On Dec 17, 6:42 pm, "Gabriel Genellina" <gagsl-...@yahoo.com.ar> wrote: > En Wed, 17 Dec 2008 21:35:04 -0200, Floris Bruynooghe > <floris.bruynoo...@gmail.com> escribió: > Yes; but you don't have to dig into the implementation; from > http://docs.python.org/c-api/arg.html: > > s (string or Unicode object) [const char *] > Convert a Python string or Unicode object to a C pointer to a character > string. You must not provide storage for the string itself; a pointer to > an existing string is stored into the character pointer variable whose > address you pass. > > > But how can python now know how long to keep that buffer object in > > memory for? > > It doesn't - *you* have to ensure that the original string object isn't > destroyed (by example, incrementing its reference count as long as you > keep the pointer), or copy the string contents into your own buffer.
I missed something. How did you get a reference to the original string object, with which to increment its reference count? How do you know its length to copy it into your own buffer? -- http://mail.python.org/mailman/listinfo/python-list
