通过Python删除特定的转换

Question

我正在通过以下脚本按需创建转换（覆盖特定值）：

from Spotfire.Dxp.Data import *
from Spotfire.Dxp.Data.Transformations import *
from System.Collections.Generic import List, Dictionary 
from Spotfire.Dxp.Data import DataTable 
from System.Collections import ArrayList

#Get values to establish the key of the table
overrideMonth = str(Document.Properties['OverrideMonth'])
overrideItem = str(Document.Properties['OverrideItem'])
overrideCustomer = str(Document.Properties['OverrideCustomer'])

overrideKey = overrideMonth[:-11].strip() + '~' + overrideItem + '~' + overrideCustomer

#Get existing value based on this key
table=Document.Data.Tables['MasterOverride']
rowSelection = table.Select('KeyColumn = ' + '"' + overrideKey + '"')

cursor = DataValueCursor.CreateFormatted(table.Columns["Override Value"])
for  row in  table.GetRows(rowSelection.AsIndexSet(),cursor):
    rowIndex = row.Index
    currentOverrideValue = cursor.CurrentValue
    break

#Get values to actually write out
overrideValue = Document.Properties['OverrideValue']

#Replace specific value Transformation for the Value
dataOperation = table.GenerateSourceView().OperationsSupportingTransformations[0];
transformations = dataOperation.GetTransformations();

column = DataColumnSignature("Override Value",DataType.Real);
row_id_cols=[DataColumnSignature("KeyColumn",DataType.String)]
row_id_col_values = [overrideKey]
transformations.Add(ReplaceSpecificValueTransformation(column, float(currentOverrideValue), overrideValue, row_id_cols, row_id_col_values, False))
dataOperation.ReplaceTransformations(transformations);

这对实现新的转换非常有用。但是现在，我想根据月，物料和客户的相同输入，使他们能够删除他们可能添加的转换。现在，我可以使用以下脚本删除所有转换：

from Spotfire.Dxp.Data import *
from Spotfire.Dxp.Data.Transformations import *

table=Document.Data.Tables['MasterOverride']

#Replace specific value Transformation
dataOperation = table.GenerateSourceView().OperationsSupportingTransformations[0];
transformations = dataOperation.GetTransformations();

#clear all transformations on this dataTable if needed
dataOperation.ReplaceTransformations("")

但是我不确定如何删除特定的转换。注意，它们都是ReplaceSpecificValueTransformation类型。