Pandas 分列多列

Question

I have a dataframe that contains in the column "Title" the following information:

Title
2.1 text1 and bla bla 1
2.2 text2 bla 2
2.3 text3 other text 7

I tried to split the column in the following manner:

col1     Title               col3
2.1      text1 and bla bla    1
2.2      text2 bla            2
2.3      text3 other text     7

I tried to follow multiple ways but without success.

Answer 1

You can split on white space to obtain x . Then take the first items of lists and assign them to 'col1' and the last items to 'col3' . Finally take what's left, join them back and assign them to 'Title' :

x = df['Title'].str.split()
df['col1'] = x.str[0]
df['col3'] = x.str[-1]
df['Title'] = x.apply(lambda y: ' '.join(y[1:-1]))
df = df[['col1','Title','col3']]

Output:

  col1              Title col3
0  2.1  text1 and bla bla    1
1  2.2          text2 bla    2
2  2.3   text3 other text    7

@Neither gives a much better solution in the comments.

df.Title.str.split(r"^(\d\.\d)\s(.+)\s(\d)$", expand=True).iloc[:, 1:-1].add_prefix("col_")