In [47]:

    

import matplotlib.pyplot as plt
from matplotlib.widgets import Slider
import numpy as np


#plt.subplots_adjust(bottom=0.25) 

x = np.linspace(0, 20, 1000)
p1 = np.sin(x)
p2 = np.cos(x)
p3 = np.cos(x)



ax1 = plt.subplot(311)
ax2 = plt.subplot(312)
ax3 = plt.subplot(313)


plt.subplots_adjust(bottom=0.25)

ax1.plot(x, p1)
ax2.plot(x, p2)
ax3.plot(x, p3)
ax = [ax1, ax2, ax3]

for a in ax:
    a.axis([0, 4, -1, 1])
    plt.xlabel('x')

axcolor = 'lightgoldenrodyellow'
axpos = plt.axes([0.2, 0.1, 0.65, 0.03], facecolor=axcolor) 
spos = Slider(axpos, 'Time slider', x[0], x[-1])
def update(val): 
    pos = spos.val 
    ax.axis([pos, pos+5, 0, 0.5]) 
    fig.canvas.draw_idle() 
spos.on_changed(update) 

plt.show()


    

In [59]:

    

import queue

g = queue.Queue(maxsize=0)
g.put(5)
g.put([1, 2, 3])
g.put(4)
print(g.queue[0])
g.put(4)
print(g.queue[0])
print(g.get())
print(g.get())
print(g.queue)


    

    




5
5
5
[1, 2, 3]
deque([4, 4])