This Built-in Modules lesson is for a beginner. Read the short notes, run each example, then change one name or number and run it again.
The standard library ships with Python. math, random, statistics, json, re, datetime, pathlib, and collections are the modules this course uses.
Import a module at the top of the file.
Example 1: Start here
A third-party package such as requests is not in the standard library. Install it with pip.
import math # load a tool that comes with Python
print(math.floor(3.9))
Example 2: Store the idea in a name
Built-in Modules begins with a value you can point at. The name topic holds that text.
topic = "Built-in Modules" # text
print(topic)
Example 3: Check it with if
An if chooses one branch. Change the score and run it again to see the other message.
score = 17 # a whole number
if score >= 80: # run the indented lines only when this is true
print("Pass")
else: # runs when the test above was false
print("Try again")
Example 4: Repeat with a loop
A for loop runs the indented line once per step. The numbers 1, 2, and 3 are printed on their own lines.
for step in range(1, 4): # repeat once per number; range stops before the last
print("Step", step) # a comma prints each value, with a space between
A third-party package such as requests is not in the standard library. Install it with pip.
