问Python字典访问以typeerror结束

EN

 elif choice=='2':
                    part_name = input('Which part are you willing to change?\n(CaSe SeNsEtIvE)\nname--age--score--ID? ')
                    if part_name in list_keys:
                        new_value = input("New value? ")
                    else:
                        print('part not found!')
                        ending()
                    listname[final[part_name]] = new_value
                    ending()

import os, msvcrt, strip_name
list_keys, listname = ['name', 'age', 'score', 'ID'], {'AsgharAkbari':{'name':"Asghar Akbari",'age': 28,'score': 86,'ID':23897},'amirrezavavsari':{'name':"amirreza vavsari",'age':15,'score': 94,'ID':53614}}
   

 def delete():
        os.system('cls')
        print("which student are you willing to delete? (print back to go back)")
      
            del_name = input("enter fullname(CaSe SeNsEtIvE): ")
       
            final = strip_name.delspace(del_name)
            if final in listname.keys():
                choice = input('1- Delete fully\n2-change a part')
                if choice=='1':
                    del listname[final]
                    ending()
                elif choice=='2':
                    part_name = input('Which part are you willing to change?\n(CaSe SeNsEtIvE)\nname--age--score--ID? ')
                    if part_name in list_keys:
                        new_value = input("New value? ")
                    else:
                        print('part not found!')
                        ending()
                    listname[final[part_name]] = new_value