How to Loop Through Lists in Python: 10 Useful Techniques

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May 11, 2025 By Alison Perry

Working with lists in Python is pretty common, and looping through them is one of those things you do all the time without even thinking about it. Whether you’re trying to clean up data, build something new, or just explore what’s in a list, there are a few clean and easy ways to get through each element. The great thing about Python is that it keeps things readable no matter how you choose to do it. Some ways are more readable, some are faster, and some give you a bit more control.

Let’s look at different ways to iterate through a list in Python. You don’t need to follow a specific order — just pick the one that fits what you’re doing.

Ways to Iterate over a List in Python

Using a for Loop

This is the most direct and readable way to go through a list. It doesn’t care about index numbers unless you ask for them — it just gives you the items one by one.

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fruits = ['apple', 'banana', 'cherry']

for fruit in fruits:

print(fruit)

You get each item straight from the list, so there is no need to worry about positions or ranges. It's simple, clean, and probably the most widely used option.

Using range() with Indexing

If you do need the index — maybe because you're updating elements or checking positions — then combining range() with indexing is helpful.

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fruits = ['apple', 'banana', 'cherry']

for i in range(len(fruits)):

print(f"Index {i}: {fruits[i]}")

This one gives you access to both the index and the item. It’s slightly longer than the direct for loop, but it works better when position matters.

Using enumerate()

If you want both the index and the item but want to keep things tidy, enumerate() is your friend. It gives you everything you get from range(len(...)) but in a cleaner way.

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fruits = ['apple', 'banana', 'cherry']

for index, fruit in enumerate(fruits):

print(f"Index {index}: {fruit}")

This way is often preferred over range(len(...)) since it’s more readable and made for exactly this kind of task.

Using a while Loop

It is not as common for simple list iteration, but it is still valid. A while loop is more flexible and lets you control the flow manually. It’s useful when the loop conditions might change in more complex situations.

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fruits = ['apple', 'banana', 'cherry']

i = 0

while i < len(fruits):

print(fruits[i])

i += 1

Here, you have full control. You decide when to start and when to stop. It’s a bit longer but works when the loop needs more logic inside.

Using List Comprehension

This one is mostly used when you’re building a new list or running a short action. It's compact and makes the loop a one-liner.

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fruits = ['apple', 'banana', 'cherry']

[print(fruit) for fruit in fruits]

Technically, this runs the loop and prints each item. But list comprehensions are better when you’re collecting results, not just printing. For example:

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uppercase_fruits = [fruit.upper() for fruit in fruits]

This will give you a new list with all items in uppercase.

Using map() Function

When you want to apply a function to every element and get a new list out of it, map() works well. It’s fast and functional, especially when the transformation is straightforward.

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fruits = ['apple', 'banana', 'cherry']

def to_uppercase(word):

return word.upper()

result = list(map(to_uppercase, fruits))

print(result)

Or you can use a lambda to keep it short:

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result = list(map(lambda x: x.upper(), fruits))

Keep in mind, map() doesn’t work well when you just want to print or do something for each item — it’s best when you're generating something.

Using List Iterators Directly

Every list in Python has an internal iterator that you can access with the iter() function. It's rarely used for everyday tasks, but it's useful if you're managing the loop step-by-step or building custom logic.

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fruits = ['apple', 'banana', 'cherry']

it = iter(fruits)

print(next(it)) # 'apple'

print(next(it)) # 'banana'

print(next(it)) # 'cherry'

This lets you move through the list one item at a time. If you try to go past the last item, you’ll get a StopIteration error. This is mostly used in special cases, like custom loops or when working with generators.

Using a Recursive Function

This one's not very common for list iteration, but it does work, especially when you're dealing with nested lists or data that needs recursive handling.

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def print_items(lst, index=0):

if index < len(lst):

print(lst[index])

print_items(lst, index + 1)

fruits = ['apple', 'banana', 'cherry']

print_items(fruits)

It’s a little more effort than it’s worth in most cases, but it shows another way to move through the list when needed.

Using zip() with Another List

If you’re working with two lists side-by-side and want to loop through both at once, zip() makes it easy. You can iterate through two or more sequences at the same time.

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fruits = ['apple', 'banana', 'cherry']

colors = ['red', 'yellow', 'dark red']

for fruit, color in zip(fruits, colors):

print(f"{fruit} is {color}")

It's clean and keeps both lists in sync while you work with them together. If the lists are of different lengths, they stop at the shortest one.

Using collections.deque with popleft()

This one’s useful when you’re working with a large list and need to remove items as you go. deque lets you pop from the front efficiently.

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from collections import deque

fruits = deque(['apple', 'banana', 'cherry'])

while fruits:

print(fruits.popleft())

This modifies the list as you go, which might be exactly what you want when processing queues or streaming items. It's not a standard list, but it works almost the same for iteration purposes.

Closing Thoughts

There’s no one right way to loop through a list in Python. It really depends on whether you need the index, want to keep the code compact, or care about memory and speed. The options above give you control, simplicity, and flexibility — so whether you’re writing something quick or building out something more involved, you’ve got the tools to handle it neatly.

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