Looping with a while statement while reading a string for an integer

Question

I need help encasing the:

if any(c.isdigit() for c in name):
print("Not a valid name!")

inside of a while statement. This pretty much just reads the input for the "name" variable and sees if there's an integer in it. How could I use that in a while statement? I just want it to be if the user inputs a variable into the input, it will print out the string up above and loop back and ask the user for their name again until they successfully enter in a string with no integer, then I want it to break. Any help?

print("Hello there!")
yn = None
while yn != "y":
    print("What is your name?")
    name = raw_input()
    if any(c.isdigit() for c in name):
        print("Not a valid name!")
    print("Oh, so your name is {0}? Cool!".format(name))
    print("Now how old are you?")
    age = raw_input()
    print("So your name is {0} and you're {1} years old?".format(name, age))
    print("y/n?")
    yn = raw_input()
    if yn == "y":
        break
    if yn == "n":
        print("Then here, try again!")
print("Cool!")

Martijn Pieters · Accepted Answer · 2013-05-09 18:11:48Z

1

Use while True and a break to end the loop when a valid name has been entered:

while True:
    name = raw_input("What is your name? ")
    if not any(c.isdigit() for c in name):
        break
    print("Not a valid name!")

This is much easier than first initializing name to something that is invalid then using the any() expression in the while test.

answered May 9, 2013 at 18:11

Martijn Pieters

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Comments

Ashwini Chaudhary · Accepted Answer · 2013-05-09 18:13:11Z

0

Something like this:

name = input("What is your name? : ")
while any(c.isdigit() for c in name): 
    print ("{0} is invalid, Try again".format(name))
    name = input("What is your name? : ")

demo:

What is your name? : foo1
foo1 is invalid, Try again
What is your name? : 10bar
10bar is invalid, Try again
What is your name? : qwerty

answered May 9, 2013 at 18:13

Ashwini Chaudhary

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Comments

Markku K. · Accepted Answer · 2013-05-09 18:19:11Z

0

Are you just saying you want a continue after your print("Not a valid name!")?

print("Hello there!")
yn = None
while yn != "y":
    print("What is your name?")
    name = raw_input()
    if any(c.isdigit() for c in name):
        print("Not a valid name!")
        continue
    print("Oh, so your name is {0}? Cool!".format(name))
    ...

The continue will just go back to the top of your loop.

answered May 9, 2013 at 18:19

Markku K.

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2 Comments

mwstray Over a year ago

Yes, I want it to keep looping until the user enters a valid name (One with no integers)

Markku K. Over a year ago

So ... isn't this the answer to your question, then?

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