#!/usr/bin/env python

"""

Exceptions Lab solution:

The raw_input() function can generate two exceptions:

EOFError or KeyboardInterrupt on end-of-file(EOF) or canceled input.

Create a wrapper function, perhaps safe_input() that returns None rather

rather than raising these exceptions, when the user enters ^C for Keyboard

Interrupt, or ^D (^Z on Windows) for End Of File.

NOTE: if the user types a few charactors, and the hits ctrl+C, the

KeyboardInterrupt gets caught somewhere deeper in the process, and

this function doesn't work.

Don't worry about that -- I do'nt really understnd what's going on in

the REPL (Read, Evaluate, Print Loop) either -- and the point of this

assigment is simple Exception handling.

"""

def safe_input(prompt_string=""):

"""

print user for input -- returning a raw string.

This is just like the built-in raw_input(), but it will return None

if the user hits ctrl+c, ratehr than raise an Exception.

"""

try:

response = raw_input(prompt_string)

return response

except (EOFError, KeyboardInterrupt):

return None

if __name__ == "__main__":

response = safe_input("Say Something: ")

print "You said:", response