Python 如何在水平条形图中绘制计数器对象？

我有一个反对的对象。我想画一个这样的水平条形图

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如何才能做到这一点？

这是您提到的页面中的示例，该页面已修改为使用计数器对象：

 """
Simple demo of a horizontal bar chart.
"""
import matplotlib.pyplot as plt; plt.rcdefaults()
import numpy as np
import matplotlib.pyplot as plt


# Counter data, counter is your counter object
keys = counter.keys()
y_pos = np.arange(len(keys))
# get the counts for each key, assuming the values are numerical
performance = [counter[k] for k in keys]
# not sure if you want this :S
error = np.random.rand(len(keys))

plt.barh(y_pos, performance, xerr=error, align='center', alpha=0.4)
plt.yticks(y_pos, keys)
plt.xlabel('Counts per key')
plt.title('How fast do you want to go today?')

plt.show()

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如果要按值对键进行排序，该怎么办？