Python command line 'file input stream'

Question

I'm fairly new to python coming from C/C++, I was wondering how I would get my 'main.py' to reconize/use the imput given from a bash shell as:

python main.py < text.txt

(the file is in plain text)

Answer 1

Read from sys.stdin:

import sys
sys.stdin.read()

Being a file-like object, you can use its reading functions or simply iterate over the input lines:

for line in sys.stdin:
    print line