has many built-in function use python implementation.example:link
but,i can't find model 'sys' implementation.
how can i get it.
import sys
print help(sys)
+2
A:
The sys module is implemented in C: http://svn.python.org/view/python/trunk/Python/sysmodule.c?view=markup
There is no Python source for it, because it's entirely operating system interfaces that cannot be implemented in pure Python.
Andrew McGregor
2010-01-10 09:16:18
`sys` provides functions crucial to the interpreter, and is really more of a reflection of interpreter state, so it is actually compiled in when the interpreter is built, and the values are all guaranteed to change at runtime. Pypy would have to use their own implementation of sys.
LeafStorm
2010-01-10 13:36:57
A:
Abstraction can only be taken so far, Python strives to be a system/platform independent language and the sys module being what it is has to be platform specific and cannot be implemented in pure python.
whatnick
2010-01-10 10:26:25