Karthikeyan Singaravelan <[email protected]> added the comment:
The reported behavior is reproducible in master as well as of ea68d83933 but
not on 3.6.0. I couldn't bisect to the exact commit between 3.7.0 and 3.6.0
where this change was introduced though. I can also see some deprecation
warnings as below while running the script :
➜ cpython git:(master) ./python.exe ../backups/bpo34034.py
../backups/bpo34034.py:4: DeprecationWarning: invalid escape sequence \[
sym = ['\[','\]','\(','\)']
../backups/bpo34034.py:4: DeprecationWarning: invalid escape sequence \]
sym = ['\[','\]','\(','\)']
../backups/bpo34034.py:4: DeprecationWarning: invalid escape sequence \(
sym = ['\[','\]','\(','\)']
../backups/bpo34034.py:4: DeprecationWarning: invalid escape sequence \)
sym = ['\[','\]','\(','\)']
../backups/bpo34034.py:15: DeprecationWarning: invalid escape sequence \(
result=re.match("DBMS_NAME python4: string\(\d+\) .*?", "DBMS_NAME python4:
string(8) \"DB2/NT64\" ")
DBMS_NAME: string(%d) %s
DBMS_NAME: string(%d) %s
DBMS_NAME: string\(%d) %s
DBMS_NAME: string\(%d\) %s
DBMS_NAME: string\(%d\) .*?
Traceback (most recent call last):
File "/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/sre_parse.py",
line 1045, in parse_template
this = chr(ESCAPES[this][1])
KeyError: '\\d'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "../backups/bpo34034.py", line 11, in <module>
pattern = re.sub('%d', '\\d+', pattern)
File "/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/re.py", line
192, in sub
return _compile(pattern, flags).sub(repl, string, count)
File "/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/re.py", line
309, in _subx
template = _compile_repl(template, pattern)
File "/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/re.py", line
300, in _compile_repl
return sre_parse.parse_template(repl, pattern)
File "/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/sre_parse.py",
line 1048, in parse_template
raise s.error('bad escape %s' % this, len(this))
re.error: bad escape \d at position 0
Thanks
----------
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Python tracker <[email protected]>
<https://bugs.python.org/issue34304>
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