See the _installation instructions for more detailed requirements, but hopefully things will work by just running the following:
$ pip install pylibftdi
Connect and enumerate FTDI devices
Connect the FTDI device to a free USB port. Run the list_devices example to enumerate connected FTDI devices:
$ python -m pylibftdi.examples.list_devices
For each connected device, this will show manufacturer, model identifier, and serial number. With a single device connected, the output maybe something like the following:
Though hopefully with a different serial number, or else you've either stolen mine, or you are me...
Test some actual IO (well, at least O)
Connect an LED between D0 of your bit-bang capable device and ground, via a 330 - 1K ohm resistor as appropriate.
Test the installation and functioning of pylibftdi with the following:
$ python -m pylibftdi.examples.led_flash
The LED should now flash at approximately 1Hz.