This depends on the type of project...
But for this instance I will do a calculator:
import math
print("1.Addition")
print("2.Subtraction")
print("3.Multiplication")
print("4.Division")
print("5.Exponents")
print("6.Squareroot")
print()
user_choice = input('What choice?: ')
if '1' in user_choice:
first_digit = input('Enter first didgit: ')
second_digit = input('enter second digit: ')
#Setting addition
end_result_of_addition = float(first_digit) + float(second_digit)
#Addition
print(end_result_of_addition)
print()
print('done')
if '2' in user_choice:
first_digit = input('Enter first didgit: ')
second_digit = input('enter second digit: ')
#Setting subtraction
end_result_of_subtraction = float(first_digit) - float(second_digit)
#Subtraction
print(end_result_of_subtraction)
print('done')
if '3' in user_choice:
first_digit = input('Enter first didgit: ')
second_digit = input('enter second digit: ')
#Setting multiplaction
end_result_of_multiplication = float(first_digit) * float(second_digit)
#Multiplication
print(end_result_of_multiplication)
print()
print('done')
if '4' in user_choice:
first_digit = input('Enter first didgit: ')
second_digit = input('enter second digit: ')
#Setting division
end_result_of_division = float(first_digit) / float(second_digit)
#Division
print(end_result_of_division)
print()
print('done')
if '5' in user_choice:
base = input('enter base: ')
exponent = input('enter exponent: ')
print()
print(" ",exponent)
print(base,"^")
print()
print('solving')
print()
#Setting exponents
user_choice_of_exponent = float(base) ** int(exponent)
print(user_choice_of_exponent)
print()
if '6' in user_choice:
first_digit = input('what number?: ')
print()
print(math.sqrt(float(first_digit)))
print()
print('done')
print()