How to fix KeyError: 'None of [[x, y]] are in the [columns]' in Python

Hello, Dedicated Coders! 🖥️💡

We're excited to share with you our newest video, "How to solve KeyError: 'None of [[x, y]] are in the [columns]' 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 KeyError: 'None of [[x, y]] are in the [columns]'. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

import pandas as pd
df = pd.DataFrame({'a': [1, 2], 'b': [3, 4]})
df[['x', 'y']]

Unwanted Result: 🚫
KeyError: 'None of [[x, y]] are in the [columns]'

Effective Resolution: ✔️

import pandas as pd
df = pd.DataFrame({'a': [1, 2], 'b': [3, 4]})
df[['a', 'b']]

Desired Output: 🏁

a b
0 1 3
1 2 4

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: In Code1, the error occurs because columns 'x' and 'y' do not exist in DataFrame. To correct it, reference existing columns, like 'a' and 'b', as shown in Code2. 🎯

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