将行、列值转换为字典和数据框 pandas

Convert a row, column value to dict and to a dataframe pandas

python 菜鸟在这里。

我有一个数据框 people,其中 nametext 作为两列。

  name       text
0 Obama      Obama was the 44th president of the...
1 Trump      Donald J. Trump ran as a republican...

我只需要对 Obama 进行一些探索性分析。

obama= people[people['name'] == 'Obama'].copy()
obama.text

35817    Obama was the 44th president of the unit...
Name: text, dtype: object

如何将文本转换为字典作为新列,键作为单词,单词计数作为值?
示例:

   name       text                                  dictionary
0 Obama      Obama was the 44th president of the... {'Obama':1, 'the':2,...}

完成后,如何将字典转换为单独的数据框?
预期:

   word   count
0  Obama  1
1  the    2

您可以使用集合模块中的 Counter 对象:

import collections

people['dictionary'] = people.text.apply(lambda x: dict(collections.Counter(x.split())))

要将其中一个字典转换为数据框:

dictionary = people['dictionary'][0]
pd.DataFrame(data={'word': dictionary.keys(), 'count': dictionary.values()})