Hi Philip, Philip Guo wrote: > Sorry for another newbish question, but I'm having trouble getting PyPy > translated into C code. I added some calls to open() throughout the > interpreter codebase (to log some info to files), but it failed > translation with the following error: > > [translation:ERROR] Exception: unexpected prebuilt constant: > <built-in function open> > > I then tried doing 'import os' and then using os.fdopen, but with the > same error: > > [translation:ERROR] Exception: unexpected prebuilt constant: > <built-in function fdopen>
as you have noticed, neither os.open nor os.fdopen are supported by RPython. The only low-level supported way to deal with files is using os.open/os.read/os.write. However, you might want to have a look to rlib.streamio, that provides a higher level API to deal with files, offering features such as buffering, CR/LF conversions etc. In particular, you can use streamio.open_file_as_stream to get a file like object similar to the builtin python ones. > In general, what Python standard library calls can I make from my > modified PyPy code and still have it translate properly? Specifically, > how do I read/write files from within PyPy? see above :-) ciao, Anto _______________________________________________ pypy-dev@codespeak.net http://codespeak.net/mailman/listinfo/pypy-dev