Cython implicitly brings all cimport objects in a pxd file into the namespace of the corresponding pyx file. For example:
# foo.pxd
from lib.stdint cimport uint8_t
# foo.pyx
cdef f(uint8_t x): # uint8_t is known because it's cimported in the pxd file
pass
However, this can lead to inconsistent cimports across a package where some types are not cimported in the file that they are used. It would be helpful if cython-lint could raise an error in such cases.
Since I could imagine that approach not being favored by everyone, it would also be acceptable to have a configuration option that allows cython-lint to do the exact opposite and disallow any duplicate cimports between pyx and pxd files. Although not my preference, there may be some users of cython-lint with a preference for that. My first choice would be for cython-lint to be a more opinionated linter (a la black) in this situation, but I think the configuration approach would be an acceptable resolution as well. The truly undesirable case is when some cimports are present in both files while others are not, making it impossible to know a priori where to look.
Cython implicitly brings all
cimportobjects in a pxd file into the namespace of the corresponding pyx file. For example:However, this can lead to inconsistent cimports across a package where some types are not cimported in the file that they are used. It would be helpful if cython-lint could raise an error in such cases.
Since I could imagine that approach not being favored by everyone, it would also be acceptable to have a configuration option that allows cython-lint to do the exact opposite and disallow any duplicate cimports between pyx and pxd files. Although not my preference, there may be some users of cython-lint with a preference for that. My first choice would be for cython-lint to be a more opinionated linter (a la black) in this situation, but I think the configuration approach would be an acceptable resolution as well. The truly undesirable case is when some cimports are present in both files while others are not, making it impossible to know a priori where to look.