Matplotlib -Close window without explicit mouseclick

The following code displays the following window:

import numpy as np 
import matplotlib.pylab as pl
import matplotlib.gridspec as gridspec
from matplotlib import pyplot as plt 

def plot_stuff(x,y,z):  
    gs = gridspec.GridSpec(3, 1) 
    plt.style.use('dark_background')
    pl.figure("1D Analysis")
    ax = pl.subplot(gs[0, 0]) 
    ax.set_ylabel('X VALUE')
    pl.plot(x, color="red")
    ax = pl.subplot(gs[1, 0]) 
    ax.set_ylabel('Y VALUE')
    pl.plot(y, color="green")    
    ax = pl.subplot(gs[2, :])
    ax.set_ylabel('Z VALUE')
    pl.plot(z, color="blue")
    plt.show()

How do I close the window without an explicit mouse click?

I need to visualize a LOT of data so I'm searching a way to automating the process of opening and closing windows.

I know that plt.show() is a blocking operation and I've tried using the plt.close("all") method as mentioned in the related questions but the window remains there, does not close and I have to close it manually.

I need a simple code for automating the process of opening a window, visualize the data, closing the window after a certain interval of time; and then repeat the procedure in a for loop fashion.

from Matplotlib -Close window without explicit mouseclick