How to fix 'TypeError: 'in ' requires string as left operand, not list' - oc... in Python

Hello, Dedicated Coders! 🖥️💡

We're excited to share with you our newest video, "How to solve 'TypeError: 'in ' requires string as left operand, not list' - occurs when checking if list elements are in a string. 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: 'in ' requires string as left operand, not list' - occurs when checking if list elements are in a string.. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

items = ['apple', 'banana']
if items in 'apple, orange, banana':
print("Found!")

Unwanted Result: 🚫
'TypeError: 'in ' requires string as left operand, not list' - occurs when checking if list elements are in a string.

Effective Resolution: ✔️

items = ['apple', 'banana']
if any(item in 'apple, orange, banana' for item in items):
print("Found!")

Desired Output: 🏁
Found!

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: Code1 fails because 'in' expects a string on the left, not a list. Code2 correctly uses a generator expression to check each item individually within a string, thereby avoiding the error. 🎯

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