AttributeError: 'DatasetDict' object has no attribute 'train_test_split'
Hi @david-waterworth!

As indicated in the error message, `load_dataset("csv")` returns a `DatasetDict` object, which is mapping of `str` to `Dataset` objects. I believe in this case the behavior is to return a `train` split with all the data.
`train_test_split` is a method of the `Dataset` object, so you will need to do something like this:
```python
dataset_dict = load_dataset(`'csv', data_files='data.txt')
dataset = dataset_dict['split name, eg train']
dataset.train_test_split(test_size=0.1)
```

Please let me know if this helps. 🙂  Thanks, that's working - the same issue also tripped me up with training. 

I also agree https://github.com/huggingface/datasets/issues/767 would be a useful addition.  Closing this now > ```python
> dataset_dict = load_dataset(`'csv', data_files='data.txt')
> dataset = dataset_dict['split name, eg train']
> dataset.train_test_split(test_size=0.1)
> ```

I am getting error like
KeyError: 'split name, eg train'
Could you please tell me how to solve this? dataset = load_dataset('csv', data_files=['files/datasets/dataset.csv'])
dataset = dataset['train']
dataset = dataset.train_test_split(test_size=0.1)
The following code fails with "'DatasetDict' object has no attribute 'train_test_split'" - am I doing something wrong?
```
from datasets import load_dataset
dataset = load_dataset('csv', data_files='data.txt')
dataset = dataset.train_test_split(test_size=0.1)
```

> AttributeError: 'DatasetDict' object has no attribute 'train_test_split'