How to read multiple lines of raw input?

I want to create a Python program which takes in multiple lines of user input. For example:

This is a multilined input.
It has multiple sentences.
Each sentence is on a newline.

How can I take in multiple lines of raw input?

sentinel = '' # ends when this string is seen
for line in iter(raw_input, sentinel):
    pass # do things here

To get every line as a string you can do:

'\n'.join(iter(raw_input, sentinel))

Python 3:

'\n'.join(iter(input, sentinel))

Alternatively, you can try sys.stdin.read() that returns the whole input until EOF:

import sys
s = sys.stdin.read()
print(s)

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