使用dataframe Python中的索引以最快的方式创建字典的新列表

使用dataframe Python中的索引以最快的方式创建字典的新列表,python,dataframe,dictionary,multiprocessing,python-multiprocessing,Python,Dataframe,Dictionary,Multiprocessing,Python Multiprocessing,我在字典索引\u data中有大约200密耳的数据: index_data = [ {3396623046050748: [0, 1], 3749192045350356: [2], 4605074846433127: [3], 112884719857303: [4], 507466746864539: [5], ..... } ] CustID Score Number1 Numb

我在字典
索引\u data
中有大约200密耳的数据:

index_data = [
    {3396623046050748: [0, 1],
     3749192045350356: [2],
     4605074846433127: [3],
     112884719857303: [4],
     507466746864539: [5],
     .....
    }
]
CustID               Score     Number1     Number2     Phone
3396623046050748     2           2           3         0000
3396623046050748     6           2           3        0000
3749192045350356     1           56          23        2222
4605074846433127     67          532         321       3333
112884719857303      3           11          66        4444
507466746864539      7           22          96        5555
键是CustId中的值,值是df_数据中CustId的索引:

index_data = [
    {3396623046050748: [0, 1],
     3749192045350356: [2],
     4605074846433127: [3],
     112884719857303: [4],
     507466746864539: [5],
     .....
    }
]
CustID               Score     Number1     Number2     Phone
3396623046050748     2           2           3         0000
3396623046050748     6           2           3        0000
3749192045350356     1           56          23        2222
4605074846433127     67          532         321       3333
112884719857303      3           11          66        4444
507466746864539      7           22          96        5555
我有一个数据框
df_data

index_data = [
    {3396623046050748: [0, 1],
     3749192045350356: [2],
     4605074846433127: [3],
     112884719857303: [4],
     507466746864539: [5],
     .....
    }
]
CustID               Score     Number1     Number2     Phone
3396623046050748     2           2           3         0000
3396623046050748     6           2           3        0000
3749192045350356     1           56          23        2222
4605074846433127     67          532         321       3333
112884719857303      3           11          66        4444
507466746864539      7           22          96        5555
注意:如果
CustID
重复,则只有列
Score
在每行中有不同的数据

我想创建一个新的dict列表(
Total_Score
是每个客户ID的平均
Score
Number
Number2
除以
Number1
):

我的解决方案是循环我的字典并使用多处理 从多处理导入进程,管理器

def calculateTime(ns, value):
    # get data with share of each process
    df_data2 = ns.df_data
    result2 = ns.result

    # Create new DF from index and old DF
    df_sampleresult = df_data2.loc[value].reset_index(drop = True)

    # create sample list to save data need to append in final result
    dict_sample['CustID'] = df_sampleresult['CustID'][0]
    dict_sample['Time_Score'] = df_sampleresult['Score'].mean()

    result2.append(dict_sample)
    ns.result = result2
    ns.df_data = df_data


if __name__ == '__main__':
    result = list()
    manager = Manager()
    ns = manager.Namespace()
    ns.df = df_data
    ns.result = result

    job = [Process(target = calculateTime, args=(ns,value)) for key,value in 
    index_data.items()]
    _ = [p.start() for p in job]
    _ = [p.join() for p in job]

但它不起作用。性能慢,内存高?我的多进程设置正确吗?还有其他方法吗?

什么是“newfunction”和“table”,在哪里使用“CalculateTime”?编辑问题以显示抱歉,我现在将更新。什么是“newfunction”和“table”,在哪里使用“CalculateTime”?编辑问题以显示抱歉,我将立即更新。
In [353]: df
Out[353]: 
             CustID  Score  Number1  Number2  Phone
0  3396623046050748      2        2        3   0000
1  3396623046050748      6        2        3   0000
2  3749192045350356      1       56       23   2222
3  4605074846433127     67      532      321   3333
4   112884719857303      3       11       66   4444
5   507466746864539      7       22       96   5555

    
In [351]: d = df.groupby(['CustID', 'Phone', round(df.Number2.div(df.Number1), 2)])['Score'].mean().reset_index(name='Total_Score').rename(columns={'level_2': 'Number'}).to_dict('records')

In [352]: d
Out[352]: 
[{'CustID': 112884719857303, 'Phone': 4444, 'Number': 6.0, 'Total_Score': 3},
 {'CustID': 507466746864539, 'Phone': 5555, 'Number': 4.36, 'Total_Score': 7},
 {'CustID': 3396623046050748, 'Phone': 0000, 'Number': 1.5, 'Total_Score': 4},
 {'CustID': 3749192045350356, 'Phone': 2222, 'Number': 0.41, 'Total_Score': 1},
 {'CustID': 4605074846433127, 'Phone': 3333, 'Number': 0.6, 'Total_Score': 67}]