( python )

If you type Ctrl - C while the shell is executing the input() function, a KeyboardInterrupt exception will be raised. For example: >>> x = input() # Typing Ctrl-C Traceback (most recent call last): File "", line 1, in KeyboardInterrupt Create a wrapper function safe_input() which works just like function input() except that it returns None when an exception is raised. >>> x = safe_input() # Typing Ctrl-C >>> x # x is None >>> x = safe_input() # Typing 34 34 >>> x # x is 34 '34'