I am writing because I am having trouble installing Pyomo using pip on Python 3.6 on Mac OSX 10.14
I'm following the installation instructions here.
I can successfully execute the first command:
pip install pyomo
But when I run into trouble when I'm supposed to run the following command to install additional dependencies:
pyomo install-extras
Running this command produces the following error:
Traceback (most recent call last):
File "/usr/local/bin/pyomo", line 11, in <module>
sys.exit(main())
File "/usr/local/lib/python3.6/site-packages/pyomo/scripting/pyomo_main.py", line 82, in main
retval = _options.func(_options)
File "/usr/local/lib/python3.6/site-packages/pyomo/scripting/driver_help.py", line 46, in install_extras_exec
pyutilib.subprocess.run(command, tee=True)
File "/usr/local/lib/python3.6/site-packages/pyutilib/subprocess/processmngr.py", line 690, in run_command
th.join()
UnboundLocalError: local variable 'th' referenced before assignment
There is a post about this here on Google Groups but no solution yet.
This is a documented issue on the github for Pyomo: https://github.com/Pyomo/pyomo/issues/243
They don't appear to have solved the pip installation of pyomo extras.
However, if you have conda installed - https://docs.conda.io/en/latest/
You should be able to use the terminal commands from:
https://pyomo.readthedocs.io/en/latest/installation.html
run this in terminal after conda has been successfully installed:
conda install -c conda-forge pyomo.extras
I know this isn't pip, but it's at least a workaround until pyomo fixes their documentation.