[Tutor] Running python from windows command prompt

[Arijit Ukil]

I like to run a python program "my_python.py" from windows command prompt. 
This program ( a function called testing) takes input as block data (say 
data = [1,2,3,4] and outputs processed single data. 

import math 

def avrg(data): 
    return sum(data)/len(data) 

def testing (data): 
    val = avrg(data) 
    out = pow(val,2) 
    return out 

I am using python 2.6. My intention is to run from windows command prompt 
as

python my_python.py 1 3  2

However I am getting error: No such file in the directory, Errno 21

Pls help.

Regards,
Arijit Ukil
Tata Consultancy Services
Mailto: arijit.ukil at tcs.com
Website: http://www.tcs.com
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