from tkinter import *
import os
creds = 'tempfile.txt'
def start():
global rootE
rootE = Tk()
rootE.title('welcome')
greeting = Label(rootE, text='What yould you like to do?' )
sign = Button(rootE, text='register', command=Signup)
login = Button(rootE, text='log in', command=Login)
sign.grid(row=1,column=0, stick=W)
login.grid(row=2,column=0, stick=W)
rootE.geometry('200x200')
rootE.mainloop()
def Signup(): # This is the signup definition,
global pwordE
global nameE
global roots
roots = Tk() # This creates the window, just a blank one.
roots.title('Signup') # This renames the title of said window to
'signup'
intruction = Label(roots, text='Please Enter new Credidentials\n') #
This puts a label, so just a piece of text saying 'please enter blah'
intruction.grid(row=0, column=0, sticky=E) # This just puts it in the
window, on row 0, col 0. If you want to learn more look up a tkinter
tutorial :)
nameL = Label(roots, text='New Username: ') # This just does the same as
above, instead with the text new username.
pwordL = Label(roots, text='New Password: ') # ^^
nameL.grid(row=1, column=0, sticky=W) # Same thing as the instruction
var just on different rows. :) Tkinter is like that.
pwordL.grid(row=2, column=0, sticky=W) # ^^
nameE = Entry(roots) # This now puts a text box waiting for input.
pwordE = Entry(roots, show='*') # Same as above, yet 'show="*"' What
this does is replace the text with *, like a password box :D
nameE.grid(row=1, column=1, sticky=W)
pwordE.grid(row=2, column=1, sticky=W)
signupButton = Button(roots, text='Signup', command=FSSignup) # This
creates the button with the text 'signup', when you click it, the command
'fssignup' will run. which is the def
signupButton.grid(columnspan=2, sticky=W)
roots.mainloop() # This just makes the window keep open, we will destroy
it soon
def FSSignup():
with open(creds, 'w') as f: # Creates a document using the variable we
made at the top.
f.write(nameE.get()) # nameE is the variable we were storing the
input to. Tkinter makes us use .get() to get the actual string.
f.write('\n') # Splits the line so both variables are on different
lines.
f.write(pwordE.get()) # Same as nameE just with pword var
f.close() # Closes the file
roots.destroy() # This will destroy the signup window. :)
Login()
def Login():
global pwordEL
global nameEL
global rootA
rootA = Tk() # This now makes a new window.
rootA.title('Login') # This makes the window title 'login'
intruction = Label(rootA, text='Please Login\n') # More labels to tell
us what they do
intruction.grid(sticky=E) # Blahdy Blah
nameL = Label(rootA, text='Username: ') # More labels
pwordL = Label(rootA, text='Password: ') # ^
nameL.grid(row=1, sticky=W)
pwordL.grid(row=2, sticky=W)
nameEL = Entry(rootA) # The entry input
pwordEL = Entry(rootA, show='*')
nameEL.grid(row=1, column=1)
pwordEL.grid(row=2, column=1)
loginB = Button(rootA, text='Login', command=CheckLogin) # This makes
the login button, which will go to the CheckLogin def.
loginB.grid(columnspan=2, sticky=W)
rmuser = Button(rootA, text='Delete User', fg='red', command=DelUser) #
This makes the deluser button. blah go to the deluser def.
rmuser.grid(columnspan=2, sticky=W)
rootA.mainloop()
def CheckLogin():
global rootD
with open(creds) as f:
data = f.readlines() # This takes the entire document we put the
info into and puts it into the data variable
uname = data[0].rstrip() # Data[0], 0 is the first line, 1 is the
second and so on.
pword = data[1].rstrip() # Using .rstrip() will remove the \n (new
line) word from before when we input it
if nameEL.get() == uname and pwordEL.get() == pword: # Checks to see
if you entered the correct data.
rootD = Tk() # Opens new window
rootD.title(':D')
rootD.geometry('200x200') # Makes the window a certain size
menu = Label(rootD, text='Welcome to the menu, please choose an
option:')
Csubject = Button(rootD, text='choose subject',
command=choose_subject)
menu.grid(sticky=W )
Csubject.grid(row=2,column=0, sticky=W)
rootA.destroy()
rootD.mainloop()
else:
r = Tk()
r.title(':(')
r.geometry('200x200')
rlbl = Label(r, text='\n[!] Invalid Login')
rlbl.pack()
r.mainloop()
def choose_subject():
global History
global Music
global ComputerScience
global rootB
rootB = Tk() # This creates the window, just a blank one.
rootB.title('Subject choice') # This renames the title of said window to
'signup'
intruction = Label(rootB, text='Please choose a subject\n') # This puts
a label, so just a piece of text saying 'please enter blah'
intruction.grid(row=0, column=0, sticky=E,) # This just puts it in the
window, on row 0, col 0. If you want to learn more look up a tkinter
tutorial :)
History = Button(rootB, text='History', command=difficulty) # This just
does the same as above, instead with the text new username.
Music = Button(rootB, text='Music', command=difficulty) # ^^
ComputerScience = Button(rootB, text='Computer Science',
command=difficulty)
History.grid(row=1, column=0, sticky=W) # Same thing as the instruction
var just on different rows. :) Tkinter is like that.
Music.grid(row=2, column=0, sticky=W) # ^^
ComputerScience.grid(row=3, column=0, sticky=W)
# This now puts a text box waiting for input.
# Same as above, yet 'show="*"' What this does is replace the text with
*, like a password box :D
roots.mainloop() # This just makes the window keep open, we will destroy
it soon
def difficulty():
global rootC
global Easy
global Medium
global Hard
rootC=Tk()
rootC.title('difficulty level')
instruction = Label(rootC, text='please choose a difficulty level\n')
instruction.grid(row=0, cloumn=0, sticky=W)
Easy = Button(rootC,text='Easy',command=Easy)
Medium = Button(rootC, text='Medium', command=Medium)
Hard = Button(rootC, text='Hard', Command=Hard)
Easy.grid(row=1, column=0,sticky=W)
Medium.grid(row=2, column=0, sticky=W)
Hard.grid(row=3, column=0, sticky=W)
root.mainloop()
def DelUser():
os.remove(creds) # Removes the file
rootA.destroy() # Destroys the login window
Signup() # And goes back to the start!
if os.path.isfile(creds):
Login()
else: # This if else statement checks to see if the file exists. If it does
it will go to Login, if not it will go to Signup :)
Signup()
def History():
global rootE
rootE = Tk() # This creates the window, just a blank one.
rootE.title('History') # This renames the title of said window to
'signup'
intruction = Label(rootE,text='Please Enter new Credidentials\n') #
This puts a label, so just a piece of text saying 'please enter blah'
intruction.grid(row=0, column=0,sticky=E) # This just puts it in the
window, on row 0, col 0. If you want to learn more look up a tkinter
tutorial :)
nameL = Label(rootE, text='New Username: ') # This just does the same
as above, instead with the text new username.
pwordL = Label(rootE, text='New Password: ') # ^^
nameL.grid(row=1, column=0,
sticky=W) # Same thing as the instruction var just on
different
rows. :) Tkinter is like that.
pwordL.grid(row=2, column=0, sticky=W) # ^^
nameE = Entry(roots) # This now puts a text box waiting for input.
pwordE = Entry(roots,
show='*') # Same as above, yet 'show="*"' What this does
is replace the text with *, like a password box :D
nameE.grid(row=1, column=1, sticky=W)
pwordE.grid(row=2, column=1, sticky=W)
signupButton = Button(roots, text='Signup',
command=FSSignup) # This creates the button with
the text 'signup', when you click it, the command 'fssignup' will run. which
is the def
signupButton.grid(columnspan=2, sticky=W)
def Easy():
global rootD
rootD = Tk() # This creates the window, just a blank one.
rootd.title('Easy') # This renames the title of said window to 'signup'
intruction = Label(roots,text='You have chosen easy\n') # This puts a
label, so just a piece of text saying 'please enter blah'
intruction.grid(row=0, column=0,sticky=E)# This just puts it in the
window, on row 0, col 0. If you want to learn more look up a tkinter
tutorial :)
instruction1 = Label(roots,text='what would you like to do a quiz on?')
Historysbh= Label(roots, text='New Username: ') # This just does the
same as above, instead with the text new username.
pwordL = Label(roots, text='New Password: ') # ^^
nameL.grid(row=1, column=0,sticky=W) # Same thing as the instruction
var just on different rows. :) Tkinter is like that.
pwordL.grid(row=2, column=0, sticky=W) # ^^
nameE = Entry(roots) # This now puts a text box waiting for input.
pwordE = Entry(roots,show='*') # Same as above, yet 'show="*"' What
this does is replace the text with *, like a password box :D
nameE.grid(row=1, column=1, sticky=W)
pwordE.grid(row=2, column=1, sticky=W)
signupButton = Button(roots, text='Signup',command=FSSignup) # This
creates the button with the text 'signup', when you click it, the command
'fssignup' will run. which is the def
signupButton.grid(columnspan=2, sticky=W)
嗨，这是我对项目的不完整代码，我只是想知道为什么def启动不会在def注册之前运行。如果您在此处发现任何其他错误，我们将不胜感激！对不起评论，我没有发现它们阻塞，所以我离开了它们。谢谢！ 登录参考源： https://www.youtube.com/watch?v=iCK8adSeG7A
答案 0 :(得分：0)
你永远不会打电话给你的功能......如果你从不打电话，它就不会运行。
如果你想在python文件中运行某些东西，请在顶层添加对该函数的调用。你也可以用这个：
if __name__=='__main__':
# call your start() function here
有关详细信息，请参阅此处：What does if __name__ == "__main__": do?
答案 1 :(得分：0)
尝试在所有defs之后添加以下行。
if __name__=='__main__':
start()
此外，每次调用函数时，都需要后跟括号，例如：
sign = Button(rootE, text='register', command=Signup)
login = Button(rootE, text='log in', command=Login)
应该是：
sign = Button(rootE, text='register', command=Signup())
login = Button(rootE, text='log in', command=Login())