Pandas DataFrame: unstack() function
DataFrame - unstack() function
Pivot a level of the (necessarily hierarchical) index labels, returning a DataFrame having a new level of column labels whose inner-most level consists of the pivoted index labels.
If the index is not a MultiIndex, the output will be a Series (the analogue of stack when the columns are not a MultiIndex).
Syntax:
DataFrame.unstack(self, level=-1, fill_value=None)
Parameters:
| Name | Description | Type/Default Value | Required / Optional |
|---|---|---|---|
| level | Level(s) of index to unstack, can pass level name | int, string, or list of these(last level) Default Value: 1 |
Required |
| fill_value | missing values | replace NaN with this value if the unstack produces | Required |
Returns: Series or DataFrame
Example:
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