Python hello world example

#!/usr/bin/env python3
"""
Some various ways of saying Hello World in Python
"""

def hello():
    """
    Print out Hello World in a function.
    """
    print("Hello World in a function.")

# Call a function that prints out Hello World
hello()

# Print out Hello World
print("Just saying Hello World")

# Assign the string Hello World to a variable and print it out
str = "Hello World in a variable"
print(str)