I am trying to create a program that displays a user's username in a tkinter label after he has logged in. I am trying to follow the instructions for creating global variables found on this webpage. Here is my (simplified) setup for the code so far:
config.py (where I keep my global variables):
nameInput = "Name" # default value of nameInput
print nameInput # prints default value of nameInput just to see if it will change
mod.py:
import config
import MySQLdb
import Tkinter as tk
#LOGIN FUNCTION
#Username list
cursor.execute("SELECT Username FROM Student")
username_list = cursor.fetchall()
usernameList = [l[0] for l in username_list]
#Password list
cursor.execute("SELECT Password FROM Student")
password_list = cursor.fetchall()
passwordList = [l[0] for l in password_list]
login_dictionary = dict(zip(usernameList, passwordList))
def loginFunction(c,ue,pwe,mf,sp):
#nameInput = user input from usernameEntry, which is in main.py
config.nameInput = ue.get()
print config.nameInput #prints nameInput again to see if it has changed to user-inputted entry, which it does
#pwInput is user input from pwEntry
pwInput = pwe.get()
#If the username is correct but the password is not...
if config.nameInput in login_dictionary:
if pwInput != login_dictionary[config.nameInput]:
badLoginLabel = tk.Label(mf, text="Invalid Login",
bg="white", fg="red")
badLoginLabel.grid(row=3, column=1)
badLoginLabel.after(3000, badLoginLabel.destroy)
# But if the user name and password are correct...
else:
c.show_frame(sp)
#If the username AND password are incorrect...
else:
badLoginLabel = tk.Label(mf, text="Invalid Login",
bg="white", fg="red")
badLoginLabel.grid(row=3, column=1)
badLoginLabel.after(3000, badLoginLabel.destroy)
main.py:
import config
import mod
import Tkinter as tk
class UserProfile(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self,parent)
header = Header(self, controller)
header.grid(row=0,column=0)
#creates frame for main content
mainFrame = tk.Frame(self, width=windowWidth, height=500, bg="white")
mainFrame.grid(row=3,column=0)
#User Profile Name
profileName = tk.Label(mainFrame, text=config.nameInput,
bg="white", font=("TkDefaultFont", 14),
anchor=tk.W)
profileName.grid(row=0,column=0, padx=5, pady=2, sticky=tk.W)
mainFrame.grid_propagate(False)
*Here is the "login page" in main.py that calls loginFunction:
class LoginPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self,parent)
#creates frame for main content
mainFrame = tk.Frame(self, width=windowWidth, height=500, bg="white")
mainFrame.grid(row=3,column=0)
instructions = tk.Label(mainFrame, text="Login",
bg="white", anchor=tk.W)
instructions.grid(row=0,column=0, padx=10, pady=10, sticky=tk.W)
#Username field
usernameLabel = tk.Label(mainFrame, text="Username:",
bg="white")
usernameLabel.grid(row=1,column=0, padx=10, pady=5)
usernameEntry = tk.Entry(mainFrame, width="20")
usernameEntry.grid(row=1,column=1)
#Password field
pwLabel = tk.Label(mainFrame, text="Password:",
bg="white")
pwLabel.grid(row=2,column=0, padx=10, pady=5)
pwEntry = tk.Entry(mainFrame, width="20", show="*")
pwEntry.grid(row=2,column=1)
#login button
loginButton = tk.Button(mainFrame, text="Login",
command=lambda: mod.loginFunction(controller,usernameEntry,
pwEntry, mainFrame,
StartPage))
loginButton.grid(row=3,column=0)
mainFrame.grid_propagate(False)
My problem is this: the profileName label in main.py will not display the user's username. It will only display the default value, which is "Name" The strange thing is that right after I log in, "print config.nameInput" in mod.py DOES print the username's name. But for some reason it just doesn't display in the label. If you need more information let me know. I really need to solve this problem in order to proceed on my project.
