PYTHON

how to check if user is using main file or importing the file and using in python

def calculate_adding(num1,num2):
    return num1 + num2
if __name__ == '__main__':
    print("Hi you are using editor not importing")
    print(calculate_adding(90,10))
if __name__ != '__main__':
    print("You are importing me and using me")
#output
'''
Hi you are using editor not importing
100
'''

how to check if user is using main file or importing the file and using in python

#in another file
from first_program import calculate_adding
number1 = int(input("Number 1:- "))
number2 = int(input("Number 2:- "))
print(calculate_adding(number1,number2))
#output
'''
You are using me after importing
Number 1:- 90
Number 2:- 90
180
'''