1. Every Python file is a module, ending in the suffix: .py
2. Modules are a collection of functions and variables.
3. Packages are a collection of modules.
4. Module functions and variables are accessed using the import statement; for example: import math.
5. Specific functions and variables may be imported using the from statement; for example: from math import pi.
6. The help() function displays all of the available functions and variables in a module; for example: help(math)