def modifyOnePurchaser(self):
     pur_no = input("请输入需要修改的进货员的编号:").strip()
     pur = Basic.queryOnePurchase(pur_no)
     if pur == []:
         print("该售货员不存在.")
         return
     pur_name = input("请输入修改后的姓名:").strip()
     pur_sex = input("请输入该员工的性别:").strip()
     pur_age = int(input("请输入该员工的年龄:").strip())
     pur_salary = float(input("请输入该员工的月工资:").strip())
     pur_phone = input("请输入该员工的手机号:").strip()
     pur_entry = input("请输入该员工的出生日期(eg: 2019-6-4):").strip()
     try:
         Basic.modifyOnePurchaser(pur_no, pur_name, pur_sex, pur_age, pur_salary, pur_phone, pur_entry)
         print("修改成功.")
     except Exception as e:
         print("修改失败,原因:", e)