How to get the list of feature dataset from a FileGDB file using python

[kavyajeetbora]

I want to list down the names of feature dataset.
This is the basic structure of the geodatabase:

Using fiona I am able to get the list of feature classes using:

layers = fiona.listlayers(gdb_filePath)

Can anyone help me to get the list of feature datasets (not feature classes) ?
Using arcpy can be done I guess but don't have it as it needs license. Looking for some solution using opensource libraries like fiona and GDAL, if any

[sgillies]

@kavyajeetbora fiona.listdir is what you're looking for. I'll update the documentation to make that more clear.

Correction: fiona doesn't support multiple datasets within a geodatabase file. The GDAL library has some support since version 3.4 https://gdal.org/drivers/vector/openfilegdb.html#hiearchical-organization but we haven't implemented it for fiona yet. fiona.listdir is only useful for finding datasets within a filesystem directory.

[kavyajeetbora]

Thanks very much @sgillies
I got the list of datasets using this following command (using osgeo.gdal module):
groupList = gdal.OpenEx(gdb_filePath).GetRootGroup().GetGroupNames()

and to get the layers within a particular group:

dataset = gdal.OpenEx(gdb_filePath)
# GroupName from the groupList above
dataset.GetRootGroup().OpenGroup('GroupName').GetVectorLayerNames()