def __aggiungi__(self):
filelist = filedialog.askopenfilenames(filetypes=[("PDF file",".pdf")])
for file in filelist:
if(file in self.files):
continue
self.i = self.i+1
self.files.append(file)
split = file.split("/").pop()
self.list_file.insert("",self.i,text=split,values=(PDFMangerFacade.pagescount(file)))
self.__controlla__()
