Can you explain the concept of generators in Python and provide an example?

Generators are a way to create iterators in Python. They allow you to iterate over a sequence of values without creating the entire sequence in memory at once. This is especially useful for large datasets. Here's a simple generator example that generates squares of numbers:

def square_generator(n):
    for i in range(n):
        yield i ** 2

# Using the generator
squares = square_generator(5)
for num in squares:
    print(num)