Oh, glad you got it working!
As another suggestion, consider handling your exceptions a more specific, targeted manner. With your snippet, you will never know if there was some other problem with updateConnectionProperties() because you're printing a generic message for all exceptions. You need to know if something unexpected is happening, which your error handling will not show. I've started doing this as a pattern to add more information/context to errors.
import arcpy
aprx = arcpy.mp.ArcGISProject("CURRENT")
for m in aprx.listMaps("Mobile_Map"):
for lyr in m.listLayers():
if lyr.supports("connectionProperties"):
try:
print(lyr.connectionProperties["connection_info"])
lyr_update = lyr.connectionProperties
lyr_update['connection_info']['password']='<password>'
lyr_update['connection_info']['user']='dr'
lyr.updateConnectionProperties(lyr.connectionProperties, lyr_update)
except Exception as e:
raise Exception("Not an sde database or the database connection does not need to be updated.") from e
aprx.save()
del aprx
If you really want to pass on some specific error, you can handle that specifically. In this example, all arcpy errors will get passed and the code will continue running, but it will stop if the exception is not from arcpy (unhandled).
except arcpy.ExecuteError as arcpy_e:
print(arcpy_e)
print("Not an sde database or the database connection does not need to be updated.")
pass
