如何使用 Python 脚本为 Excel 工作表中的值形成一对多关系？

Posted 2023-03-11

【中文标题】如何使用 Python 脚本为 Excel 工作表中的值形成一对多关系？

【英文标题】：How to form one to many relation for values in Excel sheets using Python script?

【发布时间】：2020-08-29 22:36:07

【问题描述】：

我有一个 Excel 表格，附件中也有如下表格：

sheet 1 contains : 
SOURCE-KEY  PAYER-NAME  PAYER-CODE-TYPE PAYER-CODE
1           INDUSTRY    PAY             123485
2           LEADING     PAY             123422

Sheet 2 contains :
SOURCE-KEY  RECIEVER-KEY    RECIEVER-KEY-TYPE   RECIEVER-NAME   RECIEVER-CODE
1           1               PERSON              CEO             A222222221
1           2               PERSON              CO-FOUNDER      A222222221
2           3               PERSON              CFO             A222222221

现在我想在两张表之间生成一对多算法，这意味着对于 SOURCE_KEY 的每个值打印 RECEIVER SHEET 中的所有值

意思是：

INFORMATION SOURCE KEY 1: parent
    SERVICE PROVIDER  KEY 1: child
    SERVICE PROVIDER KEY  2: child 
INFORMATION SOURCE KEY 2: parent 
    SERVICE PROVIDER  KEY 3: child
    SERVICE PROVIDER KEY  4: child  

以下是编写的代码：

def loop_2100A(self,source_keys):   
    Information_Reciever = pd.read_excel(filename, sheet_name=1, index_col=0)
    Reciever_keys=list(Information_Reciever["RECIEVER KEY"])
    Source_key_in_Reciever=list(Information_Reciever.index.values)
    elem =1
    elems_in_both_lists = set(Source_key_in_Reciever) & set(Reciever_keys

    if elem in elems_in_both_lists:
        print("Value of Source key inside if ", elem)
        print("Value of Reciever Key inside if", elem)
        res = dict(zip(Source_key_in_Reciever, Reciever_keys))

    for p in source_keys:
            print("Value of P is ",p)
       for x,y in res.items():
                print("COMPARING of p is  and Value of x is  IF EQUAL GO AHEAD ".format(p,x))
          if[p==x]:
                print("Value of Source key passed in 2100A is", x)
                print("Value of Reciever key passed to 2100B is", y)
               # CALLING SOME FUNCTION TO PERFORM OPERATION ONLY WHEN P==X
        else:
            print("Return back to Parent tag")
    return len(source_keys)

def run(self):
Read_Excel = pd.read_excel(filename, sheet_name=0,index_col=0)
    source_keys = list(Read_Excel.index.values)
    segs = self.loop_2100A(Parser, filename,source_keys)

输出：

*********Inside 2100A loop*********
Value of Source key inside if  1
Value of Reciever Key inside if 1
Dictionary formed is 1: 2, 2: 3
Value of P is  1
COMPARING of p is 1 and Value of x is 1 IF EQUAL GO AHEAD
Value of Parent Source key passed in 2100A is 1
Value of Child Reciever key passed to 2100B is 2
COMPARING of p is 1 and Value of x is 2 IF EQUAL GO AHEAD
****Value of Parent Source key passed in 2100A is 2
Value of Child Reciever key passed to 2100B is 3****
Value of P is  2
COMPARING of p is 2 and Value of x is 1 IF EQUAL GO AHEAD
**Value of Parent Source key passed in 2100A is 1
Value of Child Reciever key passed to 2100B is 2**
COMPARING of p is 2 and Value of x is 2 IF EQUAL GO AHEAD
Value of Parent Source key passed in 2100A is 2
Value of Child Reciever key passed to 2100B is 3

Process finished with exit code 0

预期输出：

*********Inside 2100A loop*********
Value of Source key inside if  1
Value of Reciever Key inside if 1
Dictionary formed is 1: 2, 2: 3
Value of P is  1
COMPARING of p is 1 and Value of x is 1 IF EQUAL GO AHEAD
Value of Parent Source key passed in 2100A is 1
Value of Child Reciever key passed to 2100B is 2
COMPARING of p is 1 and Value of x is 2 IF EQUAL GO AHEAD
NOT EQUAL Return back to Parent tag
Value of P is  2
COMPARING of p is 2 and Value of x is 1 IF EQUAL GO AHEAD
NOT EQUAL Return back to Parent tag
COMPARING of p is 2 and Value of x is 2 IF EQUAL GO AHEAD
Value of Parent Source key passed in 2100A is 2
Value of Child Reciever key passed to 2100B is 3

Process finished with exit code 0

输出中的粗体是错误的。因此，即使 P 和 X 的比较失败，它也会进入 If 条件，或者我的 be for 循环和 if 条件错误。

【参考方案1】：

使用if p == x: 而不是if [p == x]:。它们是不同的。

    if [2 == 3]:  # if [False]:
        print('passed');  # 'passed' will be printed

    if 2 == 3:  # if False:
        print('passed');  # 'passed' will not be printed

[False] 对象被视为True。你可以通过执行print(bool([False]))来检查它，它会打印True。

您可以在 Python 中查看有关 Truth Value Testing 的文档。

【讨论】：

你能帮我解决这个问题吗：***.com/questions/62417455/…

@HarshitKakkar 我发布了这个问题的答案:)