Arcpy ListDatasets function to specific directories instead of workspace [duplicate]

Question

Are there any alternatives to the arcpy list functions (ListDatasets, etc.) where the directory can be specified rather than using the env.workspace?

For example, what if I would like to get a list of datasets in several different directories?

Or if I have my workspace in_memory?

The os.walk might partially work, but won't recognize non-file-based data types. Is another function or snippets that can accomplish this?

Answer 1

The function that I think may work for you is arcpy.da.Walk()

This works in a similar way to os.walk() but can walk through geodatabases as well as folders, and recognises spatial data types, tables, feature classes as well as files.

Code sample from the Walk documentation:

import arcpy
import os

workspace = "c:/data"
feature_classes = []

walk = arcpy.da.Walk(workspace, datatype="FeatureClass", type="Polygon")

for dirpath, dirnames, filenames in walk:
    for filename in filenames:
        feature_classes.append(os.path.join(dirpath, filename))