2017-12-27 297 views
0

enter image description here类型错误:“账户”对象不是可迭代

我正在使用的Tkinter和Peewee ORM的脚本。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SELECT语句:

recordset = account_obj.select().where(account_obj.city.contains(v_list[0])).get() 

我越来越:

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 

我在做什么错?

+1

通常,'get()'只返回一个实例(如果有的话)。你可能应该用'all()'(它返回一个'iterable *'列表)代替行:'recordset = account_obj.select()。where(account_obj.city.contains(v_list [0]) )获得()'。希望这是有道理的,因为我对这个框架没有经验。 – CristiFati

+0

recordset = account_obj.select()。where(account_obj.city.contains(v_list [0]))。all() AttributeError:'SelectQuery'对象没有'all'属性 – user61629

+0

我担心会发生这种情况。然后尝试删除'.get()'。 – CristiFati

回答

0

在@Nae的请求,这是我工作的代码重新排列:

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() 

问题竟然是我的表,我从CSV导入的没有一个主键。一旦我添加了,save()开始工作。请参阅http://docs.peewee-orm.com/en/latest/peewee/querying.html#updating-existing-records

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