Duncan Booth schrieb:
Lucas P Melo lukepada...@gmail.com wrote:
Hello, I'm a total noob about the C API. Is there any way to create a
generator function using the C API? I couldn't find anything like the
'yield' keyword in it.
Thanks in advance.
You define a new type with tp_flags including Py_TPFLAGS_HAVE_ITER.
Anything that would be a local variable in your generator needs to become
an attribute in the type.
The tp_init initialization function should contain all the code up to the
first yield, tp_iter should return self and tp_iternext should execute code
up to the next yield.
This is pretty easy to do in Cython (or Pyrex), BTW. Just write a class
with an __iter__ and __next__ method, and Cython will generate the C-API
code as expected.
http://docs.cython.org/docs/special_methods.html#iterators
Note that Cython doesn't currently support the yield statement, but
that's certainly on the ToDo list.
http://trac.cython.org/cython_trac/ticket/83
Stefan
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