c++ - Python passing char * as an argument to a function -

i have created python module c++ static library using cython add-on. c++ library provides function listing contents of folder. provides name of directory contents displayed, output buffer contents of directory stored, , of course length of output buffer. c++ definition of function follows:

int listitems(char *dir, char *buf, int buflen) 

the python module in turn has function pylistitems calls function:

def pylistitems(char *dir, char *buf, int buflen):     return listitems(dir,buf,buflen)` 

in script using function, define string buffer , pointer of type c_char_p, , pass function in place of buf argument:

buf = c_types.create_string_buffer(100) pbuf = c_char_p(addressof(buf)) pylistitems('somefolder',pbuf,100) 

but getting following error:

typeerror: expected string or unicode object, c_char_p found

any appreciated.

pbuf = c_char_p(addressof(buf)) 

you don't need this. create_string_buffer returns character array. do:

buf = c_types.create_string_buffer(100) pylistitems('somefolder',buf,100)