import tkinter

myGUI = tkinter.Tk()
myGUI.title("Gym Application Project")
myGUI.geometry("500x300")
myGUI.config(bg="#a1dbcd")
myGUI.resizable(width=False, height=False)

UserName = tkinter.Label(myGUI,
                         text="Username",
                         bg="#a1dbcd",
                         font=15)
UserName.pack()
UserName.place(x=10,y=20)

UserName_Entry = tkinter.Entry(myGUI,
                               fg="black",
                               relief="groove",
                               width=25,
                               font=("verdana",10),
                               highlightthickness=1,
                               highlightbackground="black",
                               textvariable=())
UserName_Entry.pack()
UserName_Entry.place(x=10,y=40)

Password = tkinter.Label(myGUI,
                         text="Password",
                         bg="#a1dbcd",
                         font=15)
Password.pack()
Password.place(x=10,y=80)

Password_Entry = tkinter.Entry(myGUI,
                               fg="black",
                               show='*',
                               relief="groove",
                               width=25,
                               font=("verdana",10),
                               highlightthickness=1,
                               highlightbackground="black",
                               textvariable=())
Password_Entry.pack()
Password_Entry.place(x=10,y=100)

def Is_Valid():
    UsernameValidity=UserName_Entry.get()
    PasswordValidity=Password_Entry.get()
    if (UsernameValidity=='admin') and (PasswordValidity=='computing'):
        print (" One of the accounts has successfully logged in ")
        PasswordWrongText.config(text=" You have logged in! ", fg="black", highlightthickness=1)
    else:
        print (" One of the accounts inputted the wrong credentials! ")
        PasswordWrongText.config(text=" Invalid username or Password! ", fg="black", highlightthickness=1)

def Close_Application():
    myGUI.destroy()
    exit()

PasswordWrongText = tkinter.Label(myGUI,
                                  font=("verdana", 10),
                                  bg="#a1dbcd")

PasswordWrongText.place(x=10,y=140)

Login_Button = tkinter.Button(myGUI,
                              text="Login",
                              bg="snow",
                              relief="sunken",
                              width=20,
                              font=("verdana", 10),
                              highlightthickness=2,
                              command=Is_Valid)
Login_Button.pack()
Login_Button.place(x=10, y=260)
Exit_Button = tkinter.Button(myGUI,
                             text="Exit",
                             bg="snow",
                             relief="sunken",
                             width=20,
                             font=("verdana", 10),
                             highlightthickness=2,
                             command=Close_Application)
Exit_Button.pack()
Exit_Button.place(x=320,y=260)

myGUI.mainloop()