Check python var if int

Question

I am trying to get python to check if a certain variable is an int

    numbergames = input("Number of Games to Analyze: ")
valuenumber = True
while valuenumber == True:
    if numbergames == int:
        valuenumber = False
    if numbergames != int:
        numbergames = input("Please type a valid number: ")
print("Thanks")

The code is getting stuck and is not getting out of the loop even thought the number typed is an int.

Asked By: JJd

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Source

Answer 1

In general, it is discouraged to use type() as identifying if an input is int, float, etc. This is because it does not register a subclass of int as an int.

Instead, use isinstance('var', (int, long)) which will give the right result expected. So your code will take the form of:

numberGames = input("Number of Games to Analyze: ")

while True:
    if isinstance( numberGames, (int, long) ):
        break
    else:
        numberGames = input("Please type a valid number: ")
print("Thanks")

You don’t need the valueNumber variable because its only use is as a flag for the while loop. Instead, it could continue running indefinitely with True until it reaches break because the statement tells the program to exit the loop.

Answered By: Qubic Lens

Check python var if int

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