19: Simple Calculator using built-in functions - 1000+ Python Programs

Our calculator will perform the following arithmetic operations using two numbers inputted by the user,

# Python Program no. 19
# Simple Calculator
# 1000+ Python Programs by Code2care.org

print("Simple Python Calculator")
print("------------------------")
input_operation = input("Enter an Operation you want to perform: + - * / % ** ")
input_number1 = float(input("Enter the 1st number: "))
input_number2 = float(input("Enter the 2nd number: "))


if input_operation == "+":
    calculation_result = input_number1 + input_number2
elif input_operation == "-":
    calculation_result = input_number1 - input_number2
elif input_operation == "*":
    calculation_result = input_number1 * input_number2
elif input_operation == "/":
    calculation_result = input_number1 / input_number2
elif input_operation == "%":
    calculation_result = input_number1 % input_number2
elif input_operation == "**":
    calculation_result = input_number1 ** input_number2
else:
    print("Invalid operation.")
    exit()

print(f"{input_number1} {input_operation} {input_number2} = {calculation_result}")

References:

• input(): https://docs.python.org/3/library/functions.html#input
• float(): https://docs.python.org/3/library/functions.html#float
• if-elif-else statements: https://docs.python.org/3/tutorial/controlflow.html#if-statements
• f-strings: https://docs.python.org/3/reference/lexical_analysis.html#f-strings
• Arithmetic operators: https://docs.python.org/3/reference/expressions.html#binary-arithmetic-operations