I am trying to build a cython module that uses the bisect module. When compiling with python-2 the import works flawlessly, but when compiled for python-3 I get a strange recursion error. Here is an example test and setup script: ## test_module.pyx import bisect def primes(int kmax): cdef int n, k, i cdef int p[1000] result = [] if kmax > 1000: kmax = 1000 k = 0 n = 2 while k < kmax: i = 0 while i < k and n % p != 0: i = i + 1 if i == k: p[k] = n k = k + 1 result.append(n) n = n + 1 return result setup script ## setup.py from distutils.core import setup from distutils.extension import Extension from Cython.Build import cythonize import numpy as np extensions = [ Extension("test_module", ["test_module.pyx"]) ] setup( ext_modules=cythonize(extensions), include_dirs = [np.get_include()], ) build instructions $ python3 setup.py build_ext --inplace $ python3 >>> import test_module Traceback (most recent call last): File "<stdin>", line 1, in <module> File "test.pyx", line 1, in init sph2sed.test import bisect File "<frozen importlib._bootstrap>", line 971, in _find_and_load File "<frozen importlib._bootstrap>", line 951, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 894, in _find_spec File "<frozen importlib._bootstrap_external>", line 1157, in find_spec File "<frozen importlib._bootstrap_external>", line 1129, in _get_spec File "<frozen importlib._bootstrap_external>", line 1271, in find_spec File "<frozen importlib._bootstrap_external>", line 96, in _path_isfile File "<frozen importlib._bootstrap_external>", line 88, in _path_is_mode_type RecursionError: maximum recursion depth exceeded >>> exit() I have create a new python3 environment with conda, the list of installed packages is: $ conda list # packages in environment at /home/chris/anaconda/envs/sph2sed: # ca-certificates 2017.08.26 h1d4fec5_0 certifi 2017.11.5 py36hf29ccca_0 Cython 0.27.3 <pip> decorator 4.1.2 py36hd076ac8_0 intel-openmp 2018.0.0 hc7b2577_8 ipython 6.2.1 py36h88c514a_1 ipython_genutils 0.2.0 py36hb52b0d5_0 jedi 0.11.0 py36_2 libedit 3.1 heed3624_0 libffi 3.2.1 hd88cf55_4 libgcc-ng 7.2.0 h7cc24e2_2 libstdcxx-ng 7.2.0 h7a57d05_2 mkl 2018.0.1 h19d6760_4 ncurses 6.0 h9df7e31_2 numpy 1.13.3 py36ha12f23b_0 openssl 1.0.2n hb7f436b_0 parso 0.1.1 py36h35f843b_0 pexpect 4.3.0 py36h673ed17_0 pickleshare 0.7.4 py36h63277f8_0 pip 9.0.1 py36h6c6f9ce_4 prompt_toolkit 1.0.15 py36h17d85b1_0 ptyprocess 0.5.2 py36h69acd42_0 pygments 2.2.0 py36h0d3125c_0 python 3.6.3 h6c0c0dc_5 readline 7.0 ha6073c6_4 setuptools 36.5.0 py36he42e2e1_0 simplegeneric 0.8.1 py36h2cb9092_0 six 1.11.0 py36h372c433_1 sph2sed 0.1 <pip> sqlite 3.20.1 hb898158_2 tk 8.6.7 hc745277_3 traitlets 4.3.2 py36h674d592_0 UNKNOWN 0.0.0 <pip> wcwidth 0.1.7 py36hdf4376a_0 wheel 0.30.0 py36hfd4bba0_1 xz 5.2.3 h55aa19d_2 zlib 1.2.11 ha838bed_2 Continue reading...
