1️⃣ Reverse a string:
reversed_string = "Hello World"[::-1]
2️⃣ Check if a number is even:
is_even = lambda x: x % 2 == 0
3️⃣ Find the factorial of a number:
factorial = lambda x: 1 if x == 0 else x * factorial(x - 1)
4️⃣ Read a file and print its contents:
[print(line.strip()) for line in open('file.txt')]5️⃣ Create a list of squares:
squares = [x**2 for x in range(10)]
6️⃣ Flatten a list of lists:
flat_list = [item for sublist in [[1, 2], [3, 4], [5, 6]] for item in sublist]
7️⃣ Find the length of a list:
length = len([1, 2, 3, 4])
8️⃣ Create a dictionary from two lists:
keys = ['a', 'b', 'c']; values = [1, 2, 3]; dictionary = dict(zip(keys, values))
9️⃣ Generate a list of random numbers:
import random; random_numbers = [random.randint(0, 100) for _ in range(10)]
🔟 Check if a string is a palindrome:
is_palindrome = lambda s: s == s[::-1]
Mastering these one-liners can significantly improve your coding efficiency and make your code more concise.
https://t.me/pythonRe ✉️