# unify\_idx

### Description

unify\_idx creates a union of the multi-indexes from the given dataframes and fills in the previous values.

### **Parameters**

* \*args : pandas.DataFrames

### **Returns**

* `list`: A list of pandas.Dataframes with multi-index

### **Example**&#x20;

```python
# df_* is financial unpivot cm
uni_a, uni_b, uni_c = FinHelper.unify_idx(df_a, df_b, df_c)
```
