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df.isin()
AI & DATA SCIENCE // df-isin
Whether each element in the DataFrame is contained in values.
Syntax
res = df[df['A'].isin([1, 2, 3])]Examples
Example 01Basic Usage
res = df[df['A'].isin([1, 2, 3])]Best Practices
- Use vectorized operations over iterations (e.g.
iterrows()) for performance. - Always verify memory usage when loading large files.