#urllib.request.getproxies>`_).
To ensure the use of proxies in the presence of environmental proxies,
explicitly specify the ``proxies`` argument on all individual requests as
initially explained above.
See `#2018 <https://github.com/psf/requests/issues/2018>`_ for details.
When the proxies configuration is not overridden per request as shown above,
Requests relies on the proxy configuration defined by standard
environment variables ``http_proxy``, ``https_proxy``, ``no_proxy``,
and ``all_proxy``. Uppercase variants of these variables are also supported.
You can therefore set them to configure Requests (only set the ones relevant
to your needs)::