import win32com.client as win32
def OpenWorkbook(xlapp, xlfile):
    try:        
        xlwb = xlapp.Workbooks(xlfile)            
    except Exception as e:
        try:
            xlwb = xlapp.Workbooks.Open(xlfile)
        except Exception as e:
            print(e)
            xlwb = None                    
    return(xlwb)