如何从QuerySet列表中删除MSSQL十进制声明？

Question

I have a sorting algorithm that orders a list with parents and their children. Here is a working example: Tutorials Point Coding Ground .

This working example, however, has a predefined "cleaned" list. The only difference however with this predefined list is that I have removed the "Decimal Declarations" (or whatever they are called) from the list. Here is an example of both dirty and clean lists.

Dirty list:

item_list = [
    {...},
    {'qmaQuoteAssemblyID': 0, 'qmaLevel': Decimal('1'), 'qmaParentAssemblyID': 0, 'qmaPartShortDescription': '12U x 600 x 650 Professional Rack', 'qmaPartID': 'RACK S9', 'qmaQuantityPerParent': Decimal('1.00000')},
    {...}]

Clean List:

item_list = [
    {...},
    {'qmaQuoteAssemblyID': 0, 'qmaLevel': 1, 'qmaParentAssemblyID': 0, 'qmaPartShortDescription': '12U x 600 x 650 Professional Rack', 'qmaPartID': 'RACK S9', 'qmaQuantityPerParent': 1.00000},
    {...}]

As you can see from both the examples that the dirty list has Decimal('somevalue') surrounding it's DecimalField value. However with the clean list it has that removed allowing it to go through the algorithm without a problem.

When I run the dirty list through the algorithm I get this error:

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
NameError: name 'Decimal' is not defined

And within my Django project the list is simply considered empty.

This makes sense because Decimal isn't defined. But my environemnt seems to be treating Decimal('somevalue') as a method/function instead of it's raw decimal value. I believe this "junk" is added around the value either from my MSSQL database or some other MSSQL → Django programs I have running parallel with my Django project.

I currently create the list like so:

con1 = Q(qmaQuoteID=quote_id)
con2 = Q(qmaQuoteLineID=quote_line_id)
query = QuoteAssemblies.objects.filter(con1 & con2
                              ).order_by('qmaQuoteAssemblyID'
                              ).values('qmaQuoteAssemblyID', 'qmaParentAssemblyID', 'qmaLevel', 'qmaPartID', 'qmaPartShortDescription', 'qmaQuantityPerParent')
item_list = list(query)

Is there a way to clean the list to remove the Decimal('somevalue') from the value so it goes through my algorithm correctly?

Answer 1

to avoid

raceback (most recent call last):
  File "<stdin>", line 2, in <module>
NameError: name 'Decimal' is not defined

just

from decmal import Decimal

if still does not work out and want to convert decimal to int or string,

for item in item_list:
    item['qmaLevel'] = int(item['qmaLevel'])
    # item['qmaLevel'] = str(item['qmaLevel'])

Answer 2

I found that this was the best way to deal with Decimal('X') being reprieved as a method/function. I simply declared Decimal as a class and made sure python only sees it as a value and in essence disregard the junk around it:

class Decimal:
    def __init__(self, value):
        self.value = value
        def value(self):
            print(self.value)