id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
4158	SyntaxWarning: invalid escape sequence	hacklschorsch		"I see a lot of ""SyntaxWarning: invalid escape sequence"" warnings about us having things in strings that recent Python doesn't like.

For example, in the Debian 13 package CI runner, we find that *installing* the built package will emit lots of these warnings:

https://app.circleci.com/pipelines/github/LeastAuthority/tahoe-lafs/1303/workflows/0ee30e67-de10-4d03-8c93-6a51000393ad/jobs/15982/parallel-runs/0/steps/0-105

{{{
Selecting previously unselected package tahoe-lafs.
(Reading database ... 23602 files and directories currently installed.)
Preparing to unpack .../tahoe-lafs_1.20.0-1_all.deb ...
Unpacking tahoe-lafs (1.20.0-1) ...
Setting up tahoe-lafs (1.20.0-1) ...
/usr/lib/python3/dist-packages/allmydata/hashtree.py:73: SyntaxWarning: invalid escape sequence '\ '
  """"""
/usr/lib/python3/dist-packages/allmydata/hashtree.py:182: SyntaxWarning: invalid escape sequence '\ '
  """"""
/usr/lib/python3/dist-packages/allmydata/interfaces.py:409: SyntaxWarning: invalid escape sequence '\-'
  """"""This block of data contains integrity-checking information (hashes
/usr/lib/python3/dist-packages/allmydata/node.py:93: SyntaxWarning: invalid escape sequence '\.'
  ADDR_RE = re.compile(""^([1-9][0-9]*\.[1-9][0-9]*\.[1-9][0-9]*\.[1-9][0-9]*)(:([1-9][0-9]*))?$"")
/usr/lib/python3/dist-packages/allmydata/test/cli/test_backup.py:39: SyntaxWarning: invalid escape sequence '\d'
  ""(\d)+ files skipped, ""
/usr/lib/python3/dist-packages/allmydata/test/cli/test_backup.py:40: SyntaxWarning: invalid escape sequence '\d'
  ""(\d+) directories created \((\d+) reused\), ""
/usr/lib/python3/dist-packages/allmydata/test/cli/test_backup.py:41: SyntaxWarning: invalid escape sequence '\d'
  ""(\d+) directories skipped"", out)
/usr/lib/python3/dist-packages/allmydata/test/cli/test_cli.py:767: SyntaxWarning: invalid escape sequence '\('
  in_pending_msg_regex = ""ran out of shares: complete= pending=Share\(.+\) overdue= unused= need 3""
/usr/lib/python3/dist-packages/allmydata/test/test_runner.py:257: SyntaxWarning: invalid escape sequence '\S'
  self.failIf(re.search(""[\S][^\.!?]$"", line), (line,))
/usr/lib/python3/dist-packages/allmydata/test/web/test_web.py:1971: SyntaxWarning: invalid escape sequence '\s'
  CSS_STYLE=re.compile(b'toolbar\s{.+text-align:\scenter.+toolbar-item.+display:\sinline',re.DOTALL)
/usr/lib/python3/dist-packages/allmydata/util/i2p_provider.py:192: SyntaxWarning: invalid escape sequence '\:'
  escaped_sam_port = sam_port.replace(':', '\:')
/usr/lib/python3/dist-packages/allmydata/web/status.py:1559: SyntaxWarning: invalid escape sequence '\d'
  u""_(\d\d)_(\d)_percentile"",
/usr/lib/python3/dist-packages/allmydata/web/status.py:1560: SyntaxWarning: invalid escape sequence '\g'
  u'{quantile=""0.\g<1>\g<2>""}',
/usr/lib/python3/dist-packages/allmydata/hashtree.py:73: SyntaxWarning: invalid escape sequence '\ '
  """"""
/usr/lib/python3/dist-packages/allmydata/hashtree.py:182: SyntaxWarning: invalid escape sequence '\ '
  """"""
/usr/lib/python3/dist-packages/allmydata/interfaces.py:409: SyntaxWarning: invalid escape sequence '\-'
  """"""This block of data contains integrity-checking information (hashes
/usr/lib/python3/dist-packages/allmydata/node.py:93: SyntaxWarning: invalid escape sequence '\.'
  ADDR_RE = re.compile(""^([1-9][0-9]*\.[1-9][0-9]*\.[1-9][0-9]*\.[1-9][0-9]*)(:([1-9][0-9]*))?$"")
/usr/lib/python3/dist-packages/allmydata/test/cli/test_backup.py:39: SyntaxWarning: invalid escape sequence '\d'
  ""(\d)+ files skipped, ""
/usr/lib/python3/dist-packages/allmydata/test/cli/test_backup.py:40: SyntaxWarning: invalid escape sequence '\d'
  ""(\d+) directories created \((\d+) reused\), ""
/usr/lib/python3/dist-packages/allmydata/test/cli/test_backup.py:41: SyntaxWarning: invalid escape sequence '\d'
  ""(\d+) directories skipped"", out)
/usr/lib/python3/dist-packages/allmydata/test/cli/test_cli.py:767: SyntaxWarning: invalid escape sequence '\('
  in_pending_msg_regex = ""ran out of shares: complete= pending=Share\(.+\) overdue= unused= need 3""
/usr/lib/python3/dist-packages/allmydata/test/test_runner.py:257: SyntaxWarning: invalid escape sequence '\S'
  self.failIf(re.search(""[\S][^\.!?]$"", line), (line,))
/usr/lib/python3/dist-packages/allmydata/test/web/test_web.py:1971: SyntaxWarning: invalid escape sequence '\s'
  CSS_STYLE=re.compile(b'toolbar\s{.+text-align:\scenter.+toolbar-item.+display:\sinline',re.DOTALL)
/usr/lib/python3/dist-packages/allmydata/util/i2p_provider.py:192: SyntaxWarning: invalid escape sequence '\:'
  escaped_sam_port = sam_port.replace(':', '\:')
/usr/lib/python3/dist-packages/allmydata/web/status.py:1559: SyntaxWarning: invalid escape sequence '\d'
  u""_(\d\d)_(\d)_percentile"",
/usr/lib/python3/dist-packages/allmydata/web/status.py:1560: SyntaxWarning: invalid escape sequence '\g'
  u'{quantile=""0.\g<1>\g<2>""}',
}}}"	defect	closed	normal	undecided	unknown	n/a	fixed