cython.parallel.threadid unavailable in function arguments

It looks like this is a valid cython code.

from cython import parallel
x = parallel.threadid()
print(x)

But this is not.

from cython import parallel
print(parallel.threadid())

This might be just a symptom of a larger issue. Many things are not possible with the cython module when compiled with cython, compared to when run with python. Like accessing its module object.

import cython
x = cython

[da-woods]

print(parallel.threadid()) looks like a bug.

---

Not being able to assign the cython module isn’t. The Cython module isn’t really a proper module, should really only be cimported (a compile-time action), and doesn’t have an actual module object associated with it. It can be imported so it’s possible to write pure-Python code with optional Cython features.

If you were able to assign the cython module then people would do things like:

import cython

if something():
     x = cython
else:
     class Dummy:
         def cclass(self, var):
             return var
    x = Dummy()

@x.cclass
class C:
    pass

Suddenly you’ve made the choice of whether C is a cdef or regular class a runtime decision rather than a compile-time decision…

[da-woods]

Thanks for the output. I’m quite puzzled by it though. When I compare the .c file from tests/run/parallel.pyx (i.e. the two tests that are failing) with and without my PR the only differences are due to the extra test I added. If I revert the extra test I added then diff tells me that they’re identical.

So I don’t know I’m afraid… I guess the PR should be treated with caution because of what you say but I really don’t understand where the differences could be coming from.