## pricing.fit_pml_curve()


The model through the points of a PML curve: `amounts[j]` is


Usage


``` python
pricing.fit_pml_curve(
    return_periods,
    amounts,
    tail_alpha=2.0,
    truncation=None,
)
```


exceeded once in `return_periods[j]` years.


## Parameters


`return_periods: list of float`  

`amounts: list of float`  

`tail_alpha: float = ``2.0`  
Alpha above the largest amount.

`truncation: float = None`  
Truncation of the last piece.


## Returns


`TowerModel`