[Python] Installing hyperledger indy node code fails on python3 not being default on Mac

I am installing Hyperledger Indy (sovrin) self-identity software per these instructions.

I have Python2.7 installed via Anaconda 3. I also have Python3.6.3 installed that I downloaded and installed from here.

I'm trying to install some other software that has a dependency for Python > 3.5.

I've tried several methods to change my default Python:

1. 
   Per this SO I set it manual in current terminal window:
   
   alias python='python3'
   
   
2. 
   Per same SO I vi .bash_profile and added:
   
   alias python='python3'
   

then source ~/.bash_profile

1. Set a link to Python3:

bc-computer:~ momi$ unlink /usr/local/bin/python2 bc-computer:~ momi$ ln -s /usr/local/bin/python3 /usr/local/bin/python

but still continue to get the same error:

bc-computer:~ momi$ pip install indy-node-dev
Collecting indy-node-dev
Using cached indy-node-dev-1.2.227.tar.gz
Complete output from command python setup.py egg_info:
FAIL: Requires Python 3.5 or later, but setup.py was run using 2.7.14
NOTE: Installation failed. Run setup.py using python3

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/3f/sh6dr8wx6w720b1_w38f_fh00000gq/T/pip-build-ecZnYY/indy-node-dev/


I also tried setting up a python3 test environment per this:

python3 setup.py test


And got this error:

> /usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/Resources/Python.app/Contents/MacOS/Python:
> can't open file 'setup.py': [Errno 2] No such file or directory


Please note that I tried this suggestion which seems to be the non-duplicate answer but didn't work for me:

The safest way is to set an alias in ~/.bashrc:

alias python=python3
​

My environment:

uname -msra
Darwin bc-computer.local 17.2.0 Darwin Kernel Version 17.2.0: Fri Sep 29 18:27:05 PDT 2017; root:xnu-4570.20.62~3/RELEASE_X86_64 x86_64


My OS: High Sierra 10.13.1

which -a python
/Users/momi/anaconda2/bin/python
/usr/local/bin/python
/usr/bin/python


Thank you

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