Question

在Jupyter笔记本上运行代码时，遇到了此错误。我安装了matplotlib和pandas。有谁知道这可能是什么？代码：

def average_words(x):
   words = x.split()
   return sum(len(word) for words in word) / len(words)
df['average_word_length'] = df['review'].apply(lambda x: average_words(x))
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-102-bbc583af9f13> in <module>
----> 1 df['average_word_length'] = df['review'].apply(lambda x: average_words(x))

/opt/anaconda3/envs/py36/lib/python3.6/site-packages/pandas/core/series.py in apply(self, func, convert_dtype, args, **kwds)
   3846             else:
   3847                 values = self.astype(object).values
-> 3848                 mapped = lib.map_infer(values, f, convert=convert_dtype)
   3849 
   3850         if len(mapped) and isinstance(mapped[0], Series):

pandas/_libs/lib.pyx in pandas._libs.lib.map_infer()

<ipython-input-102-bbc583af9f13> in <lambda>(x)
----> 1 df['average_word_length'] = df['review'].apply(lambda x: average_words(x))

<ipython-input-96-4f4dfe065b11> in average_words(x)
      1 def average_words(x):
      2    words = x.split()
----> 3    return sum(len(word) for words in word) / len(words)

NameError: name 'word' is not defined

要清楚，我正在尝试从Yelp的网站进行网页搜刮

Answer 1

问题：

NameError：未定义名称“ word”。您正在尝试访问单词，但单词显然未定义。

可能的解决方案：

我认为正确的return语句是这样的：

return sum(len(word) for word in words) / len(words)

（我在for word in words中切换了单词和单词，因为我认为单词是数组而不是单词）

Yelp网站报废

1 个答案: