Re: [Bug #115845] sre: maxsplit as keyword argument
http://sourceforge.net/bugs/?func=detailbug&bug_id=115845&group_id=5470
Details: Split gives TypeError when called as a method of compiled regular expression object with maxsplit as keyword argument. This error is only in sre, pre is OK.
Python 1.6 (#2, Sep 6 2000, 18:20:07) [C] on osf1V4
import re patt = re.compile(' ') list = patt.split("a b c",50) # OK list = re.split(' ',"a b c",maxsplit=50) # OK list = patt.split("a b c",maxsplit=50) # ERROR Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: this function takes no keyword arguments
import pre patt = pre.compile(' ') list = patt.split("a b c",maxsplit=50) # OK
is this really a bug? should users expect to be able to use keyword arguments anywhere? </F>
Can we at PythonLabs help by adding keyword arguments to all of the _sre.c functions? I presume it's a pretty straightforward change.
if anyone can post (or point me to) an example showing how to use the keyword API, I can take if from there. </F>
Fredrik Lundh writes:
if anyone can post (or point me to) an example showing how to use the keyword API, I can take if from there.
This is documented in the Extending & Embedding manual. The parser module (Modules/parsermodule.c) uses this. -Fred -- Fred L. Drake, Jr. <fdrake at beopen.com> BeOpen PythonLabs Team Member
http://sourceforge.net/bugs/?func=detailbug&bug_id=115845&group_id=5470
Details: Split gives TypeError when called as a method of compiled regular expression object with maxsplit as keyword argument. This error is only in sre, pre is OK.
Python 1.6 (#2, Sep 6 2000, 18:20:07) [C] on osf1V4
import re patt = re.compile(' ') list = patt.split("a b c",50) # OK list = re.split(' ',"a b c",maxsplit=50) # OK list = patt.split("a b c",maxsplit=50) # ERROR Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: this function takes no keyword arguments
import pre patt = pre.compile(' ') list = patt.split("a b c",maxsplit=50) # OK
is this really a bug? should users expect to be able to use keyword arguments anywhere?
Unclear, but the names were documented, and it worked before (when pattern objects were Python instances) -- so who knows how much code there's lying around that assumes this. Well, we know it's more than zero, because the bug report came from soemone who ran into this. :-) Can we at PythonLabs help by adding keyword arguments to all of the _sre.c functions? I presume it's a pretty straightforward change. --Guido van Rossum (home page: http://www.python.org/~guido/)
if anyone can post (or point me to) an example showing how to use the keyword API, I can take if from there.
Grep the Modules directory for PyArg_ParseTupleAndKeywords. It's used in the mmap, parser, pyexpat and sha modules. --Guido van Rossum (home page: http://www.python.org/~guido/)
participants (3)
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Fred L. Drake, Jr. -
Fredrik Lundh -
Guido van Rossum