New submission from Alix Lourme <>:

Currently, the Request 
send header keys in Camel case.

This is a choice strategy (no problem with that) and even if headers should be 
considered insensitively (RFC 7230 - 3.2. Header Fields:, this is not always the case.

The fact that header keys are "rewritten" (in Camel case) could occurs 
complexity in troubleshooting (for sample:

Having a note/mention about that in documentation would be nice.

PR will come.

assignee: docs@python
components: Documentation
messages: 387736
nosy: axel3rd, docs@python
priority: normal
severity: normal
status: open
title: [Doc][urllib.request] Explicit the fact that header keys are sent in 
Camel case
type: behavior
versions: Python 3.10

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