Beginner here. Thank you for the downvotes already <3

i have been wondering this for a longer time If i check for user input, i know how to check for strings. But what if i want to check if the user has entered just integers or floats. I tried it with an "if name == int or float: block but of course that didn't work. Can you help me out? How do i check for that? Here is my code. Of course the input i always converted to a string so i don't know how to do that.

print("Enter a name: ")
while True:
    name = input()
    if name != "":
        print("Thank you for entering a name: ")
        break
    else:
        print("Please enter a name: ")

i also tried this:

print("Enter a name: ")
while True:
    name = input()
    if type(name) != int:
        print("Thats not a name!")
        print("Now please enter a name without numbers")
    elif type(name) != float:
        print("Thats also not a name!")
        print("Now please enter a name without numbers")
    elif type(name) != "":
        print("Thank you for entering your name!")
        break
    else:
        print("Please enter a name: ")

CodePudding user response：

As far as I know, the answer to this is probably this instead.

print("Enter a name: ")
while True:
    name = input()
    if type(name) != int:
        print("Thank you for entering a name: ")
        break
    else:
        print("Please enter a name: ")

Also I can understand why you did that. The previous code you created meant that if the user typed the class int. This will be impossible to type a class because input() only takes a string from the user's input.

CodePudding user response：

For int you can use the isnumeric() method

"1".isnumeric() #True

For float, you should try if casting to float is possible

 def isFloat(num):
    try:
        float(num)
        return True
    except ValueError:
        return False

Now use both these methods :

print("Enter a name: ")
while True:
    name = input()
    if name.isnumeric() or isFloat(name):
        print("Thats not a name!")
        print("Now please enter a name without numbers")
    elif type(name) != "":
        print("Thank you for entering your name!")
        break
    else:
        print("Please enter a name: ")

Output :

Enter a name: 
1
Thats not a name!
Now please enter a name without numbers
1.2
Thats not a name!
Now please enter a name without numbers
abc
Thank you for entering your name!