Question

We will try to read input from the user. Press Ctrl-d and see what happens:

>>> s = raw_input('Enter something --> ')

Answer 1

In Python 2, pressing Ctrl-D sends an end-of-file signal. Since no input is supplied, raw_input() raises an EOFError exception. It can be handled as follows:

try:
    s = input("Enter something --> ")
except EOFError:
    print("End of input reached.")

In Windows, Ctrl-Z followed by Enter generally performs the equivalent EOF operation.