[Ilugc] raw_input and stderr redirection in python

[Noorul Islam K M]

Shrinivasan T <tshrinivasan at gmail.com> writes:

> Friends.
>
> It seems there are some issues with python raw_input and redirecting
> stderr in bash
>
> Here is the code:
>
> File: test.py
>
> print "Test Program"
> name=raw_input("Enter Your name: ")
> print name
>
> Execution:
> <snip>
>
> $python test.py
> Test Program
> Enter Your name: shrini
> shrini
>
>
> $python test.py 2> error
> Test Program
>

Did you see the content of the error file. It looks like raw_input() is
sending the prompt string to stderr. But still it waits for the user
input.

So may be one of the solutions could be

import sys
print "Test Program"
sys.stdout.write('Enter Your name: ')
name = raw_input()
print name

Thanks and Regards
Noorul

>
> </snip>
>
> When use redirections while calling python program, the raw_input is
> not working.
>
> There is some interesting dicsussion here:
> http://bytes.com/topic/python/answers/27498-raw_input-why-doesnt-prompt-go-stderr
>
> Is there any way to use both raw_input and error redirection?