how to build a calculator in python code example
Example 1: simple python calculator
num1 = input('Enter first number: ')
num2 = input('Enter second number: ')
sum = float(num1) + float(num2)
sum2 = float(num1) - float(num2)
sum3 = float(num1) * float(num2)
sum4 = float(num1) / float(num2)
choice = input('Enter an operator, + = addition, - = subtraction, * = multiplication and / = division: ')
if choice == '+':
print('The sum of {0} and {1} is {2}'.format(num1, num2, sum))
if choice == '-':
print('The sum of {0} and {1} is {2}'.format(num1, num2, sum2))
if choice == '*':
print('The sum of {0} and {1} is {2}'.format(num1, num2, sum3))
if choice == '/':
print('The sum of {0} and {1} is {2}'.format(num1, num2, sum4))
Example 2: python calculator
num_one = int(input("Enter 1st number: "))
op = input("Enter operator: ")
num_two = int(input("Enter 2nd number: "))
if op == "+":
print(num_one + num_two)
elif op == "-":
print(num_one - num_two)
elif op == "*" or op == "x":
print(num_one * num_two)
elif op == "/":
print(num_one / num_two)
Example 3: how to make a calculator using idle
def calculate():
operation = input('''
Please type in the math operation you would like to complete:
+ for addition
- for subtraction
* for multiplication
/ for division
''')
number_1 = int(input('Please enter the first number: '))
number_2 = int(input('Please enter the second number: '))
if operation == '+':
print('{} + {} = '.format(number_1, number_2))
print(number_1 + number_2)
elif operation == '-':
print('{} - {} = '.format(number_1, number_2))
print(number_1 - number_2)
elif operation == '*':
print('{} * {} = '.format(number_1, number_2))
print(number_1 * number_2)
elif operation == '/':
print('{} / {} = '.format(number_1, number_2))
print(number_1 / number_2)
else:
print('You have not typed a valid operator, please run the program again.')
again()
def again():
calc_again = input('''
Do you want to calculate again?
Please type Y for YES or N for NO.
''')
if calc_again.upper() == 'Y':
calculate()
elif calc_again.upper() == 'N':
print('See you later.')
else:
again()
calculate()
Example 4: python calculator
try:
num1 = float(input("Please Enter The first number: "))
operator = input("Please choose the operator (+) for addition, (-) for subtraction, (*) for multiplication"
"(/) for division , (%) for remainder: ")
num2 = float(input("Please Enter The second number: "))
if operator == '+':
result = num1 + num2
print("The result is: ", result)
elif operator == '-':
result = num1 - num2
print("The result is: ", result)
elif operator == '*':
result = num1 * num2
print("The result is: ", result)
elif operator == '/':
try:
if True:
result = num1 / num2
print(result)
except ZeroDivisionError as err:
print(err, " oops! zero division occur ")
elif operator == '%':
if operator == '%':
result = num1 % num2
print("The result is: ", result)
else:
raise TypeError
except ValueError:
print("wrong value, suggest integer or decimal")
finally:
print("All Done")