How do you read from stdin in Python?

How do you read from stdin in Python?

https://stackoverflow.com/questions/1450393/how-do-you-read-from-stdin-in-python

Here's from Learning Python:

import sys
data = sys.stdin.readlines()
print "Counted", len(data), "lines."

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On Unix, you could test it by doing something like:

% cat countlines.py | python countlines.py 
Counted 3 lines.

On Windows or DOS, you'd do:

C:\> type countlines.py | python countlines.py 
Counted 3 lines.