This code depends on PyVISA and NumPy. Both can be installed using pip. You will also need a backend for PyVISA; see its documentation for how to install one.
The first argument to each public function must be a PyVISA resource instance. For example:
import pyvisa
rm = pyvisa.ResourceManager()
# Grabs the first instrument of any kind. If your scope is connected via USB, this probably works
rigol = rm.open_resource(rm.list_resources()[0])
import ds2102a
# reads the current waveform on the screen for channel 1 without stopping the scope
# returns a numpy.ndarray of floating point voltages
# (note the raw output of the scope is unsigned 8b values that we normalize to voltages)
y_vals = ds2102a.read_normal(rigol)If you want to use time values (i.e. seconds) instead of point indices for your X-values, the last_x_values function outputs the offset of each sample from the trigger in integer picoseconds.