[docs] [issue9637] docs do not say that urllib uses HTTP_PROXY

Senthil Kumaran report at bugs.python.org
Mon Jan 9 19:38:40 CET 2012

Senthil Kumaran <senthil at uthcode.com> added the comment:

Sorry, this escaped for so long. First thing is, having different values for HTTP_PROXY and HTTP_proxy and http_proxy is plain wrong at the user side. They all should be same and in that case the possible problem which Kirikaza  and Neil Muller state is extremely unlikely (and if the user faces any issue, it is due to improper HTTP configuration).

The reason that lowering of environ vars is performed is similar to any string match with input from user where we want to ignore the case sensitivity.

Having said that, I think, I shall just add teh info on lowering and verification of proxy environment to the docs. I am -1 on changing any behavior for this issue.

assignee: docs at python -> orsenthil

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