ImportError: No module named 'Cython'

问题

I'm trying do from Cython.Build import cythonize and I get the message ImportError: No module named 'Cython', but I instaled the Cython with the comand pip install Cython. What's wrong?

Python 3.5 Cython 0.25.2 Windows 8

回答1:

just directly install from pypi: pip install Cython
https://pypi.org/project/Cython/

回答2:

Use Pip3 command:

pip3 install --upgrade cython

回答3:

I reinstalled the Cython with conda and install the Microsoft Visual C++ Build Tools and it works fine.

回答4:

You can download the the newest Cython release from http://cython.org/ or you can directly download by clicking this link here Unpack the tarball or zip file, enter the directory, and then run:

python setup.py install

回答5:

it should be path problem. go to windows search for python idle right click idle - open file location where right click on python.exe - open file location if the module not in that location type cmd and press enter in path now install module with pip install cython it will work fine

来源：https://stackoverflow.com/questions/43982543/importerror-no-module-named-cython