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Python

Posted by John Hill
.a{fill-rule:evenodd;}techdegree seal-36
John Hill
Front End Web Development Techdegree Graduate 35,236 Points

Question on input()

Whaddup, peoples. I put together this small name reversing script, but a user can move through the script without inputting any info (by just hitting return on their keyboard). How would I prevent this??

name = input("What's your name? ").upper()
scramble = input("Did you say {}? (y/n)".format(name[::-1])).lower()
if scramble == "y":
  print("Good, I'm never wrong!")
else: 
  print("That's not true!! I know it is you {}!!".format(name[::-1]))

1 Answer

karis hutcheson
karis hutcheson
7,036 Points

Enclose the statement in a while block to check for the empty string:

name = input("What's your name? ").upper()
while(name == ""):
  print("you're dumb, try again")
  name = input("What's your name? ").upper()
scramble = input("Did you say {}? (y/n)".format(name[::-1])).lower()
if (scramble == "y"):    #added missing parenthesis here
  print("Good, I'm never wrong!")
else: 
  print("That's not true!! I know it is you {}!!".format(name[::-1]))

Python automatically parses command-line input to a string so just hitting enter only gives you an empty string.

John Hill
.a{fill-rule:evenodd;}techdegree seal-36
John Hill
Front End Web Development Techdegree Graduate 35,236 Points

Absolutely --thanks!