pushtogether-math can be installed using pip:
$ python -m pip install pushtogether-math
This command will fetch the archive and its dependencies from the internet and install them.
If you've downloaded the tarball, unpack it, and execute:
$ python setup.py install --user
You might prefer to install it as system-wide. In this case, skip the --user
option and execute as superuser by prepending the command with sudo.
Windows users may find that these command will only works if typed from Python's installation directory.
Some Linux distributions (e.g. Ubuntu) install Python without installing pip.
Please install it before. If you don't have root privileges, download the
get-pip.py script at https://bootstrap.pypa.io/get-pip.py and execute it as
python get-pip.py --user.