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Bug 1693029 - tornado FTBFS with Python 3.8: SyntaxError: invalid escape sequence
Summary: tornado FTBFS with Python 3.8: SyntaxError: invalid escape sequence
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: python-tornado
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ---
Assignee: Miro Hrončok
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: PYTHON38
TreeView+ depends on / blocked
 
Reported: 2019-03-27 00:35 UTC by Miro Hrončok
Modified: 2019-04-03 12:15 UTC (History)
5 users (show)

Fixed In Version: python-tornado-5.1.1-1.fc31
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-04-03 12:15:32 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Miro Hrončok 2019-03-27 00:35:53 UTC 
Description of problem:
Invalid escape sequences are now SyntaxWarning in python 3.8:

$ python3.8
>>> '\d'
<stdin>:1: SyntaxWarning: invalid escape sequence \d
'\\d'

The test suite of tornado turns this into a SyntaxError:

+ /usr/bin/python3 -m tornado.test.runtests --verbose
/builddir/build/BUILD/tornado-5.0.2/tornado/util.py:255: SyntaxWarning: invalid escape sequence \d
...
SyntaxError: invalid escape sequence \.


Version-Release number: 5.0.2-5.fc31
Comment 1 Miro Hrončok 2019-03-27 00:36:49 UTC 
The bytecompilation gives idea where the problem is:

+ /usr/lib/rpm/brp-python-bytecompile /usr/bin/python 1 0
Bytecompiling .py files below /builddir/build/BUILDROOT/python-tornado-5.0.2-5.fc31.x86_64/usr/lib/debug/usr/lib64/python3.8 using /usr/bin/python3.8
Bytecompiling .py files below /builddir/build/BUILDROOT/python-tornado-5.0.2-5.fc31.x86_64/usr/lib/debug/usr/lib64/python2.7 using /usr/bin/python2.7
Bytecompiling .py files below /builddir/build/BUILDROOT/python-tornado-5.0.2-5.fc31.x86_64/usr/lib64/python2.7 using /usr/bin/python2.7
Bytecompiling .py files below /builddir/build/BUILDROOT/python-tornado-5.0.2-5.fc31.x86_64/usr/lib64/python3.8 using /usr/bin/python3.8
/usr/lib64/python3.8/web_test.py:365: SyntaxWarning: invalid escape sequence \?
/usr/lib64/python3.8/util.py:255: SyntaxWarning: invalid escape sequence \d
/usr/lib64/python3.8/web.py:1834: SyntaxWarning: invalid escape sequence \.
/usr/lib64/python3.8/web_test.py:365: SyntaxWarning: invalid escape sequence \?
/usr/lib64/python3.8/util.py:255: SyntaxWarning: invalid escape sequence \d
/usr/lib64/python3.8/web.py:1834: SyntaxWarning: invalid escape sequence \.
Comment 2 Miro Hrončok 2019-03-27 00:54:51 UTC 
The fix is part of this upstream commit: https://github.com/tornadoweb/tornado/commit/6dceb64ed27c1d48af22142f2ebae946f0e85e95
Comment 3 Miro Hrončok 2019-03-27 09:43:51 UTC 
Ok, that is not the only failure:

======================================================================
FAIL: test_inline_read_error (tornado.test.iostream_test.TestIOStreamSSL)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tornado/testing.py", line 124, in __call__
    result = self.orig_method(*args, **kwargs)
  File "tornado/test/iostream_test.py", line 931, in test_inline_read_error
    server.read_bytes(1, lambda data: None)
AssertionError: error not raised

======================================================================
FAIL: test_inline_read_error (tornado.test.iostream_test.TestIOStreamSSLContext)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tornado/testing.py", line 124, in __call__
    result = self.orig_method(*args, **kwargs)
  File "tornado/test/iostream_test.py", line 931, in test_inline_read_error
    server.read_bytes(1, lambda data: None)
AssertionError: error not raised

----------------------------------------------------------------------
Ran 1493 tests in 18.546s
Comment 4 Miro Hrončok 2019-03-27 09:56:50 UTC 
https://src.fedoraproject.org/rpms/python-tornado/pull-request/4
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