Python Cheat Sheet

print("Hello, world!")

# Print text

x, y = 10, 20

# Multiple assignment

a, b = b, a

# Swap variables

name = input("Name: ")

# Read input

python -c "print(sum(range(10)))"

# Command-line one-liner

python -m http.server 8000

# Run a module

quotient = 7 // 3

# Integer division

remainder = 7 % 3

# Modulo

power = 2 ** 8

# Exponentiation

is_between = 1 < x < 10

# Chained comparison

username = supplied_name or "anonymous"

# Truthy fallback

label = "adult" if age >= 18 else "minor"

# Ternary expression

if score >= 90:
    grade = "A"
elif score >= 80:
    grade = "B"
else:
    grade = "C"

# If / elif / else

for name in names:
    print(name)

# For over a list

for idx, value in enumerate(items, start=1):
    print(idx, value)

# For with enumerate

for name, score in zip(names, scores):
    print(name, score)

# For with zip

while queue:
    item = queue.pop(0)
    print(item)

# While loop

for item in items:
    if item == target:
        print("found")
        break
else:
    print("not found")

# Loop with else

match status:
    case 200:
        message = "ok"
    case 404:
        message = "not found"
    case _:
        message = "other"

# Match statement

items = [1, 2, 3]

# List literal

point = (10, 20)

# Tuple literal

tags = {"python", "api", "cli"}

# Set literal

user = {"id": 1, "name": "Ada"}

# Dictionary literal

if "python" in tags:
    print("present")

# Membership test

first, *middle, last = values

# Destructuring assignment