所以這是交易，我有這個(gè)數(shù)據(jù)框，讓我們將其命名為 lovely_df：   foo? fah? boo? Nice Numbers0  foo  fah  boo  101  meh  fah  boo  202  meh  fah  boo  303  foo  fah  boo  404  meh  fah  boo  50試圖這樣做：lovely_df.loc[lovely_df['foo?'] == 'meh',:]['Nice Numbers'].add(1)它返回給我：   Nice Numbers1  212  314  51如果將其保存到 lovely_df 中就可以了，但它沒有，所以我嘗試了：lovely_df.loc[lovely_df['foo?'] == 'meh',:]['Nice Numbers'] = lovely_df.loc[lovely_df['foo?'] == 'meh',:]['Nice Numbers'].add(1)它確實(shí)有效，但它給了我：<input>:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame.Try using .loc[row_indexer,col_indexer] = value instead所以就是這樣，我只是想在幾行的單列中添加一個(gè)特定的數(shù)字，而不會(huì)讓 Python 對(duì)我哭泣。多謝你們！