Python：使用For循环使用条件If语句创建新列

Question

我正在尝试使用for循环创建以下数据框。下面是我想用紫色突出显示我想要创建的字段的表格。

以下是我写的代码。当我跑的时候没有任何反应。我正在寻找“收入细分”，“费用细分”和“利润细分”的三个列不会被创建。也没有错误日志。

非常感谢任何帮助！

regions = ['East', 'Central', 'West', 'Midwest']
target_var = ['Revenue', 'Expenses', 'Profit']

output_df = pd.DataFrame()

for i in regions:
    for v in target_var: 

        # Create Counter
        temp_df_1 = df_HA_noHA_append_5[df_HA_noHA_append_5['Region'] == i]
        temp_df_1['Counter'] = range(len(temp_df_1))
        temp_df_1['Counter_2'] = temp_df_1['Counter'] + 1

        # Split 
        temp_df_1_AUM_min = temp_df_1[v].min()
        percentile_value = 0.99
        temp_df_1_AUM_max = temp_df_1[v].quantile(percentile_value)

        # Cuts 
        No_Cuts = 3 

        # Intervals 
        Intervals = temp_df_1_AUM_max / No_Cuts


        # Create Interval Table 
        Interval_Min = [temp_df_1_AUM_min, Intervals, Intervals*2]
        Interval_Max = [Intervals, Intervals*2, temp_df_1_AUM_max]
        Segment = ['Low', 'Medium', 'High']    


        # Dataframe
        df_Intervals = pd.DataFrame({'Interval_Min': Interval_Min, 'Interval_Max': Interval_Max, 'Segment': Segment})
        df_Intervals = df_Intervals[['Interval_Min', 'Interval_Max', 'Segment']]


        # Create Segments 
        Segment = []

        # Loop through the AUM 12_MONTH SNAPSHOT column 

        for i in temp_df_1[v]:
            if i >= df_Intervals.iloc[0, 0] and i <= df_Intervals.iloc[0, 1]:
                Segment.append(df_Intervals.iloc[0, 2])
            elif i > df_Intervals.iloc[1, 0] and i <= df_Intervals.iloc[1, 1]:
                Segment.append(df_Intervals.iloc[1, 2])
            elif i > df_Intervals.iloc[2, 0]:
                Segment.append(df_Intervals.iloc[2, 2])
            else:
                Segment.append('')

            # print (df_Intervals)


        # Append list to new column 

        temp_df_1[v] = Segment


        output_df = output_df.append(temp_df_1)