How to fix TypeError: new() missing required positional arguments: 'var2... in Python

Published: 13 May 2024
on channel: ORGVSM - Bedroom Playlist & Mix

Hello, Dedicated Coders! 🖥️💡

We're excited to share with you our newest video, "How to solve TypeError: __new__() missing required positional arguments: 'var2', 'var3' 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: __new__() missing required positional arguments: 'var2', 'var3'. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

class CustomClass:
def __new__(cls, var1, var2, var3):
return super(CustomClass, cls).__new__(cls)

obj = CustomClass(1)

Unwanted Result: 🚫
TypeError: __new__() missing required positional arguments: 'var2', 'var3'

Effective Resolution: ✔️

class CustomClass:
def __new__(cls, var1, var2, var3):
return super(CustomClass, cls).__new__(cls)

obj = CustomClass(1, 2, 3)

Desired Output: 🏁

Traceback (most recent call last):
File "script.py", line 6, in less thanmodulegreater than
obj = CustomClass(1, 2, 3)
TypeError: object.__new__() takes exactly one argument (the type to instantiate)

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: In Code1, the error occurs because `CustomClass`'s `__new__` method expects three arguments, but only one was provided. Code2 correctly passes three arguments, thus it doesn't result in an error. 🎯

Ready to demystify the NameError: name is not defined in your code? Click to watch the video now 🎬. If it aids you in your coding journey, kindly express your appreciation by hitting the like button 👍, and don't hesitate to enrich our coding community by sharing your questions or insights in the comments section 💬.

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