Python List Comprehension

List comprehension is a concise way to create lists using loops and conditions in one line.

List comprehension एक आसान तरीका है जिससे हम एक ही लाइन में loop और condition के साथ list बना सकते हैं।

1. Basic Example

squares = [x*x for x in range(5)]
print(squares)

Output:

[0, 1, 4, 9, 16]

2. With if Condition

evens = [x for x in range(10) if x % 2 == 0]
print(evens)

Output:

[0, 2, 4, 6, 8]

3. With if-else Condition

results = ["Even" if x % 2 == 0 else "Odd" for x in range(5)]
print(results)

Output:

['Even', 'Odd', 'Even', 'Odd', 'Even']

4. Nested Loop Example

pairs = [(x, y) for x in [1, 2] for y in [3, 4]]
print(pairs)

Output:

[(1, 3), (1, 4), (2, 3), (2, 4)]

5. Using Functions Inside

def square(x):
    return x * x

results = [square(x) for x in range(5)]
print(results)

Output:

[0, 1, 4, 9, 16]