lxml.etree._Attrib doesn't inherit Mapping

Bug #1981760 reported by Pekka Klärck
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Fix Released

Bug Description

We have code that operates with various collections and when working with dictionaries it checks is the object a dictionary with `isinstance(obj, Mapping)`. That works fine in general, including with the standard ElementTree, but fails with `lxml.etree._Attrib`. To reproduce:

>>> from collections.abc import Mapping
>>> from xml.etree.ElementTree import XML
>>> isinstance(XML('<x/>').attrib, Mapping)
>>> from lxml.etree import XML
>>> isinstance(XML('<x/>').attrib, Mapping)

Required version info:

Python : sys.version_info(major=3, minor=8, micro=10, releaselevel='final', serial=0)
lxml.etree : (4, 9, 1, 0)
libxml used : (2, 9, 14)
libxml compiled : (2, 9, 14)
libxslt used : (1, 1, 35)
libxslt compiled : (1, 1, 35)

Revision history for this message
scoder (scoder) wrote :
Changed in lxml:
assignee: nobody → scoder (scoder)
importance: Undecided → Low
status: New → Fix Committed
milestone: none → 4.9.2
description: updated
scoder (scoder)
Changed in lxml:
status: Fix Committed → Fix Released
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