one-liner-python-code.md

One Liners Python Code

10 Python one-liners that showcase elegance, cleverness, and real-world usefulness.

Reverse a String

text = “clcoding”
print(text[::-1])

[::-1] slices the string backward. Simple, compact, wonderful.

Find Even Numbers From a List

nums = [1, 2, 3, 4, 5, 6]
evens = [n for n in nums if n % 2 == 0]

List comprehensions let you filter and transform with grace.

Check If Two Words Are Anagrams

print(sorted(”listen”) == sorted(”silent”))

Sorting characters reveals structural equivalence.

Count Frequency of Items

from collections import Counter
print(Counter(”banana”))

The result beautifully tells how many times each item appears.

Swap Two Variables Without Temp

a, b = 5, 10
a, b = b, a

Python makes swapping feel like a tiny magic trick.

Flatten a List of Lists

flat = [x for row in [[1,2],[3,4]] for x in row]

Nested list comprehension walks down layers elegantly.

Read a File in One Line

data = open(”file.txt”).read()

Great for quick scripts. Just remember to close or use with for production.

Get Unique Elements From a List

unique = list(set([1,2,2,3,4,4,5]))

Sets remove duplicates like a digital comb.

Reverse a List

nums = [1, 2, 3, 4]
nums.reverse()

A one-liner that modifies the list in place.

Simple Inline If-Else

age = 19
result = “Adult” if age >= 18 else “Minor”

Readable, expressive, and close to natural language.

Reference

• Python Coding @ SubStack.com