Re: FILE object in Python3.0 extension modules

2009-06-03 Thread Martin v. Löwis
> The purpose is to dump the contents of a Python extension type to disk > as binary data using C's fwrite() function. This isn't really possible anymore - the Python IO library has stopped using stdio. There are a couple of alternatives: 1. don't use fwrite(3) to write the binary data, but inste

Re: FILE object in Python3.0 extension modules

2009-05-29 Thread Gabriel Genellina
En Fri, 29 May 2009 23:24:32 -0300, Benjamin Peterson escribió: Gabriel Genellina yahoo.com.ar> writes: But you have to import the io module first, don't you? That's not usually necesary for most built in types -- e.g. PyFloat_Check just checks for a float object. Well, in 3.x, file is

Re: FILE object in Python3.0 extension modules

2009-05-29 Thread Benjamin Peterson
Gabriel Genellina yahoo.com.ar> writes: > But you have to import the io module first, don't you? That's not usually > necesary for most built in types -- e.g. PyFloat_Check just checks for a > float object. Well, in 3.x, file is not longer a builtin type. -- http://mail.python.org/mailma

Re: FILE object in Python3.0 extension modules

2009-05-29 Thread Gabriel Genellina
En Fri, 29 May 2009 08:48:26 -0300, Benjamin Peterson escribió: Joachim Dahl gmail.com> writes: How do I perform type checking for such an object in the extension module, and how do I extract a FILE * object from it? I browsed the C API documentation, but couldn't find an answer. You u

Re: FILE object in Python3.0 extension modules

2009-05-29 Thread Gabriel Genellina
En Fri, 29 May 2009 06:52:15 -0300, Joachim Dahl escribió: In Python2.x, I used PyFile_Check(obj) to check if a parameter was a file object. Now, in Python3.0 the same object (obtained as open('file.bin','wb')) is an io.BufferedWriter object. How do I perform type checking for such an objec

Re: FILE object in Python3.0 extension modules

2009-05-29 Thread Benjamin Peterson
Joachim Dahl gmail.com> writes: > > How do I perform type checking for such an object in the extension > module, > and how do I extract a FILE * object from it? I browsed the C API > documentation, but > couldn't find an answer. You use PyObject_IsInstance to test if the object is an instance

FILE object in Python3.0 extension modules

2009-05-29 Thread Joachim Dahl
In Python2.x, I used PyFile_Check(obj) to check if a parameter was a file object. Now, in Python3.0 the same object (obtained as open('file.bin','wb')) is an io.BufferedWriter object. How do I perform type checking for such an object in the extension module, and how do I extract a FILE * object f