Question

我有一个由字符串组成的（61000L，2L）numpy.ndarray。在中，numpy.ndarray中的项目是字符串。

我拆分字符串，以便在numpy.ndarray中输出字符串中的每个单词作为列表，并使用以下代码：

words_data = np.char.split(string_data)

我尝试制作一个双重for循环，用于计算每个列表中找到的唯一单词。

from collections import Counter
counts = Counter()
for i in range(words_data.shape[0]):
    for j in range(words_data[1]):
        counts.update(words_data[i])

counts

上述代码的输出错误如下：

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-39-680a0105eebd> in <module>()
      1 counts = Counter()
      2 for i in range(words_data.shape[0]):
----> 3     for j in range(words_data[1]):
      4         counts.update(words_data[i])
      5 

TypeError: only size-1 arrays can be converted to Python scalar

以下是我的数据的前8行：

 x = np.array([["hello my name is nick", "hello my name is Nick", "hello my name is Carly", "hello my name is Ashley, "hello my name is Java", "hello my name is C++", "hello my name is Ruby", "hello my name is Python"" ],["hello my name is Java", "hello my name is C++", "hello my name is Ruby", "hello my name is Python", "hello my name is nick", "hello my name is Nick", "hello my name is Carly", "hello my name is Ashley]])

 x =  x.transpose()

Answer 1

此处不需要循环。这是一个解决方案：

from collections import Counter
from itertools import chain
import numpy as np

string_data = np.array([["hello my name is nick", "hello my name is Nick", "hello my name is Carly",
                         "hello my name is Ashley", "hello my name is Java", "hello my name is C++",
                         "hello my name is Ruby", "hello my name is Python"],
                         ["hello my name is Java", "hello my name is C++", "hello my name is Ruby",
                          "hello my name is Python", "hello my name is nick", "hello my name is Nick",
                          "hello my name is Carly", "hello my name is Ashley"]])

word_count = Counter(' '.join(chain.from_iterable(string_data)).split())

# Counter({'Ashley': 2,
#          'C++': 2,
#          'Carly': 2,
#          'Java': 2,
#          'Nick': 2,
#          'Python': 2,
#          'Ruby': 2,
#          'hello': 16,
#          'is': 16,
#          'my': 16,
#          'name': 16,
#          'nick': 2})

TypeError：只能将size-1数组转换为Python标量

1 个答案: