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| Python coding illustration |
Hello there! Good morning. I hope you're doing well and staying healthy. I’m excited to share another coding demonstration with you! In this post, I’ll explain three effective methods for removing values from lists in Python. This is a simple and practical demonstration that’s easy to follow. To make it even clearer, I’ve included a full video demonstration that walks you through each method and line of code step by step.
Let’s jump right in!
Design
I designed this demonstration as a reusable module. This way, if I ever need it in the future, I can simply import the module into my program and use it as often as required, without rewriting the same code repeatedly.
Class Storage
As always, I use a storage class to store all the configurations or serve as a data repository for the program. For this demonstration, I’ve included an example of list data stored in the storage class, which we’ll debug to showcase how it works.
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| Storage class |
Class DeleteFromList
This is the main class, DeleteFromList, which provides methods for removing items from a list in Python. The class is designed with flexibility and reusability in mind, making it easy to handle various scenarios where list modifications are needed:
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| DeleteFromList class and the methods |
Method delete_with_remove()
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| Method delete_with_remove() |
The delete_with_remove method removes specified items from a list using Python's built-in remove() method. It takes a list of items to delete and checks if each item exists in the target list. If an item is found, it is removed; if not, an error message is printed, and the item is skipped. This method ensures that only existing items are removed, handling errors gracefully without crashing the program. It’s a practical way to delete multiple values from a list while maintaining a smooth execution flow.
Method delete_with_pop()
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| Method delete_with_pop() |
The delete_with_pop method removes items from a list using the pop() method, which deletes elements based on their indices. It accepts a list of indices (items_to_delete) and iterates through them. For each index, it first checks if the index is an integer and if it is within the valid range of the list. If the index is invalid or out of range, an error message is printed, and the index is skipped. If the index is valid, the item at that position is removed using pop(). This method is ideal for deleting items when you know the exact positions of the elements to be removed.
Method delete_with_del()
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| Method delete_with_del() |
The delete_with_del method removes items from a list using the del statement, which allows for deleting elements at specific indices. It takes a list of indices (items_to_delete) and iterates through each one. The method first checks if the index is an integer and if it lies within the valid range of the list. If the index is invalid or out of range, an error message is printed, and the index is skipped. If valid, the item at that index is removed using del. This method provides a way to delete items from a list by directly addressing their positions, with error handling for invalid indices.
Debug
In this debug section, I will use the delete_with_remove() method to remove the item 'Penguin' from the list. For a clearer demonstration and better understanding, please refer to the video demonstration instead:
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| Debug using delete_with_remove() to remove 'Penguin' from list |
When I run the debug code, the resulting list shows that "Penguin" has been successfully removed.
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| Penguin is now removed |
For more clear understanding and full coding demonstration, please watch this video:
