[Bug 2138264] [NEW] SyntaxWarning: invalid escape sequence
Seth Arnold
2138264 at bugs.launchpad.net
Mon Jan 12 20:31:40 UTC 2026
Public bug reported:
Hello, I spotted the following during an apt upgrade:
...
Setting up python3 (3.12.3-0ubuntu2.1) ...
running python rtupdate hooks for python3.12...
/usr/lib/x86_64-linux-gnu/gedit/plugins/externaltools/library.py:212: SyntaxWarning: invalid escape sequence '\-'
RE_KEY = re.compile('^([a-zA-Z_][a-zA-Z0-9_.\-]*)(\[([a-zA-Z_@]+)\])?$')
/usr/lib/x86_64-linux-gnu/gedit/plugins/snippets/substitutionparser.py:162: SyntaxWarning: invalid escape sequence '\s'
match = re.match('\\\\?%s\s*' % self.REG_GROUP, tokens)
/usr/share/hplip/base/imagesize.py:186: SyntaxWarning: invalid escape sequence '\#'
re.compile('\#define\s+\S+\s+\d+') : ('image/x-xbitmap', xbmsize),
/usr/share/hplip/base/imagesize.py:187: SyntaxWarning: invalid escape sequence '\/'
re.compile('\/\* XPM \*\/') : ('image/x-xpixmap', xpmsize),
/usr/share/hplip/base/imagesize.py:189: SyntaxWarning: invalid escape sequence '\*'
re.compile('^II\*\x00') : ('image/tiff', tiffsize),
/usr/share/hplip/fax/ledmfax.py:46: SyntaxWarning: invalid escape sequence '\d'
http_result_pat = re.compile(b"""HTTP/\d.\d\s(\d+)""", re.I)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/AstrawebParser.py:64: SyntaxWarning: invalid escape sequence '\/'
url = re.split('(\/display[^"]*)', entry)[1]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/AstrawebParser.py:66: SyntaxWarning: invalid escape sequence '\/'
title = re.split('(\/display[^>]*)([^<]*)', entry)[2][1:].strip()
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/AstrawebParser.py:97: SyntaxWarning: invalid escape sequence '\/'
lyrics = re.split('(<font face=arial size=2>)(.*)(<\/font><br></td><td*)', result)[2]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/JetlyricsParser.py:50: SyntaxWarning: invalid escape sequence '\.'
m = re.search('<a href=\'(http://jetlyrics\.com/viewlyrics\.php\?id=[0-9]*)\'>', result)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/JlyricParser.py:49: SyntaxWarning: invalid escape sequence '\.'
m = re.search('<div class=\'title\'><a href=\'(/artist/[^\.]*\.html)\'>', result)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/TerraParser.py:39: SyntaxWarning: invalid escape sequence '\w'
pattern = re.compile("&(#?\w+?);")
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/WinampcnParser.py:87: SyntaxWarning: invalid escape sequence '\['
lrcplaintext = re.sub('\[.*?\]', '', lrcplaintext)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
running python post-rtupdate hooks for python3.12...
...
** Affects: python3.12 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2138264
Title:
SyntaxWarning: invalid escape sequence
Status in python3.12 package in Ubuntu:
New
Bug description:
Hello, I spotted the following during an apt upgrade:
...
Setting up python3 (3.12.3-0ubuntu2.1) ...
running python rtupdate hooks for python3.12...
/usr/lib/x86_64-linux-gnu/gedit/plugins/externaltools/library.py:212: SyntaxWarning: invalid escape sequence '\-'
RE_KEY = re.compile('^([a-zA-Z_][a-zA-Z0-9_.\-]*)(\[([a-zA-Z_@]+)\])?$')
/usr/lib/x86_64-linux-gnu/gedit/plugins/snippets/substitutionparser.py:162: SyntaxWarning: invalid escape sequence '\s'
match = re.match('\\\\?%s\s*' % self.REG_GROUP, tokens)
/usr/share/hplip/base/imagesize.py:186: SyntaxWarning: invalid escape sequence '\#'
re.compile('\#define\s+\S+\s+\d+') : ('image/x-xbitmap', xbmsize),
/usr/share/hplip/base/imagesize.py:187: SyntaxWarning: invalid escape sequence '\/'
re.compile('\/\* XPM \*\/') : ('image/x-xpixmap', xpmsize),
/usr/share/hplip/base/imagesize.py:189: SyntaxWarning: invalid escape sequence '\*'
re.compile('^II\*\x00') : ('image/tiff', tiffsize),
/usr/share/hplip/fax/ledmfax.py:46: SyntaxWarning: invalid escape sequence '\d'
http_result_pat = re.compile(b"""HTTP/\d.\d\s(\d+)""", re.I)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/AstrawebParser.py:64: SyntaxWarning: invalid escape sequence '\/'
url = re.split('(\/display[^"]*)', entry)[1]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/AstrawebParser.py:66: SyntaxWarning: invalid escape sequence '\/'
title = re.split('(\/display[^>]*)([^<]*)', entry)[2][1:].strip()
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/AstrawebParser.py:97: SyntaxWarning: invalid escape sequence '\/'
lyrics = re.split('(<font face=arial size=2>)(.*)(<\/font><br></td><td*)', result)[2]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/JetlyricsParser.py:50: SyntaxWarning: invalid escape sequence '\.'
m = re.search('<a href=\'(http://jetlyrics\.com/viewlyrics\.php\?id=[0-9]*)\'>', result)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/JlyricParser.py:49: SyntaxWarning: invalid escape sequence '\.'
m = re.search('<div class=\'title\'><a href=\'(/artist/[^\.]*\.html)\'>', result)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/TerraParser.py:39: SyntaxWarning: invalid escape sequence '\w'
pattern = re.compile("&(#?\w+?);")
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/WinampcnParser.py:87: SyntaxWarning: invalid escape sequence '\['
lrcplaintext = re.sub('\[.*?\]', '', lrcplaintext)
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
/usr/lib/x86_64-linux-gnu/rhythmbox/plugins/lyrics/lyrics.py:44: SyntaxWarning: invalid escape sequence '\('
LYRIC_TITLE_STRIP=["\(live[^\)]*\)", "\(acoustic[^\)]*\)", "\([^\)]*mix\)", "\([^\)]*version\)", "\([^\)]*edit\)", "\(feat[^\)]*\)"]
running python post-rtupdate hooks for python3.12...
...
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