Shaun Walbridge Thanks for the info on BUG-000103143. Because I figured out that something was wrong with the shortcut, that was why I installed the Anaconda process.
Bidhyananda Yadav The step I was messing up in BOTH the Anaconda and the Pro install was trying to run the
conda install -c esri arcgis
from the wrong location. (I has used the "Python Package Install" In Pro, and it appeared to work, but needed this step). I kept trying to run the command within the "jupyter notebook" or as Shaun pointed out, from the Pro Python interpreter prompt, which I was incorrectly calling the Pro Python command prompt. Once I ran it from the correct locations, the notebook worked as expected.
In short, for others that see this...
If installing using Pro (and not anaconda), (I think you stil need to install the arcgis python api package from within Pro first):
open Start->All Programs->ArcGIS->ArcGIS Pro->Python Command Prompt (
you may want to open "As Administrator", although I didn't need to
run the install command above (should only need to do once).
once the install finishes, in the same window, test if it worked by typing "jupyter notebook" at the prompt and give it time to open in a browser.
To further test, in the Jupyter Notebook that opens, type the line below and run (there is a button in the toolbar) to make sure you do not get an error.
from arcgis.gis import GIS
If all that works, it is good to go and I suggest trying some of the samples.
Because it seems to open in the folder that you start the session, you may want to change that location with "cd \<path>" before starting the notebook, and eventually work with a copy of the shortcut for the Python Command Prompt to make it easier.
To close, it seems you just have to close the tab in the browser, and then the command prompt (if anyone sees a smoother process, I'm interested)
For the Andaconda, external install, I follwed the instructions to download and install Anaconda, and like the above, I was using the wrong command prompt. Instructions are the same as above, except the command prompt for me is:
Start->All Programs->Anaconda3 (64-bit)->Anaconda Prompt
Sample, using the Anaconda Prompt (Other prompt is similar)...I had already installed
I think if I have used the correct "ArcGIS Pro -> Python Command Prompt" (not the Python Interpreter within Pro) to do the "conda install -c esri arcgis" and to open the Jupyter Notebook, I think all would have worked fine without installing the Anaconda version. It does run the notebook in the browser, i.e. external to Pro, so if I was to start over (which I will on another machine), I would start with just that process to see if it all works.
Hopefully this works for you too. I see lots of potential in the Python API.
BTW - I think the Install and set up | ArcGIS for Developers needs to be a little more specific re: the proper "Command prompt" ....with the paths and/or a pic, like I have above. That would have saved me a lot of time (and was quickly pointed out by tech support this morning!)
EDIT: additional note. When I used the Pro ->Python -> Add Packages and install the "arcgis" for the first time, it still installed the 0.3 beta version (3/14/2017). I didn't notice that it was in the "Update Packages" list for a couple hours. You should make sure to update it there tot he 1.0.1 (or above) version if yours loads the beta.