Need your help

[Thomas Rachel]

Am 28.04.2011 13:14, schrieb Chris Rebert:

> import a, b, sys
> def c():
>      orig_stdout = sys.stdout
>      sys.stdout = open('my_log_file.log', 'w')
>      a.a()
>      b.b()
>      sys.stdout.close()
>      sys.stdout = orig_stdout
>
>
> Someone may have written a with-statement context manager that
> abstracts away the swapping.

@contextlib.contextmanager
def swap_stdout(target):
     orig_stdout = sys.stdout
     sys.stdout = target
     try:
         yield target
     finally:
         sys.stdout = orig_stdout

In this case, I can use all kinds of files (open() files, StringIO 
objects etc.), and can re-use them if necessary, in order to 
prepend/append data.

Closing can happen additionally, if the user wants.


Thomas