Error de atributo: el objeto ‘BarContainer’ no tiene el atributo ‘get_height’

Necesito dividir el eje y del código “yaxis” del MWE a continuación en el rango [40, 90]:

import numpy as np
import matplotlib.pyplot as plt

n = 2
ind = np.arange(n)
width = 0.45

fig = plt.figure()
ax = fig.add_subplot(111)

yvals = [10, 20]
rects1 = ax.bar(ind, yvals, width, color=’r’)
zvals = [15,35]
rects2 = ax.bar(ind+width, zvals, width, color=’g’)

ax.set_ylim([0, 100])

ax.set_ylabel(‘Y’)
ax.set_xlabel(‘X’)
ax.set_xticks(ind+width/2)

ax.set_xticklabels((‘A’, ‘B’))
ax.legend((rects1[0], rects2[0]), (‘M’, ‘N’))

def autolabel(rects):
for rect in rects:
h = rect.get_height()
ax.text(rect.get_x()+rect.get_width()/2., 1.05*h, ‘{}’.format(int(h)),
ha=’center’, va=’bottom’)

autolabel(rects1)
autolabel(rects2)

plt.show()

Entonces, usando el módulo “Brokenaxes”, intenté lo siguiente:

import numpy as np
import matplotlib.pyplot as plt
from brokenaxes import brokenaxes

N = 2
ind = np.arange(N)
width = 0.45

fig = plt.figure()

baxes = brokenaxes(ylims=((0, 40), (90, 100)), hspace=.05)

yvals = [10, 20]
rects1 = baxes.bar(ind, yvals, width, color=’r’)
zvals = [15, 35]
rects2 = baxes.bar(ind+width, zvals, width, color=’g’)

baxes.set_ylim([0, 100])

baxes.set_ylabel(‘Y’)
baxes.set_xlabel(‘X’)
baxes.set_xticks(ind+width/2)

baxes.set_xticklabels((‘A’, ‘B’))
baxes.legend((rects1[0], rects2[0]), (‘M’, ‘N’))

def autolabel(rects):
for rect in rects:
h = rect.get_height()
baxes.text(rect.get_x()+rect.get_width()/2., 1.05*h, ‘{}’.format(int(h)),
ha=’center’, va=’bottom’)

autolabel(rects1)
autolabel(rects2)

plt.show()

Pero arroja:

AttributeError: El objeto ‘BarContainer’ no tiene el atributo ‘get_height’

¿Cómo se puede resolver este problema?