Python: Hello World

  1. Introduction to Python
  2. Python: Choosing a Text Editor or IDE
  3. Python: Hello World
  4. Python: Variables, Strings and Numbers
  5. Python: Variable Naming
  6. Python: Math, Familiar
  7. Python: Math, Less Familiar
  8. Python: Mathematical Order of Operations
  9. Python: Introducing PEP 8
  10. Python: Text Concatenation
  11. Python: if Statements and Comparison Operators
  12. Python: else and elif statements
  13. Python: Testing Multiple Conditions
  14. Python: Testing Sets of Conditions
  15. Python: Nested if Statements
  16. Python: Lists
  17. Python: Adding To and Changing Lists
  18. Python: Lists: Take a Slice, Delete Elements, Popping Elements
  19. Python: Tuples
  20. Python: for Loops
  21. Python: Nested for Loops
  22. Python: Capturing and Formatting User Input
  23. Python: Dictionaries
  24. Python: Functions
  25. Python: While Loops
  26. Python: Data Files
  27. Python: Using Pexpect
  28. Python : Using Pexpect :
  29. Python : Using Pexpect:
  30. Python: DCL Conversion to Python

We’re going to start with Chapter 1 of A Smarter Way.

1. Open a Linux terminal.

Then run the command:


2. Simple Print Output: “Hello World”

print("Hello, World!")

Older versions of Python (most often the classic 2.7) can use slightly different syntax:

print "Hello, World!"

Note that in the first example, there are no spaces. This is a stylistic thing, which is a very big deal in Python. We’ll look at this more closely when we look at PEP 8.


Go to and review the exercises.

Go to and run the examples.

  1. Begin a new script file in nano.
  2. Name it
  3. Make it print out one line of text: “Welcome to the Examples”.