Hello,
I'm triing python arcgis sdk and I did:
```bash
pip install arcgis
```
And then
```python
from arcgis.gis import GIS
from arcgis.features import GeoAccessor, GeoSeriesAccessor
```
And I get
```
Traceback (most recent call last):
File "/usr/local/lib/python3.5/site-packages/IPython/core/interactiveshell.py", line 3325, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-4-876ff2e6ffd8>", line 2, in <module>
from arcgis.features import GeoAccessor, GeoSeriesAccessor
File "/usr/local/lib/python3.5/site-packages/arcgis/__init__.py", line 3, in <module>
from . import (features, geoanalytics, geocoding, geometry,
File "/usr/local/lib/python3.5/site-packages/arcgis/features/__init__.py", line 22, in <module>
from .layer import FeatureLayer, Table, FeatureLayerCollection
File "/usr/local/lib/python3.5/site-packages/arcgis/features/layer.py", line 254
attachment_path = os.path.join(path, f'{md5_hash}.jpg')
^
SyntaxError: invalid syntax
```
What is going on?