Python Examples
Dave Braunschweig
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 commenti = , d = , s =, b =
assign literal values to the corresponding variablesprint()
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 inputfloat()
converts the input to a floating-point value