Modules and Packages

15 min In Progress

Learning Objectives

  • Import built-in and custom modules
  • Use from...import syntax
  • Explore module contents with dir()

Importing Modules

Use import to bring in code from other files or the standard library.

import math
print(math.pi)
print(math.sqrt(16))

Selective Imports

Import only what you need to keep namespaces clean.

from random import randint, choice
print(randint(1, 6))
print(choice(["apple", "banana", "cherry"]))

Course Example: Package Enumerator

List all resources defined in a module using dir().

import math

resources = dir(math)
for resource in resources:
    print(resource)

📝 Exercise: Date Formatter

Import datetime and print the current date in YYYY-MM-DD format.

code.py
Output

            

        

    


    

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