Python Matplotlib-返回数组必须为ArrayType

我有一个语法

import matplotlib.pyplot as plt
import numpy as  np

labels = ['2009-2015', '2016-2018', '2019-2021']
European = [92.55, 83.57, 82.52]
Asian = [5.96, 8.55, 10.68]
African = [1.49, 1.89, 6.37]
Other = [0, 5.99, 0.43]

b_African = list(np.add(European,Asian))
b_Other = list(np.add(European,Asian,African))

width = 0.35

fig, ax = plt.subplots()

ax.bar(labels, European, width, label='European')
ax.bar(labels, Asian, width, bottom=European,label='Asian')
ax.bar(labels, African, width, bottom=b_African,label='African')
ax.bar(labels, Other, width, bottom=b_African,label='Other')

TypeError回溯（最近一次调用）
在里面
10
11 b_非洲人=名单（np.add（欧洲、亚洲））
--->12 b_其他=列表（np.add（欧洲、亚洲、非洲））
13
14宽度=0.35
TypeError:返回数组必须为ArrayType

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有人知道如何修复它吗？

这个答案遵循评论中的建议。 您想添加相同类型的数组

TypeError                                 Traceback (most recent call last)
<ipython-input-6-5cfdb21f17d8> in <module>
     10 
     11 b_African = list(np.add(European,Asian))
---> 12 b_Other = list(np.add(European, Asian,African))
     13 
     14 width = 0.35

TypeError: return arrays must be of ArrayType

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添加两个相同形式的数组是np.add（），因此我认为下面的方法是可行的。　

b_Other=list（np.add（np.add（欧洲、亚洲、非洲））

import matplotlib.pyplot as plt
import numpy as  np

labels = ['2009-2015', '2016-2018', '2019-2021']
European = [92.55, 83.57, 82.52]
Asian = [5.96, 8.55, 10.68]
African = [1.49, 1.89, 6.37]
Other = [0, 5.99, 0.43]

b_African = list(np.add(European,Asian))
# This is the trick:
b_Other = list(np.add(np.add(European,Asian),African))

width = 0.35

fig, ax = plt.subplots()

ax.bar(labels, European, width, label='European');
ax.bar(labels, Asian, width, bottom=European,label='Asian');
ax.bar(labels, African, width, bottom=b_African,label='African');
ax.bar(labels, Other, width, bottom=b_African,label='Other');

plt.show()