我正在使用Tkinter和Peewee ORM编写脚本。我有:
db = SqliteDatabase('data.db')
introspector = Introspector.from_database(db)
models = introspector.generate_models()
cities_list = []
account_obj = models['accounts']
recordset= account_obj.select()
for r in recordset:
city = str(r.city)
elapsed_hours = (time.time()-int(r.datetime))/3600
cities_list.append(str(r.city)+'-'+str(elapsed_hours))
master = tk.Tk()
variable = StringVar(master)
variable.set(cities_list[0]) # default value
w = OptionMenu(master, variable, *cities_list)
w.pack()
def ok():
print ("value is:" + variable.get())
v_list = variable.get().split('-')
print type(account_obj)
recordset = account_obj.select().where(account_obj.city.contains(v_list[0])).get()
for r in recordset:
r.datetime=int(time.time())
r.update()
button = Button(master, text="OK", command=ok)
button.pack()
mainloop()
在第二个选择陈述中:
recordset = account_obj.select().where(account_obj.city.contains(v_list[0])).get()
我得到了:
Traceback (most recent call last):
<class 'peewee.BaseModel'>
File "...lib\lib-tk\Tkinter.py", line 1542, in __call__
return self.func(*args)
File "... myscript.py", line 46, in ok
for r in recordset:
TypeError: 'accounts' object is not iterable
我做错了什么?
答案 0 :(得分:0)
应@Nae的请求这是我重新安排的工作代码:
master = tk.Tk()
variable = StringVar(master)
variable.set(cities_list[0]) # default value
w = OptionMenu(master, variable, *cities_list)
w.pack()
def ok():
print ("value is:" + variable.get())
master.destroy()
button = Button(master, text="OK", command=ok)
button.pack()
mainloop()
v_list = variable.get().split('-')
recordset = account_obj.select().where(account_obj.city.contains(v_list[0]))
for r in recordset:
r.datetime = int(time.time())
r.save()
问题原来是我从csv导入的表没有主键。一旦我添加了,save()就开始工作了。请参阅http://docs.peewee-orm.com/en/latest/peewee/querying.html#updating-existing-records