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Bug 1719145 - python-suds fails to build with Python 3.8 (dictionary keys changed during iteration)
Summary: python-suds fails to build with Python 3.8 (dictionary keys changed during it...
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: python-suds
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ---
Assignee: Scott Talbert
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: PYTHON38
TreeView+ depends on / blocked
 
Reported: 2019-06-11 07:23 UTC by Miro Hrončok
Modified: 2019-06-11 23:12 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-11 23:12:11 UTC
Type: Bug
Embargoed:

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Description Miro Hrončok 2019-06-11 07:23:25 UTC 
python-suds fails to build with Python 3.8.0b1:



=================================== FAILURES ===================================
_ TestRequest.test_string_representation_with_message[-headers1-for a bitch it's haaaard...] _

self = <test_transport.TestRequest object at 0x7f01a168a670>, url = ''
headers = {b'aaa': b'uf-uf'}, message = "for a bitch it's haaaard..."

        @pytest.mark.parametrize(("url", "headers", "message"), (
            ("my URL", {}, ""),
            ("", {"aaa": "uf-uf"}, "for a bitch it's haaaard..."),
            ("http://rumple-fif/muka-laka-hiki", {"uno": "eins", "zwei": "due"},
                """\
    I'm here to kick ass,
    and chew bubble gum...
    and I'm all out of gum."""),
            ("", {}, u("\u0161u\u0107-mu\u0107 pa o\u017Ee\u017Ei.. za 100 "
                "\u20AC\n\nwith multiple\nlines...")),
            ("", {}, "\n\n\n\n\n\n"),
            ("", {}, u("\u4E2D\u539F\u5343\u519B\u9010\u848B"))))
        def test_string_representation_with_message(self, url, headers, message):
>           for key, value in headers.items():
E           RuntimeError: dictionary keys changed during iteration

tests/test_transport.py:143: RuntimeError
_ TestRequest.test_string_representation_with_message[http://rumple-fif/muka-laka-hiki-headers2-I'm here to kick ass,\nand chew bubble gum...\nand I'm all out of gum.] _

self = <test_transport.TestRequest object at 0x7f01a1764c10>
url = 'http://rumple-fif/muka-laka-hiki'
headers = {b'uno': b'eins', b'zwei': b'due'}
message = "I'm here to kick ass,\nand chew bubble gum...\nand I'm all out of gum."

        @pytest.mark.parametrize(("url", "headers", "message"), (
            ("my URL", {}, ""),
            ("", {"aaa": "uf-uf"}, "for a bitch it's haaaard..."),
            ("http://rumple-fif/muka-laka-hiki", {"uno": "eins", "zwei": "due"},
                """\
    I'm here to kick ass,
    and chew bubble gum...
    and I'm all out of gum."""),
            ("", {}, u("\u0161u\u0107-mu\u0107 pa o\u017Ee\u017Ei.. za 100 "
                "\u20AC\n\nwith multiple\nlines...")),
            ("", {}, "\n\n\n\n\n\n"),
            ("", {}, u("\u4E2D\u539F\u5343\u519B\u9010\u848B"))))
        def test_string_representation_with_message(self, url, headers, message):
>           for key, value in headers.items():
E           RuntimeError: dictionary keys changed during iteration

tests/test_transport.py:143: RuntimeError



This is a new thing in 3.8, see https://github.com/python/cpython/pull/12596

A fix is usually to iterate over a copy (unless the code does some magical hacks).

Logs: https://copr-be.cloud.fedoraproject.org/results/@python/python3.8/fedora-rawhide-x86_64/00934040-python-suds/
Comment 1 Miro Hrončok 2019-06-11 07:29:48 UTC 
Something like:

--- a/tests/test_transport.py   Mon Jul 27 11:08:20 2015 +0200
+++ b/tests/test_transport.py   Tue Jun 11 09:29:31 2019 +0200
@@ -140,7 +140,7 @@
         ("", {}, "\n\n\n\n\n\n"),
         ("", {}, u("\u4E2D\u539F\u5343\u519B\u9010\u848B"))))
     def test_string_representation_with_message(self, url, headers, message):
-        for key, value in headers.items():
+        for key, value in list(headers.items()):
             old_key = key
             if isinstance(key, text_type):
                 key = key.encode("utf-8")
Comment 2 Scott Talbert 2019-06-11 13:04:44 UTC 
Dangit, I forgot to test 3.8.  Thanks.
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