Comments¶

As programs get bigger and more complicated, they get more difficult to read.
For this reason, it is a good idea to add notes to your programs to explain in natural language what the program is doing.
A comment in a computer program is text that is intended only for the human reader — it is completely ignored by the interpreter.
Blank lines are also ignored by the interpreter.

In Python, the # token starts a comment. The rest of the line is ignored.

Here is a new version of Hello, World!.

#---------------------------------------------------
# This demo program shows off how elegant Python is!
# Written by Joe Soap, December 2010.
# Anyone may freely copy or modify this program.
#---------------------------------------------------

print("Hello, World!")     # Isn't this easy!

(ch01_3)

Note

This workspace is provided for your convenience. You can use this activecode window to try out anything you like.

(scratch_01)