solved, if it can be useful to others here is my code:
import pythoncom
import win32com.client
def getWorkbook(workbookName):
lenstr = len(workbookName)
workbook = None
rot = pythoncom.GetRunningObjectTable()
rotenum = rot.EnumRunning()
while True:
monikers = rotenum.Next()
if not monikers: break
ctx = pythoncom.CreateBindCtx(0)
name = monikers[0].GetDisplayName(ctx, None);
if name[-lenstr:] == workbookName:
obj = rot.GetObject(monikers[0])
workbook =
win32com.client.Dispatch(obj.QueryInterface(pythoncom.IID_IDispatch))
return workbook
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