您应该注意函数的名称空间。
考虑
a = 0def f(): a = 1f()print(a) # will print 0
因此，您需要处理实际对象，而不是它们的某些本地副本。
import numpy as npimport matplotlib.pyplot as pltimport matplotlib.animation as animationfrom matplotlib.widgets import Slider, Buttonn0 = 100n1 = 1000#Create figure objectfig, ax = plt.subplots(1,1)plt.subplots_adjust(bottom=0.3)#Create Sliders for parametersaxcolor = "skyblue"axlam = plt.axes([0.20, 0.05, 0.20, 0.03], facecolor=axcolor)slam = Slider(axlam, 'Exp lambda', 0, 5, valinit=1)#Default distributionsdexp = [np.random.exponential(1, n1)]##Updates distributions when sliders are changeddef updateDist(val): lam = slam.val dexp[0] = np.random.exponential(lam, n1)slam.on_changed(updateDist)#updates plot on FuncAnimation calldef update(curr): if( curr == (n1-n0) ): a.event.source.stop() ax.clear() bins_exp = np.arange(0,4/slam.val,0.25) ax.hist(dexp[0][:(n0+curr)],bins=bins_exp) ax.set_title('Exp n={}'.format(n0+curr)) fig.canvas.draw_idle()#Define Start button and function to start animationgoax = plt.axes([0.8, 0.025, 0.1, 0.04])button = Button(goax, 'Start', color=axcolor, hovercolor='0.975')a = [0]def start(event): a[0] = animation.FuncAnimation(fig,update,interval=100)button.on_clicked(start)plt.show()
