1. a foreign function library for Python
交大資工系103級
戴嘉駿/darkgerm
<darkgerm@gmail.com>

2. How can Python combine with
C?
 Python API
 Python built-in module - ctypes
 third party module (ex: boost.python, SWIG)

3. What is ctypes
 A foreign function library for Python.
 It provides C compatible data types.
 It allows calling functions in DLLs or shared
libraries.

4. ctypes History
 1

5. Reasons to use ctypes
 more portable between implementations
of Python.
 It has a much lower startup cost.
 It is in Python Standard Library.
 you're still writing Python!

6. Fundamenta data types

7. Structures and Unions

8. Example on stackoverflow

9. Example on stackoverflow

10. Example on stackoverflow

11. Example on stackoverflow

12. Example on stackoverflow

13. Example on stackoverflow

14. Example on stackoverflow

15. Modify the Example

16. Modify the Example

17. Modify the Example

18. Modify the Example

19. function prototypes

20. function prototypes

21. Who use ctypes?

22. Who use ctypes?

23. Who use ctypes?

24. Thank you for
listening!!
Ref:
 http://docs.python.org/library/ctypes.html
 http://stackoverflow.com/questions/145270/calling-c-c-from-python
 http://stackoverflow.com/questions/135834/python-swig-vs-ctypes
 http://stackoverflow.com/questions/1942298/wrapping-a-c-library-in-
python-c-cython-or-ctypes
 https://www.google.com/