How to fix 'TypeError: argument of type 'X' is not iterable' when checking f... in Python

Hello, Dedicated Coders! 🖥️💡

We're excited to share with you our newest video, "How to solve 'TypeError: argument of type 'X' is not iterable' when checking for item existence in custom range function. 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: argument of type 'X' is not iterable' when checking for item existence in custom range function.. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

def custom_range(start, end):
return (start + i for i in range(end - start))

if 5 in custom_range(1, 10):
print("Found")

Unwanted Result: 🚫
'TypeError: argument of type 'X' is not iterable' when checking for item existence in custom range function.

Effective Resolution: ✔️

def custom_range(start, end):
return (start + i for i in range(end - start))

if 5 in list(custom_range(1, 10)):
print("Found")

Desired Output: 🏁
Found

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: In Code1, the custom_range function incorrectly returns a generator, which cannot be directly used with 'in'. Code2 fixes this by converting the generator to a list, making it iterable. 🎯

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