New submission from Abhilash Raj <raj.abhila...@gmail.com>:
When using `urllib.parse.urlencode` it is impossible to pass an empty list when
doseq=True.
So, I see the following behavior when using urlencode:
In [3]: urlencode({'key': ['value']}, doseq=True)
Out[3]: 'key=value'
In [4]: urlencode({'key': []}, doseq=True)
Out[4]: ''
So, in our source code, we do urlecode(params, doseq=True), which can have keys
with empty list as values and it gets dropped completely. To get it to work
properly, I instead pass around an empty string as a value when the length of
list is 0, which conveys the server that the value of the key is empty.
I wonder if it would make sense for urlencode to do that by default given
doseq=True is meant to encode lists properly.
----------
messages: 318153
nosy: maxking
priority: normal
severity: normal
status: open
title: urlib.parse.urlencode with empty list and doseq=True drops the parameter
type: behavior
versions: Python 3.6
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue33690>
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