更新时间:2023-12-01 10:05:28
您需要 副本
:
df1 = df[df['name_code'].isin(wanted)].copy()
如果以后修改 df1
中的值,您会发现修改不会传播回原始数据( df
),而熊猫会警告。
If you modify values in df1
later you will find that the modifications do not propagate back to the original data (df
), and that Pandas does warning.