Python script to sweep the voltage on a Keithley SMU, and plot Current vs. Voltage.
Requires pyVISA: https://pyvisa.readthedocs.io/
Sweep parameters are at the top. Option to save plots and data files.
-- Demis D. John, Univ. of California Santa Barbara / nanotech.ucsb.edu -- Based off Steve Nichols' script from 2010, Univ. of California Santa Barbara