DataFrame迭代過程中多行修改

方法1：df.loc[conditions]=row.values，逐行地進行整行替換

for row in df.iterrows():
    row['given_amount']=row['amount'];
    row['given_percent']=1
    row['remain_amount']=0
    row['remain_percent']=0
    total_amount=total_amount-row['amount']
    #df_debts.iloc[index]=row #此法不可行，會導致重新迭代。
    df.loc[df['sno']==row['sno']]=row.values

 方法2：用loc，批量賦值替換

indexer=df.loc[condition]
df.loc[indexer,'col_1']=new_value
df.loc[indexer,'col_2']=df.loc[indexer,'col_3']*10