Install iolink from PyPI using pip:
$ python -m pip install iolink
This makes sure that the pip you are using belongs to your Python distribution. But you may also do it with:
$ pip install iolink
Download the iqDLL (iqcomm.dll) from the IQ2 website.
Make the iqDLL available to iolink by copying the iqcomm.dll file:
to the same directory where your main Python file resides, or by
copying the file to a known location in your system and adding this directory to the PATH environment variable.