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XML C14N serialisation fails with default namespace #86066

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scoder opened this issue Oct 1, 2020 · 4 comments
Closed

XML C14N serialisation fails with default namespace #86066

scoder opened this issue Oct 1, 2020 · 4 comments
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3.8 only security fixes 3.9 only security fixes 3.10 only security fixes topic-XML type-bug An unexpected behavior, bug, or error

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scoder commented Oct 1, 2020

BPO 41900
Nosy @scoder, @miss-islington
PRs
  • bpo-41900: C14N 2.0 serialisation failed for unprefixed attributes when a default namespace was defined. #22474
  • [3.9] bpo-41900: C14N 2.0 serialisation failed for unprefixed attributes when a default namespace was defined. (GH-22474) #22507
  • [3.8] bpo-41900: C14N 2.0 serialisation failed for unprefixed attributes when a default namespace was defined. (GH-22474) #22508
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
closed_at = <Date 2020-10-03.06:44:34.583>
created_at = <Date 2020-10-01.08:09:31.705>
labels = ['expert-XML', 'type-bug', '3.8', '3.9', '3.10']
title = 'XML C14N serialisation fails with default namespace'
updated_at = <Date 2020-10-03.06:44:34.583>
user = 'https://github.com/scoder'

    bugs.python.org fields:

    activity = <Date 2020-10-03.06:44:34.583>
actor = 'scoder'
assignee = 'none'
closed = True
closed_date = <Date 2020-10-03.06:44:34.583>
closer = 'scoder'
components = ['XML']
creation = <Date 2020-10-01.08:09:31.705>
creator = 'scoder'
dependencies = []
files = []
hgrepos = []
issue_num = 41900
keywords = ['patch']
message_count = 4.0
messages = ['377743', '377855', '377856', '377857']
nosy_count = 2.0
nosy_names = ['scoder', 'miss-islington']
pr_nums = ['22474', '22507', '22508']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue41900'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']
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    scoder commented Oct 1, 2020 

    import xml.etree.ElementTree as ET
xml="""
<X xmlns="http://soap.sforce.com/2006/04/metadata">
    <Y targets="lightning__AppPage,lightning__HomePage"></Y>
</X>"""
print(ET.canonicalize(xml))

    Fails with:
    ValueError: Namespace "" is not declared in scope
    when trying to build the QName of the unnamespaced "targets" attribute.

    Originally reported for lxml here:
    https://bugs.launchpad.net/lxml/+bug/1869455

    @scoder scoder added 3.8 only security fixes 3.9 only security fixes 3.10 only security fixes topic-XML type-bug An unexpected behavior, bug, or error labels Oct 1, 2020
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    scoder commented Oct 3, 2020

    New changeset 6a412c9 by scoder in branch 'master':
    bpo-41900: C14N 2.0 serialisation failed for unprefixed attributes when a default namespace was defined. (GH-22474)
    6a412c9

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    scoder commented Oct 3, 2020

    New changeset a0f2b66 by Miss Skeleton (bot) in branch '3.9':
    bpo-41900: C14N 2.0 serialisation failed for unprefixed attributes when a default namespace was defined. (GH-22474) (GH-22507)
    a0f2b66

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    scoder commented Oct 3, 2020

    New changeset cfed534 by Miss Skeleton (bot) in branch '3.8':
    bpo-41900: C14N 2.0 serialisation failed for unprefixed attributes when a default namespace was defined. (GH-22474) (GH-22508)
    cfed534

    @scoder scoder closed this as completed Oct 3, 2020
    @scoder scoder closed this as completed Oct 3, 2020
    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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