如何在类中返回 self 的值？

Question

我有一个名为buttongen 的类，它根据建筑物内的房间生成按钮。将对房间进行评估，并将结果存储在数据库中。如何返回按钮上的文本值以存储在变量中？每次我尝试存储房间的结果时，它都会给出错误TypeError: __init__() missing 2 required positional arguments: 'i' and 'row'。

编辑：包括搜索建筑物和生成按钮的代码部分

    def search():
        global screen13
        global btn
        screen13 = Tk()
        screen13.geometry("300x250")
        screen13.title("Rooms")
        sitename3_info = sitename.get().strip()
        if sitename3_info:
            cursor = cnn.cursor()
            # combine the two SQL statements into one
            sql = ("SELECT roomname FROM rooms, Sites "
                   "WHERE rooms.siteID_fk2 = Sites.siteID AND siteName = %s")
            cursor.execute(sql, [sitename3_info])
            rooms = cursor.fetchall()
            # remove previous result (assume screen13 contains only result)
            for w in screen13.winfo_children():
                w.destroy()
            if rooms:
                for i, row in enumerate(rooms):
                    buttongen(i, row)
            else:
                Label(screen13, text="No room found").grid()

    class buttongen():
        def __init__(self,i,row):
            # creates a self generated amount of buttons which correspond to the amount of rooms in the table.
            self.i = i
            self.row = row
    
            self.roomname = self.row[0]
            self.btn = Button(screen13, text = self.roomname, command=lambda :[print(self.roomname), action()])
            self.btn.grid(row=i, column=0)
        def showroomname(self):
            print(self.roomname)

如何在roomclicked_info = buttongen() 中存储按钮上的文本

Answer 1

正确的代码可能是这样的：

i = 10   # the i you want
row = 10 # the row you want
roomclicked_info = buttongen(i, row)

class buttongen 需要 2 个必需的位置参数。

Answer 2

要初始化buttongen()的对象，您需要传递def __init__(self,i,row):中定义的两个必需参数i和row 。

当您使用roomclicked_info = buttongen() 创建对象时，您没有在buttongen() 中指定i 和row 参数。您可以在此处传递i 和row 的值，例如roomclicked_info = buttongen(i, row)。