How to "Set Data Source" for a layer using arcpy?

[uasdev]

Hi all,

I am trying to Set Data Source... using arcpy. This is required for my project, as I need to loop through many layers/project files.

Here is a simplified example of my code:

```

import arcpy, os

layerName = 'Site'

# old data source

# old_data_source = r'C:\path\to\Old.gdb\RealEstate\Site'

# new data source

new_data_source = r'C:\path\to\New.gdb\RealEstate\Site'

aprx = arcpy.mp.ArcGISProject(r'Current')

for m in aprx.listMaps():

    for lyr in m.listLayers():

        if lyr.supports("DATASOURCE"):

            if lyr.longName == layerName:

                lyr.updateConnectionProperties(lyr.dataSource, new_data_source)

```

I have seen in other posts to use connectionProperties of the lyr. But this requires alot of fine tuning to deal with different types of files (from geodatabase, to shapefile, to kml files).

Is there a simple way to Set Data Source using arcpy, as one would do simply using the GUI:

[GeeteshSingh07]

@uasdev I haven't personally done this but a long time back someone suggested me this course: https://www.esri.com/training/catalog/6361614a4b223839523bc32b/python-scripting-repairing-data-sourc...

Maybe this helps?