python pandas get unique values from multiple columns

Title: Extracting Unique Values from Multiple Columns in Python Pandas
Introduction:
Python Pandas is a powerful library for data manipulation and analysis, and it offers a convenient way to extract unique values from multiple columns in a DataFrame. In this tutorial, we will explore different methods to achieve this task with practical code examples.
Choose the method that best suits your specific use case. Each method has its own advantages, and the choice may depend on factors such as performance, readability, and personal preference.
Conclusion:
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