python UI编程 使用tkinter框架 实现用户登录与注册及其切换

python UI编程 使用tkinter框架 实现用户登录与注册及其切换

使用tkinter框架进行UI编程

首先是两个要导入的类
import tkinter
import tkinter.messagebox

登录界面login的类

class Login(object):
    def __init__(self, root):
        self.reg = ''
        self.root = root
        self.varName = tkinter.StringVar(value='')
        self.varPwd = tkinter.StringVar(value='')

        self.labelName = tkinter.Label(self.root, text='用户名:', justify=tkinter.RIGHT, width=80)
        self.labelPwd = tkinter.Label(self.root, text='密码:', justify=tkinter.RIGHT, width=80)
        self.entryName = tkinter.Entry(self.root, width=80, textvariable=self.varName)
        self.entryPwd = tkinter.Entry(self.root, width=80, show='*', textvariable=self.varPwd)

        self.buttonOk = tkinter.Button(self.root, text='登录', command=self.login)
        self.buttonCancel = tkinter.Button(self.root, text='取消', command=self.cancel)
        self.buttonExchanage = tkinter.Button(self.root, text='注册', command=self.exchange)
        
    def arrange(self):                                #用place函数给各个元素定位
        self.labelName.place(x=10, y=5, width=80, height=20)
        self.labelPwd.place(x=10, y=30, width=80, height=20)
        self.entryName.place(x=100, y=5, width=80, height=20)
        self.entryPwd.place(x=100, y=30, width=80, height=20)
        self.buttonOk.place(x=30, y=70, width=50, height=20)
        self.buttonCancel.place(x=90, y=70, width=50, height=20)
        self.buttonExchanage.place(x=150, y=70, width=50, height=20)

    def login(self):
        name = self.entryName.get()
        pwd = self.entryPwd.get()
        if name == '我' and pwd == '123456':
            tkinter.messagebox.showinfo(title='Python tkinter', message='Ok')
        else:
            tkinter.messagebox.showerror('Python tkinter', message='Error')

    def cancel(self):
        self.varName.set('')
        self.varPwd.set('')

    def disappear(self):                                #删除页面上的所有架构 但保留root
        self.labelName.destroy()
        self.entryName.destroy()
        self.labelPwd.destroy()
        self.entryPwd.destroy()
        self.buttonOk.destroy()
        self.buttonCancel.destroy()
        self.buttonExchanage.destroy()

    def exchange(self):                            #为实现登录注册页面转化而准备的
        self.disappear()
        self.reg = Register(self.root)
        self.reg.arrange()
        tkinter.mainloop()

注册页面Resign的类

class Register(object):
    def __init__(self, root):
        self.log = ''
        self.root = root
        self.varName = tkinter.StringVar(value='')
        self.varPwd1 = tkinter.StringVar(value='')
        self.varPwd2 = tkinter.StringVar(value='')

        self.labelName = tkinter.Label(self.root, text='用户名：', justify=tkinter.RIGHT, width=80)
        self.labelPwd1 = tkinter.Label(self.root, text='密码:', justify=tkinter.RIGHT, width=80)
        self.labelPwd2 = tkinter.Label(self.root, text='重复密码：', justify=tkinter.RIGHT, width=80)
        self.entryName = tkinter.Entry(self.root, width=80, textvariable=self.varName)
        self.entryPwd1 = tkinter.Entry(self.root, width=80, show='*', textvariable=self.varPwd1)
        self.entryPwd2 = tkinter.Entry(self.root, width=80, show='*', textvariable=self.varPwd2)

        self.bottonsubmit = tkinter.Button(self.root, text='提交', command=self.register)
        self.bottonlogin = tkinter.Button(self.root, text='返回登录', command=self.exchange)
    def register(self):
        name = self.entryName.get()
        pwd1 = self.entryPwd1.get()
        pwd2 = self.entryPwd2.get()
        if pwd2 is '' or pwd1 is '' or name is '':
            tkinter.messagebox.showinfo(title='提示', message='请输入完整信息！')
        elif pwd2 == pwd1:
            tkinter.messagebox.showinfo(title='提示', message='注册成功！')
        else:
            tkinter.messagebox.showinfo(title='提示', message='密码不一致，请重新输入。')
            self.cancel()
            
    def cancel(self):
        self.varPwd1.set('')
        self.varPwd2.set('')

    def arrange(self):
        self.labelName.place(x=10, y=5, width=80, height=20)
        self.entryName.place(x=100, y=5, width=80, height=20)
        self.labelPwd1.place(x=10, y=30, width=80, height=20)
        self.entryPwd1.place(x=100, y=30, width=80, height=20)
        self.labelPwd2.place(x=10, y=55, width=80, height=20)
        self.entryPwd2.place(x=100, y=55, width=80, height=20)
        self.bottonsubmit.place(x=30, y=90, width=50, height=20)
        self.bottonlogin.place(x=90, y=90, width=50, height=20)

    def disappear(self):
        self.labelName.destroy()
        self.entryName.destroy()
        self.labelPwd1.destroy()
        self.entryPwd1.destroy()
        self.labelPwd2.destroy()
        self.entryPwd2.destroy()
        self.bottonsubmit.destroy()
        self.bottonlogin.destroy()

    def exchange(self):
        self.disappear()
        self.log = Login(self.root)
        self.log.arrange()
        tkinter.mainloop()

用于调用

def main():
    root = tkinter.Tk()
    root.title('Page')
    root.geometry('200x200+20+20')
    root.resizable(1,0)
    root_login = Login(root)
    root_login.arrange()
    root.mainloop()

if __name__ == '__main__':
    main()

本人还是小白入门，如果代码有问题，欢迎指正。
谢谢各位！