c - Python ctypes: passing to function with 'const char ** ' argument -

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i want pass python list of strings c function expecting const char **. saw question , solution here not seem work me. following sample code:

arglist = ['abc','def'] options = (ctypes.c_char_p * len(arglist))() options[:] = arglist

gives following error:

traceback (most recent call last):   file "<interactive input>", line 1, in <module> typeerror: string or integer address expected instead of str instance

what doing wrong?

addendum:

there seems consensus, code should work. here how reproduce problem.

the following 4 lines typed in python command-line illustrate problem.

python 3.2 (r32:88445, feb 20 2011, 21:29:02) [msc v.1500 32 bit (intel)] on win 32 type "help", "copyright", "credits" or "license" more information. >>> ctypes import * >>> arglist = ['abc', 'def'] >>> options = (c_char_p * len(arglist))() >>> options[:] = arglist traceback (most recent call last):   file "<stdin>", line 1, in <module> typeerror: string or integer address expected instead of str instance >>>

the sample python code correct.

can paste whole code?

in case, guessing string contains embedded nul bytes, , throws typeerror exception.

hope link helps: http://docs.python.org/c-api/arg.html


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