How can I use list comprehension with nested loops in Python?

How can I use list comprehension with nested loops in Python?

You can use list comprehension to create a new list by combining elements from multiple lists. For example, if you have two lists, you can use nested loops in a list comprehension like this:

result = [(x, y) for x in list1 for y in list2]

Can you give me a specific example with numbers?

Sure! If you have list1 = [1, 2] and list2 = [3, 4], the list comprehension would look like this:

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

This would produce [(1, 3), (1, 4), (2, 3), (2, 4)].

What if I want to filter the results?

You can add a condition at the end of the comprehension. For example:

result = [(x, y) for x in [1, 2] for y in [3, 4] if x + y > 5]

This will only include pairs where the sum is greater than 5.

That's really helpful! Can you explain how it works step by step?

Of course! The comprehension iterates over each element in list1 and list2. For each pair, it checks the condition (if any) and includes it in the result if the condition is met. This way, you can efficiently create filtered combinations.