Add and Update Values from a List in Python (Append, Extend, Insert) - Python Tutorial for Beginners

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🖥️ ADD and UPDATE Values from a List in Python (Append, Extend, Insert)

○ Add items into a List in Python

Adding items into a List in Python or updating items from a List in Python is very easy. Lists are mutable, which means their elements can be changed. In fact, you can add one item into a list using the method append(), or add several items at once using method extend().

To add new values into a list in Python, use the method append(). This method adds items only to the end of the list.

my_list = ['red', 'green', 'blue']

# my_list = ['red', 'green', 'blue', 'yellow']

Furthermore, you can insert one item at a desired location, by using the method insert() in Python. If you want to insert an item at a specific position in a list, you will use the insert() method. Note that: All of the values in the list after the inserted value will be moved down one index.

my_list = ['red', 'green', 'blue']

# my_list = ['red', 'yellow', 'green', 'blue']

○ Update items from a List in Python

Updating an entry to an existing list is simply a matter of assigning a new value, with the assignment operator (=). Thus, you can replace an existing element with its new value, by assigning the new value to the desired index. Note that: List indexing in Python is zero-based, as it is with strings.

my_list = ['red', 'green', 'blue']

my_list[0] = 'yellow'
# my_list = ['yellow', 'green', 'blue']

my_list[-1] = 'orange'
# my_list = ['yellow', 'green', 'orange']

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[DigitalAcademyOnline]

Do you know How to Add / Update items in a List, in Python? 🤔

[chloejbt]

Thanks a lot for sharing a new video everyday