# Another way to do it without clearing the Axis

from itertools import count

import pandas as pd

import matplotlib.pyplot as plt

from matplotlib.animation import FuncAnimation

plt.style.use('fivethirtyeight')

x_vals = []

y_vals = []

plt.plot([], [], label='Channel 1')

plt.plot([], [], label='Channel 2')

def animate(i):

data = pd.read_csv('data.csv')

x = data['x_value']

y1 = data['total_1']

y2 = data['total_2']

ax = plt.gca()

line1, line2 = ax.lines

line1.set_data(x, y1)

line2.set_data(x, y2)

ax = plt.gca()

xlim_low, xlim_high = ax.get_xlim()

ylim_low, ylim_high = ax.get_ylim()

current_ymin = y1min if (y1min < y2min) else y2min

ax.set_ylim((current_ymin - 5), (current_ymax + 5))

ani = FuncAnimation(plt.gcf(), animate, interval=1000)

plt.legend()

plt.tight_layout()

plt.show()