matplotlib funcAnimation won't repeat

Question

I am making a animated bar plot for basic bubble sort. It runs pretty good. But doesn't repeat itself (loop). I am trying it in jupyter notebook, I added %matplotlib qt , Why won't my animFunc repeat although I have set the repeat to True.

x=["1","2","3","4","5","6","7","8","9","10"]
y=[7,8,5,3,1,9,4,2,10,6]
temp=0
def animator_X():
    
    for a in range(len(y)-1):
        for b in range(len(y)-a-1):
            if y[b]>y[b+1]:
                temp = y[b]
                y[b]=y[b+1]
                y[b+1]=temp
                yield y

fig,ax = plt.subplots(figsize=(7,5))

def init():
        ax.clear()
        y=[7,8,5,3,1,9,4,2,10,6]
        plt.bar(x,y,color=['blue'])

def animX(i):
    ax.clear()
    plt.bar(x,y,color=['blue'])
    return plt
    



animx = FuncAnimation(fig,animX,frames=animator_X,interval=1000,init_func=init,repeat=True)

plt.show()

Answer 1

You aren't resetting the global y variable when it repeats the init after a run.

Try:

%matplotlib notebook
import matplotlib.pyplot as plt
import matplotlib.animation as animation
x=["1","2","3","4","5","6","7","8","9","10"]
y=[7,8,5,3,1,9,4,2,10,6]
temp=0
def animator_X():
    
    for a in range(len(y)-1):
        for b in range(len(y)-a-1):
            if y[b]>y[b+1]:
                temp = y[b]
                y[b]=y[b+1]
                y[b+1]=temp
                print(y)
                yield y

fig,ax = plt.subplots(figsize=(7,5))

def init():
    global y
    ax.clear()
    y=[7,8,5,3,1,9,4,2,10,6]
    plt.bar(x,y,color=['blue'])
    return plt

def animX(i):
    ax.clear()
    plt.bar(x,y,color=['blue'])
    return plt
    




animp = animation.FuncAnimation(fig,animX,frames=animator_X,interval=100,init_func=init)
plt.show()

That code will run in sessions launched from here . Go there and press launch binder . When it comes up, you can paste in the code.