Python : Add point to the plot on every user input [duplicate]

Question

I have a created a circle using the matplotlib library. Now in an infinite loop on every user input of x and y, I want to plot the point on the graph. How can I do this withour replotting everything again on user input?

This is what I have tried but this is not working

import numpy as np 
import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['toolbar'] = 'None'

fig = plt.figure()
angle = np.linspace( 0 , 2 * np.pi , 1500 ) 
 
radius = 5
 
figure, axes = plt.subplots( 1 ) 

plt.title( 'Ring' )  
plt.box(False)
plt.axis('off')

while True:
    x = radius * np.cos( angle ) 
    y = radius * np.sin( angle ) 
    axes.plot( x, y ) 
    axes.set_aspect( 1 ) 
    # this is the part which I need to update without actually replotting my plot again
    i_line = input("Enter the points ").split()
    i_x, i_y = int(i_line[0]), int(i_line[1])
    plt.scatter(i_x, i_y, color='red')
    plt.show()

Answer 1

You can do it with conditional aggregation:

SELECT customer_id,
       SUM(CASE WHEN blocked IS NULL AND unapproved IS NULL THEN cost ELSE 0 END) total
FROM tablename
GROUP BY customer_id;

Or:

SELECT customer_id,
       SUM(CASE WHEN COALESCE(locked, unapproved) IS NULL THEN cost ELSE 0 END) total
FROM tablename
GROUP BY customer_id;