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Engineering LibreTexts

2.21: Python Examples

  • Page ID
    10618
  • Overview

    The following examples demonstrate data types, arithmetic operations, and input in Python.

    Data Types

    # This program demonstrates variables, literal constants, and data types.
    
    i = 1234567890
    f = 1.23456789012345
    s = "string"
    b = True
    
    print("Integer i =", i)
    print("Float f =", f)
    print("String s =", s)
    print("Boolean b =", b)
    

    Output

    Integer i = 1234567890
    Float f = 1.23456789012345
    String s = string
    Boolean b = true
    

    Discussion

    Each code element represents:

    • # begins a comment
    • i = , d = , s =, b = assign literal values to the corresponding variables
    • print() calls the print function

    Arithmetic

    # This program demonstrates arithmetic operations.
    
    a = 3
    b = 2
    
    print("a =", a)
    print("b =", b)
    print("a + b =", (a + b))
    print("a - b =", (a - b))
    print("a * b =", a * b)
    print("a / b =", a / b)
    print("a % b =", (a % b))
    

    Output

    a = 3
    b = 2
    a + b = 5
    a - b = 1
    a * b = 6
    a / b = 1.5
    a % b = 1
    

    Discussion

    Each new code element represents:

    • +, -, *, /, and % represent addition, subtraction, multiplication, division, and modulus, respectively.

    Temperature

    # This program converts an input Fahrenheit temperature to Celsius.
    
    print("Enter Fahrenheit temperature:")
    fahrenheit = float(input())
    
    celsius = (fahrenheit - 32) * 5 / 9
    
    print(str(fahrenheit) + "° Fahrenheit is " + str(celsius) + "° Celsius")
    

    Output

    Enter Fahrenheit temperature:
     100
    100.0° Fahrenheit is 37.77777777777778° Celsius
    

    Discussion

    Each new code element represents:

    • input() reads the next line from standard input
    • float() converts the input to a floating-point value