I am not sure what version of cython it was using, I just installed python 3.10 from source. I installed version 0.29.24 using pip and recompiled Fiona but I still had the same problem.

Cannot import requests on python 3.10. The problem is that python 3.10 requires urllib3 >= 1.26. Expected Result I expected the module to import without errors. Actual Result Import failed due to u ...