PyCharm 2018.1 Help

Cython Support


PyCharm provides initial Cython support out-of-the-box. PyCharm recognizes *.pyx, *.pxd, and *.pxi files, and allows you to edit them.

However, if you want to compile and run *.pyx files, make sure that the following prerequisites are met:

  • Cython is downloaded and installed on your computer.
  • C compiler is downloaded and installed on your computer.

Cython support

Cython files are marked with icon cython icon.

Cython support includes:

  1. Coding assistance:
  2. Code inspections. Almost all Python code inspections work for Cython.
  3. Refactorings.
  4. Advanced facilities to search through the source code, in particular, finding usages.
  5. Compiling Cython modules:
    • Compilation is done using external tools. The preferred build systems (Makefile,, etc.) should be configured as external tools.
    • C compiler should be downloaded and installed on your computer.
  6. Cython debugger. Refer to Cython documentation for details.
Last modified: 23 July 2018

See Also

External Links: