pandas将系列值折叠为一个值

Question

如何将系列合并为一个值？我试过pd.concat()。

  dict = {"Cities": ["Chicago", "Hong Kong", "London"], "People": ["John", "Mike", "Sue"]}
  df = pd.Dataframe.from_dict(dict)

        Cities People
  0    Chicago   John
  1  Hong Kong   Mike
  2     London    Sue

*所需的输出：*

"John Mike Sue"

Answer 1

除' '.join(df.People)

外，您可以使用字符串方法Series.str.cat

In [96]: df.People.str.cat(sep=' ')
Out[96]: 'John Mike Sue'

Answer 2

我相信' '.join(series)应该这样做

Answer 3

试试这个：

# Cannot be named dict, as dict is a type.
dictionary = {"Cities": ["Chicago", "Hong Kong", "London"], "People": ["John", "Mike", "Sue"]}
print(' '.join(dictionary['People'])

您不必输入第一行，因为它是注释。