How to fix 'TypeError: can only concatenate list (not 'int') to list' when i... in Python

Hello, Dedicated Coders! 🖥️💡

We're excited to share with you our newest video, "How to solve "TypeError: can only concatenate list (not 'int') to list" when inserting a single number into existing list. in Python". 🎥 This series is meticulously designed to arm you with knowledge 🧠 and skills 🛠️ to overcome frequent coding challenges.

Today, we will decipher 🔎 and resolve a common error faced by Python coders: the bit hard to solve "TypeError: can only concatenate list (not 'int') to list" when inserting a single number into existing list.. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

numbers = [1, 2, 3]
numbers = numbers + 4

Unwanted Result: 🚫
"TypeError: can only concatenate list (not 'int') to list" when inserting a single number into existing list.

Effective Resolution: ✔️

numbers = [1, 2, 3]

Desired Output: 🏁
[1, 2, 3, 4]

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: In Code1, you can't add an integer directly to a list. Instead use `append()` or `extend()` method, or use `numbers + [4]` to concatenate lists. Code2 correctly appends 4 to the list. 🎯

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