squares = [x**2 for x in range(5)]

squares = []
for x in range(5):
    squares.append(x**2)

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

keys = ["a", "b"]
values = [1, 2]
data = {k: v for k, v in zip(keys, values)}

nested = [[1, 2], [3, 4], [5]]
flat = [item for sublist in nested for item in sublist]

status = ["even" if x % 2 == 0 else "odd" for x in range(5)]

def transform(x):
    return x * 10

result = [transform(x) for x in range(5)]

result = [x for x in range(20) if x > 5 if x % 2 == 0]

matrix = [[i * j for j in range(3)] for i in range(3)]