Question

How to check if input is an integer in Python

Answer 1

data = input("Enter data: ")

try:
    int(data)
    its_int = True
except ValueError:
    its_int = False

print(its_int)






'''
run:

Enter data: 3
True

'''

 

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Answer 2

data = input("Enter data: ")

print(data.isnumeric())





'''
run:

Enter data: 4
True

'''

 

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Answer 3

import re

data = input("Enter data: ")

numbers_format = re.compile(r'^\-?[1-9][0-9]*$')
is_int = re.match(numbers_format ,data)

if is_int: print("True")
else: print("False")





'''
run:

Enter data: 433

True

'''

 

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