Python's List Comprehensions provide a compact and elegant way to create lists. They offer a more readable and often more performant alternative to traditional loops for list creation and transformation.

# Create a list of squares using a traditional loop
squares_loop = []
for i in range(5):
    squares_loop.append(i  i)
print(f"Traditional loop: {squares_loop}")

Achieve the same with a list comprehension

squares_comprehension = [i  i for i in range(5)]
print(f"List comprehension: {squares_comprehension}")

List comprehension with a condition (even numbers only)

even_numbers_squared = [i * i for i in range(10) if i % 2 == 0]
print(f"Even numbers squared: {even_numbers_squared}")

Output:

Traditional loop: [0, 1, 4, 9, 16]
List comprehension: [0, 1, 4, 9, 16]
Even numbers squared: [0, 4, 16, 36, 64]

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By: @DataScienceQ 🧡