Remove Items from a List While Iterating - Python Last Updated : 03 Dec, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report When we need to remove items from a list while iterating, we have several options. If we need to remove specific values, using a for loop with remove() can work, but it’s important to avoid skipping items by iterating over a copy. A while loop offers more control and filter() is a good approach for filtering out items.Using List ComprehensionOne of the simplest and most efficient ways to remove items from a list is by using list comprehension. This allows us to create a new list that only includes the items we want to keep. Python a = [1, 2, 3, 6, 7, 8, 4] a = [x for x in a if x <= 5] # Keep only numbers less than or equal to 5 print(a) Output[1, 2, 3, 4] Other method that we can use to remove items from a list while iterating are:Table of ContentUsing For Loop with remove()Using While Loop and IndexingUsing filter() FunctionUsing remove()Another way is to use a for loop and the remove() method. The remove() method removes the first occurrence of a specific value from the list. However, this method can be tricky when removing multiple items or changing the list while iterating. Python a = [1, 2, 3, 6, 7, 8, 6] # Make a copy of the list to avoid skipping items for x in a[:]: if x == 6: a.remove(x) print(a) Output[1, 2, 3, 7, 8] Using While Loop and IndexingWe can also use a while loop with list indexing to manually check each item and remove it if needed. This gives us more control but requires careful handling of the index. Python a = [1, 2, 3, 6, 7, 8, 6] i = 0 while i < len(a): if a[i] == 6: # Remove the item at index i del a[i] else: # Only move to next item if no item is removed i += 1 print(a) Output[1, 2, 3, 7, 8] Using filter() FunctionThis method returns an iterator, so we need to convert it back to a list. The filter() function takes two arguments: a function that defines the condition (here, we use a lambda function) and the list we want to filter. Python a = [1, 2, 3, 6, 7, 8, 4] # Keep only numbers less than or equal to 5 a = list(filter(lambda x: x <= 5, a)) print(a) Output[1, 2, 3, 4] Comment More infoAdvertise with us Next Article Remove Items from a List While Iterating - Python P pragya22r4 Follow Improve Article Tags : Python Python Programs python-list Python list-programs python +1 More Practice Tags : pythonpythonpython-list Similar Reads How to Modify a List While Iterating in Python Modifying a list while iterating can be tricky but there are several ways to do it safely. One simple way to modify a list while iterating is by using a for loop with the index of each item. This allows us to change specific items at certain positions.Pythona = [1, 2, 3, 4] for i in range(len(a)): i 2 min read How to Remove All Items From a List in Python Removing all items from the list can be done by using various different methods in Python. Using clear()clear() method is the simplest and most efficient way to remove all items from a list.Pythona = [1, 2, 3, 4, 5] # Remove all items using clear() a.clear() # Print the empty list print(a) Output[] 2 min read Python | Remove given element from the list Given a list, write a Python program to remove the given element (list may have duplicates) from the given list. There are multiple ways we can do this task in Python. Let's see some of the Pythonic ways to do this task. Example: Input: [1, 8, 4, 9, 2] Output: [1, 8, 4, 2] Explanation: The Element 9 7 min read Remove words containing list characters - Python In this article, we will explore various methods to remove words containing list characters in Python. The simplest way to do is by using a loop.Using a LoopIterate over each word in the list and check if it contains any of the characters from remove_chars. If a word contains any of those characters 2 min read Remove empty Lists from List - Python In this article, we will explore various method to remove empty lists from a list. The simplest method is by using a for loop.Using for loopIn this method, Iterate through the list and check each item if it is empty or not. If the list is not empty then add it to the result list.Pythona = [[1, 2], [ 2 min read Like