Using the itertools.tee() function to duplicate iterators

itertools.tee() is an interesting function from the itertools module that allows you to create multiple independent copies of the same iterator.

🗣️ This is useful when you need to iterate over the same data in different parts of the code simultaneously, without repeating calculations.

✔️ itertools.tee() makes working with iterators more flexible and convenient.

from itertools import tee

# Create an iterator
numbers = iter([1, 2, 3, 4, 5])

# Create two independent copies of the iterator
numbers1, numbers2 = tee(numbers, 2)

print(list(numbers1))
print(list(numbers2))
# [1, 2, 3, 4, 5]
# [1, 2, 3, 4, 5]

# Execution result:

# [1, 2, 3, 4, 5]

# [1, 2, 3, 4, 5]