我修改了找到的以下代码here，以便在现有的excel工作表中创建透视表：import win32com.client as win32

win32c = win32.constants

import sys

import itertools

tablecount = itertools.count(1)

def addpivot(wb,sourcedata,title,filters=(),columns=(),

rows=(),sumvalue=(),sortfield=""):

newsheet = wb.Sheets.Add()

newsheet.Cells(1,1).Value = title

newsheet.Cells(1,1).Font.Size = 16

tname = "PivotTable%d"%tablecount.next()

pc = wb.PivotCaches().Add(SourceType=win32c.xlDatabase,

SourceData=sourcedata)

pt = pc.CreatePivotTable(TableDestination="%s!R4C1"%newsheet.Name,

TableName=tname,

DefaultVersion=win32c.xlPivotTableVersion10)

for fieldlist,fieldc in ((filters,win32c.xlPageField),

(columns,win32c.xlColumnField),

(rows,win32c.xlRowField)):

for i,val in enumerate(fieldlist):

wb.ActiveSheet.PivotTables(tname).PivotFields(val).Orientation = fieldc

wb.ActiveSheet.PivotTables(tname).PivotFields(val).Position = i+1

wb.ActiveSheet.PivotTables(tname).AddDataField(wb.ActiveSheet.PivotTables(tname).

PivotFields(sumvalue),sumvalue,win32c.xlSum)

def runexcel():

excel = win32.gencache.EnsureDispatch('Excel.Application')

#excel.Visible = True

try:

wb = excel.Workbooks.Open('18.03.14.xls')

except:

print "Failed to open spreadsheet 18.03.14.xls"

sys.exit(1)

ws = wb.Sheets('defaulters')

xldata = ws.UsedRange.Value

newdata = []

for row in xldata:

if len(row) == 4 and row[-1] is not None:

newdata.append(list(row))

rowcnt = len(newdata)

colcnt = len(newdata[0])

wsnew = wb.Sheets.Add()

wsnew.Range(wsnew.Cells(1,1),wsnew.Cells(rowcnt,colcnt)).Value = newdata

wsnew.Columns.AutoFit()

src = "%s!R1C1:R%dC%d"%(wsnew.Name,rowcnt,colcnt)

addpivot(wb,src,

title="Employees by leads",

filters=("Leads",),

columns=(),

rows=("Name",),

sumvalue="Actual hours",

sortfield=())

if int(float(excel.Version)) >= 12:

wb.SaveAs('new18.03.14.xlsx',win32c.xlOpenXMLWorkbook)

else:

wb.SaveAs('new18.03.14.xls')

excel.Application.Quit()

if __name__ == "__main__":

runexcel()

这行代码，

wb.ActiveSheet.PivotTables(tname).AddDataField(wb.ActiveSheet.PivotTables(tname).PivotFields(sumvalue),sumvalue,win32c.xlSum)

返回以下错误：

pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, u'Microsoft Excel', u'PivotFields method of PivotTable class failed', u'xlmain11.chm', 0, -2146827284), None)。

删除该行时，将生成不带任何数据字段的透视表。我做错什么了吗？