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Python code samples

Copy-ready Python snippets by topic and difficulty — short, focused, and runnable in the browser editor.

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Lists & loops medium

List comprehension filter

Build a new list in one line by filtering and transforming items.

lists comprehension filter

Python

numbers = [1, 2, 3, 4, 5, 6, 7, 8]
doubled_evens = [n * 2 for n in numbers if n % 2 == 0]
print(doubled_evens)

names = ["ada", "linus", "guido"]
title_case = [name.title() for name in names if name]
print(title_case)

4 0 Open

Lists & loops easy

Enumerate with index

Loop with both index and value — cleaner than manual counters.

loops enumerate lists

Python

tasks = ["read docs", "write code", "run tests"]

for i, task in enumerate(tasks, start=1):
    print(f"{i}. {task}")

5 0 Open

Lists & loops easy

Zip two lists

Pair items from parallel lists and iterate them together.

lists zip loops

Python

names = ["Ada", "Grace", "Katherine"]
scores = [98, 95, 100]

for name, score in zip(names, scores):
    print(f"{name}: {score}")

print(list(zip(names, scores)))

3 0 Open

Browse by section

Each section groups closely related Python snippets.

Strings & text 3 Lists & loops 3 Functions & basics 2 Files & data 2 Errors & debugging 2