Snippets tagged “boolean-mask”
2 snippets use this tag.
- How do I count the NaN values in a column in pandas DataFrame?Python
You can use the isna() function to create a boolean mask of the NaN values in a column, and then use the sum() function to count the number of True values in the mask.
- Python Pandas: Get index of rows where column matches certain valuePython
You can use the .loc method to filter the DataFrame and get the boolean mask, and then use the .index property to get the index of the rows that match the certain value.