Python NLTK: fdist.plot错误

Question

我正在尝试绘制文本文件中前50个单词的频率图，但这是我得到的错误消息。

s-10', 'logan', 'jacksonville', 'brokerage', 'brickman', 'mount', 'wireless', 'p
hillips', 'advisor', 'okavango', 'portfolio', 'sill', 'weddings', 'share', 'para
legal']

>>> fdist1.plot(50)

Traceback (most recent call last):
File "C:\Python34\lib\site-packages\nltk\probability.py", line 229, in plot
import pylab
ImportError: No module named 'pylab'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python34\lib\site-packages\nltk\probability.py", line 231, in plot
raise ValueError('The plot function requires the matplotlib package (aka pyl
ab). '
ValueError: The plot function requires the matplotlib package (aka pylab). See h
ttp://matplotlib.sourceforge.net/

我的教授的示例代码没有提到任何关于导入pylab包的内容。我试着下载它，但它似乎仍然不能工作。

感谢您的帮助:)谢谢

Answer 1

绘制分布需要matplotlib。

请参阅FreqDist.plot()的相关行

try:
    from matplotlib import pylab   
except ImportError:
    raise ValueError('The plot function requires matplotlib to be installed.'
                     'See http://matplotlib.org/')