Cython Support

Prerequisites

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 support includes:

1. Coding assistance:
   • Error and syntax highlighting.
   • Code completion for keywords, fields of structs, and attributes of extension types.
   • Code formatting and folding.
   • Ability to create line comments (Ctrl+/).
   • Cython syntax for typed memoryviews.
2. Code inspections. Almost all Python code inspections work for Cython.
3. Refactorings.
4. Numerous ways to navigate through the source code, among them:
   • Navigating with Structure View.
   • Navigate | Declaration (Ctrl+B).
   • Navigate | Implementation (Ctrl+Alt+B) from overridden method / subclassed class.
5. Advanced facilities to search through the source code, in particular, finding usages.
6. Compiling Cython modules:
   • Compilation is done using external tools. The preferred build systems (Makefile, setup.py, etc.) should be configured as external tools.
   • C compiler should be downloaded and installed on your computer.
7. Cython debugger. Refer to Cython documentation for details.