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What is a generator in Python and how to use it?

A generator in Python is a special type of iterator that can be used to iterate over a set of values. Generators are used to generate values on-the-fly in a lazy manner, meaning that values are only generated when they are actually needed, rather than all at once when the generator is created.

You can create a generator in Python using the "yield" statement inside a function. To use a generator, you can simply call the function that contains the "yield" statement, and then iterate over the generated values using a for loop.

Here's an example that shows how to create and use a generator in Python:

def generator_example():
    for i in range(5):
        yield i

# Use the generator
for value in generator_example():
    print(value)

The output of this code will be:

0
1
2
3
4

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