How to fix TypeError: 'type' object is not subscriptable in Python

Published: 10 May 2024
on channel: How To Fix

Hello, Dedicated Coders! 🖥️💡

We're excited to share with you our newest video, "How to solve TypeError: 'type' object is not subscriptable 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: 'type' object is not subscriptable. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

list[int]

Unwanted Result: 🚫
TypeError: 'type' object is not subscriptable

Effective Resolution: ✔️
from typing import List

list_of_ints: List[int] = []

Desired Output: 🏁
This code does not produce any output when run.

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: Code1 uses subscript notation with a built-in type directly, which isn't allowed prior to Python 3.9. Code2 corrects this by importing the List type from the typing module, allowing subscript usage. 🎯

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