10 lessons · The Host · Lesson 1 free
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Lesson 1 · On the house
Comprehensions
Build a list in one honest line.

Lesson 2
dict.get
Miss without a crash.

Lesson 3
set
Unique values only.

Lesson 4
kwargs
Name the arguments.

Lesson 5
lambda
A tiny nameless function.

Lesson 6
map and filter
Walk with intent.

Lesson 7
Path ideas
pathlib.Path — paths as objects.

Lesson 8
JSON
dumps and loads.

Lesson 9
dataclass
A small structured record.

Lesson 10
Package layout
A module you can import.
Certificate
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