## splits.train_test_split()


Create a single train/test split.


Usage

``` python
splits.train_test_split(
    data,
    horizon,
    min_train=365 * 2,
    test_end=None,
)
```


## Parameters


`data: pd.DataFrame`  
Data containing a `ds` column.

`horizon: int`  
Number of daily observations in the test set.

`min_train: int = 365 * 2`  
Minimum number of days to include in training sample. By default, set to 2 years as that allows detection of yearly seasonality.

`test_end: pd.Timestamp | None = None`  
Final date in the test set. If None, uses the latest date in the data.


## Returns


`train, test : tuple[pd.DataFrame, pd.DataFrame]`  
Training and test data.