def cancelLogin(self):
    msg=messagebox.askyesno("login","Are you Sure?")
    if(msg):
        exit()

def save_info(self):
    m=0
    **userid_info=self.txtuser.get();
    password_info=self.txtpassword.get();**
    lines=[]

    with open ("C:\Users\501446\Downloads\user.txt", 'rt') as in_file:
        for line in in_file:
            lines.append(line)
            if(userid_info==line or password_info==line):
                m+=1
    if(m==2):
        gh=messagebox.showinfo("login","login is succesful")
        exit()
    else:
        gh=messagebox.showinfo("Error","check your password")


def __init__(self, top=None):
    '''This class configures and populates the toplevel window.
       top is the toplevel containing window.'''
    _bgcolor = '#d9d9d9'
    _fgcolor = '#000000'
    _compcolor = '#d9d9d9'
    _ana1color = '#d9d9d9'
    _ana2color = '#d9d9d9'

    top.geometry("632x360+781+199")
    top.title("LOGIN page")
    top.configure(background="darkgrey")
    top.configure(highlightbackground="#d9d9d9")
    top.configure(highlightcolor="black")

    self.label1 = Label(top)
    self.label1.place(relx=0.222, rely=0.25, height=26, width=54)
    self.label1.configure(activebackground="#f9f9f9")
    self.label1.configure(activeforeground="black")
    self.label1.configure(background="white")
    self.label1.configure(disabledforeground="#a3a3a3")
    self.label1.configure(foreground="#000000")
    self.label1.configure(highlightbackground="#d9d9d9")
    self.label1.configure(highlightcolor="black")
    self.label1.configure(text='''User ID''')

    self.label2 = Label(top)
    self.label2.place(relx=0.222, rely=0.417, height=26, width=68)
    self.label2.configure(activebackground="#f9f9f9")
    self.label2.configure(activeforeground="black")
    self.label2.configure(background="white")
    self.label2.configure(disabledforeground="#a3a3a3")
    self.label2.configure(foreground="#000000")
    self.label2.configure(highlightbackground="#d9d9d9")
    self.label2.configure(highlightcolor="black")
    self.label2.configure(text='''Password''')

    self.btnlogin = Button(top)
    self.btnlogin.place(relx=0.316, rely=0.611, height=33, width=49)
    self.btnlogin.configure(activebackground="#d9d9d9")
    self.btnlogin.configure(activeforeground="#000000")
    self.btnlogin.configure(background="#6AE83A")
    self.btnlogin.configure(disabledforeground="#a3a3a3")
    self.btnlogin.configure(foreground="#000000")
    self.btnlogin.configure(highlightbackground="#d9d9d9")
    self.btnlogin.configure(highlightcolor="black")
    self.btnlogin.configure(pady="0")
    self.btnlogin.configure(text='''Login''')
    self.btnlogin.configure(command=self.save_info)

    self.btnregister = Button(top)
    self.btnregister.place(relx=0.4800, rely=0.800, height=33, width=49)
    self.btnregister.configure(activebackground="#d9d9d9")
    self.btnregister.configure(activeforeground="#000000")
    self.btnregister.configure(background="#57C4B9")
    self.btnregister.configure(disabledforeground="#a3a3a3")
    self.btnregister.configure(foreground="#000000")
    self.btnregister.configure(highlightbackground="#d9d9d9")
    self.btnregister.configure(highlightcolor="black")
    self.btnregister.configure(pady="0")
    self.btnregister.configure(text='''Register''')
    self.btnregister.configure(command=self.register_1);


    self.btncancel = Button(top)
    self.btncancel.place(relx=0.600, rely=0.611, height=33, width=54)
    self.btncancel.configure(activebackground="#d9d9d9")
    self.btncancel.configure(activeforeground="#000000")
    self.btncancel.configure(background="#6AE83A")
    self.btncancel.configure(disabledforeground="#a3a3a3")
    self.btncancel.configure(foreground="#000000")
    self.btncancel.configure(highlightbackground="#d9d9d9")
    self.btncancel.configure(highlightcolor="black")
    self.btncancel.configure(pady="0")
    self.btncancel.configure(text='''Cancel''')
    self.btncancel.configure(command=self.cancelLogin);

    self.txtuser = Text(top)
    self.txtuser.place(relx=0.411, rely=0.222, relheight=0.094
            , relwidth=0.402)
    self.txtuser.configure(background="gray")
    self.txtuser.configure(font="Century  22 bold ")
    self.txtuser.configure(foreground="black")
    self.txtuser.configure(highlightbackground="#d9d9d9")
    self.txtuser.configure(highlightcolor="black")
    self.txtuser.configure(insertbackground="black")
    self.txtuser.configure(selectbackground="#c4c4c4")
    self.txtuser.configure(selectforeground="black")
    self.txtuser.configure(width=254)
    self.txtuser.configure(wrap=WORD)


    password=StringVar()
    self.txtpassword =Entry(root,textvariable=password,show="*")
    self.txtpassword.place(relx=0.411, rely=0.389, relheight=0.094
            , relwidth=0.402)
    self.txtpassword.configure(background="gray")
    self.txtpassword.configure(font="Century  22 bold ")
    self.txtpassword.configure(foreground="black")
    self.txtpassword.configure(highlightbackground="#d9d9d9")
    self.txtpassword.configure(highlightcolor="black")
    self.txtpassword.configure(insertbackground="black")
    self.txtpassword.configure(selectbackground="#c4c4c4")
    self.txtpassword.configure(selectforeground="black")
    self.txtpassword.configure(width=254)


    self.menubar = Menu(top,font="TkMenuFont",bg=_bgcolor,fg=_fgcolor)
    top.configure(menu = self.menubar)