如何修复Tkinter帧控制器密钥错误？

class Kiosk(Tk): def __init__(self, *args, **kwargs): Tk.__init__(self, *args, **kwargs) self.title_font = tkfont.Font(family='Helvetica', size=18, weight="bold", slant="italic") GPIO.setwarnings(False) container = Frame(self) container.pack(side="top", fill="both", expand=True) container.grid_rowconfigure(0, weight=1) container.grid_columnconfigure(0, weight=1) self.style = Style() self.style.theme_use('alt') self.style.map('TCombobox', fieldbackground=[('readonly','white')]) self.db = pymysql.connect(host = "192.168.1.11",port = 3306, user = "root",passwd = "justin",db= "thesis_db") self.cursor = self.db.cursor() self.QueryResident = "CREATE TABLE IF NOT EXISTS residents_db (FIRST_NAME varchar(255) not null, MIDDLE_NAME varchar(255) not null, LAST_NAME varchar(255) not null,SEX varchar(255) not null, BIRTH_DATE date, CIVIL_STATUS varchar(255) not null, PLACE_OF_BIRTH varchar(255) not null, RFID varchar(255) not null)" self.cursor.execute(self.QueryResident) self.frames = {} for F in (Start_Page, Registration_Page_Admin, Registration_Page_User, Update_User, Update_Admin, Login_RFID, main_page): page_name = F.__name__ frame = F(parent=container, controller=self) self.frames[page_name] = frame frame.grid(row=0, column=0, sticky="nsew") self.show_frame("Start_Page") def show_frame(self, page_name): frame = self.frames[page_name] frame.tkraise() def get_page(self, page_class): return self.frames[page_class] class Start_Page(Frame): def __init__(self, parent, controller): Frame.__init__(self, parent) self.controller = controller label = Label(self, text="Login", font=controller.title_font) label.pack(side="top", fill="x", pady=10) button1 = Button(self, text="Login", command=lambda: controller.show_frame("Login_RFID")) button1.pack() class Login_RFID(Frame): def __init__(self, parent, controller): Frame.__init__(self, parent) self.parent = parent self.controller = controller self.get_Firstn1 = None self.img_login = (Image.open("Scan_RFID.png")) self.image_login = self.img_login.resize((550,417)) self.img_background_login = ImageTk.PhotoImage(self.image_login) self.db = pymysql.connect(host = "192.168.1.11",port = 3306, user = "root",passwd = "justin",db= "thesis_db") self.cursor = self.db.cursor() label_login = Label(self, image = self.img_background_login) label_login.pack(fill="both", expand = 1) label_login.bind('<Enter>',self.login_RFID) def login_RFID(self, event): self.reader = SimpleMFRC522() self.id, self.text = self.reader.read() self.cursor.execute("SELECT * FROM residents_admin WHERE RFID = %s",str(self.id)) if (self.cursor.fetchone() is not None): self.controller.show_frame("main_page") qwe = False else: self.cursor.execute("SELECT * FROM residents_db WHERE RFID = %s", str(self.id)) if (self.cursor.fetchone() is not None): self.controller.show_frame("main_page") qwe = False else: messagebox.showerror("Warning!","Your RFID card is not yet registered!") def get_data(self): self.cursor.execute("SELECT * FROM residents_admin WHERE RFID = %s",str(self.id)) if (self.cursor.fetchone() is not None): self.cursor.execute("SELECT FIRST_NAME FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Firstn = self.cursor.fetchone() self.get_Firstn1 = str(self.get_Firstn[0]) self.cursor.execute("SELECT MIDDLE_NAME FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Middlen = self.cursor.fetchone() self.get_Middlen1 = str(self.get_Middlen[0]) self.cursor.execute("SELECT LAST_NAME FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Lastn = self.cursor.fetchone() self.get_Lastn1 = str(self.get_Lastn[0]) self.cursor.execute("SELECT BIRTH_DATE FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Birthd = self.cursor.fetchone() self.get_Birthd1 = str(self.get_Birthd[0]) self.cursor.execute("SELECT PLACE_OF_BIRTH FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Placeb = self.cursor.fetchone() self.get_Placeb1 = str(self.get_Placeb[0]) self.cursor.execute("SELECT CIVIL_STATUS FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Civils = self.cursor.fetchone() self.get_Civils1 = str(self.get_Civils[0]) self.cursor.execute("SELECT SEX FROM residents_admin WHERE RFID = %s", str(self.id)) self.get_Sex = self.cursor.fetchone() self.get_Sex1 = str(self.get_Sex[0]) class main_page(Frame): def __init__(self, parent, controller): Frame.__init__(self, parent) self.controller = controller label = Label(self, text="Welcome", font=controller.title_font) label.pack() login_rfid_page = self.controller.get_page("Login_RFID") login_rfid_page.get_data(None) value = login_rfid_page.get_Firstn1 print(value) button1 = Button(self, text="Register User", command=lambda: self.controller.show_frame("Registration_Page_User")) button2 = Button(self, text="Register Admin", command=lambda: self.controller.show_frame("Registration_Page_Admin")) button3 = Button(self, text="Update User", command=lambda: self.controller.show_frame("Update_User")) button4 = Button(self, text="Update Admin", command=lambda: self.controller.show_frame("Update_Admin")) button1.pack() button2.pack() button3.pack() button4.pack()

Exception in Tkinter callback Traceback (most recent call last): File "/usr/lib/python3.7/tkinter/__init__.py", line 1705, in __call__ return self.func(*args) File "/home/pi/Thesis/qweqweqweq.py", line 85, in login_RFID self.controller.show_frame("main_page") File "/home/pi/Thesis/qweqweqweq.py", line 45, in show_frame frame = self.frames[page_name] KeyError: 'main_page'

1条回答

网友

1楼 · 发布于 2024-04-26 17:33:54

第一：您必须使用self.id而不是id才能从不同的地方访问id

def login_RFID(self, event):

    self.reader = SimpleMFRC522()
    self.id, self.text = self.reader.read()  # self.id

第二：您必须在main_page中运行此函数才能获得正确的值

    login_rfid_page = self.controller.get_page("Login_RFID")

    login_rfid_page.login_RFID(None)  # run scanner

    value = login_rfid_page.id
    print(value)

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