Need your help

[Ervin Hegedüs]

hello,

> Here I need some help.
> 
> #encoding="utf-8"
> #moudle a.py
> def a():
>     print " function a!"
> 
> #encoding="utf-8"
> #moudle b.py
> def b():
>     print " function b!"
> 
> 
> #encoding="utf-8"
> #moudle c.py
> import a
> import b
> def c():
>     a.a()
> b.b()
> 
> 
> Here in function c,How can i record all the information printed by a and b with out modifying moudle a and b?
> I want to output all the printed information into a text file.
> 
> Need your help, thanks a lot!

sounds you want something like this:

#!/usr/bin/python

import a
import b

import sys
import StringIO

output = StringIO.StringIO()

def c():
    # save default stdout
    tout = sys.stdout
    # redirect stdout to StringIO object
    sys.stdout = output
    # a.a() prints their output to StringIO object
    a.a()
    # back up default stdout
    sys.stdout = tout
    # print StringIO object value
    print "retval:", output.getvalue()

c()



a.