first time use plot - I get empty graph

[deanhystad]

If you want your plot to update as points are added, use animation.

https://matplotlib.org/stable/api/animation_api.html

If you just want to make a plot, stop adding points in a loop. Make a list of points, and plot the list.

import matplotlib.pyplot as plt
import math

def get_data(t):
    return [math.sin(math.radians(deg)) for deg in range(t)]

plt.plot(get_data(360))
plt.show()