Finding the PSSE API documentation

Help Topics is a PDF of the documentation for PSSE.

This is the "PSSE API" documentation. You'll find a huge list of the available functions in here.

We want to use the FNSL command, so search for FNSL inside the document and click the link.

We're interested in Python, so you can read the "Python syntax".

If at the top of the file you've typed:

import psspy

then to use fnsl you'll need to type

psspy.fnsl()

not simply

fnsl()

Like it is shown in the documentation! I personally prefer to type psspy.fnsl - because then it is obvious which library the 'fnsl' function came from.