我试图在Python中创建一个我想要的形状的wordcloud，使用一个字数作为值的字典。为此我正在从网上读取一个图像。图像正确存储在变量中，但wordcloud未被渲染。但是使用默认形状，wordcloud会显示出来。以下是我的代码：
from PIL import Image
import urllib
import requests
img=Image.open(requests.get('https://internationalcriminallaw.files.wordpress.com/2013/04/terrorism.png', stream=True).raw)
motive=terror['Motive'].str.lower().str.replace(r'\|', ' ').str.cat(sep=' ')
words=nltk.tokenize.word_tokenize(motive)
word_dist = nltk.FreqDist(words)
stopwords = nltk.corpus.stopwords.words('english')
words_except_stop_dist = nltk.FreqDist(w for w in words if w not in stopwords)
mask1=img
wordcloud = WordCloud(
stopwords=STOPWORDS,
background_color='white',
mask=mask1,
max_font_size=40
)
wordcloud.generate(" ".join(words_except_stop_dist))
plt.imshow(wordcloud)
plt.axis('off')
plt.show()
以下是错误：
AttributeError Traceback (most recent call last)
<ipython-input-147-6aabda55c848> in <module>()
6 max_font_size=40
7 )
----> 8 wordcloud.generate(" ".join(words_except_stop_dist))
9 plt.imshow(wordcloud)
10 plt.axis('off')
/home/austin/anaconda3/lib/python3.5/site-packages/wordcloud/wordcloud.py in generate(self, text)
448 self
449 """
--> 450 return self.generate_from_text(text)
451
452 def _check_generated(self):
/home/austin/anaconda3/lib/python3.5/site-packages/wordcloud/wordcloud.py in generate_from_text(self, text)
434 """
435 words = self.process_text(text)
--> 436 self.generate_from_frequencies(words)
437 return self
438
/home/austin/anaconda3/lib/python3.5/site-packages/wordcloud/wordcloud.py in generate_from_frequencies(self, frequencies)
281 if self.mask is not None:
282 mask = self.mask
--> 283 width = mask.shape[1]
284 height = mask.shape[0]
285 if mask.dtype.kind == 'f':
/home/austin/anaconda3/lib/python3.5/site-packages/PIL/Image.py in __getattr__(self, name)
625 new['version'] = 3
626 return new
--> 627 raise AttributeError(name)
628
629 def __getstate__(self):
AttributeError: shape
我该怎么办？