python - 如何字符串连接 Pandas 中的多个字符串列？

Question

我想将 DataFrame 中的两行连接成一行。我当前的代码:

import pandas as pd

df = pd.DataFrame(columns = ['string1', 'string2'])
df.loc[len(df), :] = ['Hello', 'This is Sam']
df.loc[len(df), :] = ['how are you?', 'from Canada']

#create the next row: ['Hello how are you?', 'This is Sam from Canada']

怎么做？

可以测试代码here .

Answer 1

将agg与append结合使用:

df = df.append(df.agg(' '.join), ignore_index=True)
df

              string1                  string2
0               Hello              This is Sam
1        how are you?              from Canada
2  Hello how are you?  This is Sam from Canada