Hi Mody,
I think the ESRI-documentation on this topic is not enough. I have installed pro and 10.3 on the same machine as well. When I try to run my old arcpy-scripts (there are several, made on python 2.7 and arcpy 10.2 32bit) in IDLE, then
nothing runs, because IDLE is looking on python 3.4 and arcpy 10.3. When I run the scripts within ArcGIS 10.3 Desktop it works, because ArcGIS 10.3 Desktop takes the 2.7 python library and the old arcpy 32 bit library.
Of course I would like to use IDLE as I did before. When I migrate one of the old scripts to arcpy 64 (2to3) and correct all the new classnames and so on, then I get
RuntimeError: Not signed into Portal.
So like in ArcGISPro I have to sign into arcgis-online or my own portal (if available) wiht my named user.
I would do this, if I knew how ...
Any ideas?
Or is the ESRI strategy to do all scripting within ArcGIS desktop or ArcGIS pro ...?
Then they should let us know ...
or tell us how to switch the IDLE-IDE to pyhon 2.7 ...
Best regards from Berlin,
Christoph