Python + tkinter simulate "remember me" to automatically log on to the instance code, pythontkinter

Python + tkinter simulate "remember me" to automatically log on to the instance code, pythontkinter

The Code shared in this article is mainly used to simulate the "remember me" Automatic Logon function through Python + tkinter. The details are as follows.

Basic Idea: If a logon succeeds, a temporary file is created to record the relevant information. Each time the program is started, the system tries to automatically obtain and write the information that was successfully logged on last time. This article mainly demonstrates the idea of rewriting based on the actual needs of the system, such as reading the database, verifying that the user name and password are correct, and locally encrypting and storing the user name and password.

Import tkinterimport tkinter. messageboximport osimport OS. path # obtain the temporary Windows folder path = OS. getenv ('temp ') filename = OS. path. join (path, 'info.txt ') # create the application window root = tkinter. tk () # create a tag component labelName = tkinter in the window. label (root, text = 'user Name: ', justify = tkinter. RIGHT, width = 80) labelName. place (x = 10, y = 5, width = 80, height = 20) # create a string variable and a text box component, and set the associated variable varName = tkinter. stringVar (root, value = '') entryName = tkinter. Entry (root, width = 80, textvariable = varName) entryName. place (x = 100, y = 5, width = 80, height = 20) labelPwd = tkinter. label (root, text = 'user Pwd: ', justify = tkinter. RIGHT, width = 80) labelPwd. place (x = 10, y = 30, width = 80, height = 20) # create a Password text box varPwd = tkinter. stringVar (root, value = '') entryPwd = tkinter. entry (root, show = '*', width = 80, textvariable = varPwd) entryPwd. place (x = 100, y = 30, width = 80, height = 20) # try to automatically enter the user name and password try: With open (filename) as fp: n, p = fp. read (). strip (). split (',') varName. set (n) varPwd. set (p) failed T: pass # logon button event handler def login (): # Get username and password name = entryName. get () pwd = entryPwd. get () if name = 'admin' and pwd = '000000': tkinter. messagebox. showinfo (title = 'congratulation ', message =' login successful! ') # Write the login success information to the temporary file with open (filename, 'w') as fp: fp. write (','. join (name, pwd) else: tkinter. messagebox. showerror ('Warning ', message = 'username or password error') # create a button component and set the button event processing function buttonOk = tkinter. button (root, text = 'login', command = Login) buttonOk. place (x = 30, y = 70, width = 50, height = 20) # cancel the event handler def cancel (): # Clear the user name and password varName. set ('') varPwd. set ('') buttonCancel = tkinter. button (root, text = 'cancel', command = Cancel) buttonCancel. place (x = 90, y = 70, width = 50, height = 20) # Start the message loop root. mainloop ()

Demo result:

Summary

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