Source code: Lib/ctypes ctypes is a foreign function library for Python. It provides C compatible data types, and allows calling functions in DLLs or shared libraries.

The ctypes module provides C compatible data types and allows calling functions in DLLs/shared libraries. Use it to wrap native libraries, define C structs, and interoperate with system APIs without writing extension modules.

ctypes uses the native byte order for Structures and Unions. To build structures with non-native byte order, you can use one of the BigEndianStructure, LittleEndianStructure, BigEndianUnion, and LittleEndianUnion base classes.

ctypes is a Python package to create and manipulate C data types in Python, and to call functions in dynamic link libraries/shared dlls. It allows wrapping these libraries in pure Python.

The Python ctypes module provides C-compatible data types and allows calling functions exported from shared libraries or DLLs, enabling Python code to interface with C libraries without writing a C extension.

ctypes reference ctypes is a foreign function library for Python. It provides C compatible data types, and allows to call functions in dlls/shared libraries. It can be used to wrap these libraries in pure Python.

ctypes is Python’s built-in foreign function interface (FFI) library that allows calling functions in shared libraries (.so on Linux, .dylib on macOS, .dll on Windows) without writing any C code or compiling extensions.

ctypes is a powerful tool in the Python ecosystem that allows developers to bridge the gap between Python's high-level programming and the performance and low-level capabilities of C.

Imitating the C macro with Python ctypes is possible but tedious: you begin by fetching the _pack_ of the self.__class__ and the ctypes.sizeof for each of the _fields_.

ctypes have the benefit that there is no C-code to compile, so it's very nice to use for wrapping standard libraries written by someone else, and already exists in binary versions for Windows and OS X.