[New-bugs-announce] [issue25403] urllib.parse.urljoin is broken in python 3.5

[Pavel Ivanov]

New submission from Pavel Ivanov:

urllib.parse.urljoin does not conform the RFC 1808 in case of joining relative URL’s containing ‘..’ path components anymore.

Examples:

Python 3.4: 
>>> urllib.parse.urljoin('http://a.com', '..')
'http://a.com/..'
Python 3.5:
>>> urllib.parse.urljoin('http://a.com', '..')
'http://a.com/'

Python 3.4: 
>>> urllib.parse.urljoin('a/’, '..')
''
Python 3.5:
>>> urllib.parse.urljoin('a/', '..')
'/'

Python 3.4: 
>>> urllib.parse.urljoin('a/’, '../..')
'..'
Python 3.5:
>>> urllib.parse.urljoin('a/', '../..')
'/'

Python 3.4 conforms RFC 1808 in these scenarios, but Python 3.5 does not.

----------
components: Interpreter Core, Library (Lib)
messages: 252986
nosy: Pavel Ivanov
priority: normal
severity: normal
status: open
title: urllib.parse.urljoin is broken in python 3.5
type: behavior
versions: Python 3.5, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25403>
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