does not use python3 when both python2 & 3 are installed

[jacob robbins]

I have python 3.7 installed. I am using a mac. The default installation of python 3 for mac users leaves python 2 installed because python 3 is not backwards compatible: https://stackoverflow.com/questions/5846167/how-to-change-default-python-version

However rma does not look for the python 3 libraries it needs, instead it uses the default ones and fails as follows:

rma --help
Traceback (most recent call last):
  File "/usr/local/bin/rma", line 6, in <module>
    from rma.cli.rma_cli import main
  File "/usr/local/lib/python2.7/site-packages/rma/__init__.py", line 1, in <module>
    from rma.application import RmaApplication
  File "/usr/local/lib/python2.7/site-packages/rma/application.py", line 145
    self.reporter.print(str_res)
                      ^
SyntaxError: invalid syntax

I do not use python regularly as a programming language, so I am unfamiliar with how the python community typically resolves this issue. I am trying to use rma because it provides a unique feature set. It would be helpful if rma either did the right thing in this situation or there was a paragraph in the README explaining how to resolve this.

[Bernard Wiesner]

Make sure you used pip3 to install rma. You may need to do sudo pip uninstall rma, and then sudo pip3 install rma.

[jacob robbins]

ok that resolved the issue, closing this. to be precise, switching from python virtualenv to pyenv for managing multiple python versions resolved the issue.