Extracting waveforms but not sure how to get cluster ID

[Coglet00]

import sys
import matplotlib.pyplot as plt
from phylib.io.model import load_model
from phylib.utils.color import selected_cluster_color

First, we load the TemplateModel.

model = load_model(sys.argv[1]) # first argument: path to params.py

We obtain the cluster id from the command-line arguments.

cluster_id = int(sys.argv[2]) # second argument: cluster index

We get the waveforms of the cluster.

waveforms = model.get_cluster_spike_waveforms(cluster_id)
n_spikes, n_samples, n_channels_loc = waveforms.shape

We get the channel ids where the waveforms are located.

channel_ids = model.get_cluster_channels(cluster_id)

We plot the waveforms on the first four channels.

f, axes = plt.subplots(1, min(4, n_channels_loc), sharey=True)
for ch in range(min(4, n_channels_loc)):
axes[ch].plot(waveforms[::100, :, ch].T, c=selected_cluster_color(0, .05))
axes[ch].set_title("channel %d" % channel_ids[ch])
plt.show()

this is the code given in (https://phy.readthedocs.io/en/latest/visualization/)

i am getting an assertion error while writing the cluster ID . it shd be an integer. Its also said it can be obtained using command line arguments.. i am struggling to find which argument is this?

Thanks in advance