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Mikkel Bielefeldt
Mikkel Bielefeldt
3,227 Points

How to check for number in name?

Let's say for example that I'm making a program that's only checking your name. How do you make it so it checks for numbers? Cause in my opinion I think it should be like this

if name == float or int:
    print("Unvalid character.")

But that doesn't seem to be right.

2 Answers

Steven Parker
Steven Parker
229,582 Points

First, to check the type of a variable, you would use the type() function along with the "is" operator. So instead of "name == float" you might have "type(name) is float".

And then, logic operators like "or" only combine complete expressions. So for example if you wanted to test if "n" was either 3 or 5 you would not write "n == 3 or 5" (that would always be true, no mater what "n" was), but you could write "n == 3 or n == 5".

And finally, where did "name" come from? If it was assigned from an "input" for example, it would always be a string, even if the user typed only digits. In that case, you'd probably want to check the individual characters for digits as Kris suggested.

A function for checking if a string contains a number from stackoverflow

def hasNumbers(inputString):
    return any(char.isdigit() for char in inputString)