我刚刚创建了一个tkinter，您在其中创建了用户名和密码，而不是登录并可以创建或查看添加到列表中的项目。该程序的用户名和密码部分很好，但是当您进入标签添加部分时，它不会添加列表标签。
import java.io.*;
import java.net.*;
import java.nio.charset.StandardCharsets;
public class TestConn {
public static void downloadFromUrl(final URL url) throws IOException {
long t0 = System.currentTimeMillis();
URLConnection conn = url.openConnection();
System.out.println("conn msecs: " +
(System.currentTimeMillis() - t0) + " url=" + url);
System.out.println("=====================================");
try (BufferedReader in = new BufferedReader(
new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8))) {
String line;
int cont = 0;
while ((line = in.readLine()) != null) {
if (cont++ < 4)
System.out.println(line);
}
if(cont >=4)
System.out.printf("== total lines: %d (%d skipped)\n",cont,cont-4);
System.out.println("==============done=======================");
}
}
public static void testConn(String urls) {
try {
long t0 = System.currentTimeMillis();
downloadFromUrl(new URL(urls));
System.out.println("Done , total time msecs: " +
(System.currentTimeMillis() - t0));
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
testConn("https://www.example.com/"); // breakpoint here, step-over with F6
System.out.println("bye");
}
}
显示的错误是
from tkinter import *
import os
creds = 'tempfile.temp' # This just sets the variable creds to 'tempfile.temp'
def Signup(): # This is the signup definition,
global pwordE # These globals just make the variables global to the entire script, meaning any definition can use them
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) # You know what this does now :D
pwordE.grid(row=2, column=1) # ^^
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() # This will move us onto the login definition :D
def Login():
global nameEL
global pwordEL # More globals :D
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():
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.
r = Tk() # Opens new window
r.title(':D')
r.geometry('250x100') # Makes the window a certain size
stuff = []
def addListItem():
josh = entry100.get()
stuff.append(josh)
labels = Label(re, label=stuff)
labels.pack()
rlbl = Label(r, text='\n[+] Logged In') # "logged in" label
rlbl.pack() # Pack is like .grid(), just different
rlbl = Label(r, text='\nWelcome back, ' + nameEL.get())
rlbl.pack()
rlbl = Label(r, text='\nThis is your list: ')
if len(stuff) == 0:
re = Tk()
re.title('suh g, no stuff')
re.geometry('300x300')
rlbl = Label(re, text='There is no items in this lists directory')
rlbl.pack()
entry100 = Entry(re)
entry100.pack()
butt68 = Button(re, text="Create List Item", command=addListItem)
butt68.pack()
if len(stuff) != 0:
re = Tk()
re.title('items of your list')
re.geometry('300x300')
rlbl = Label(re, text=stuff)
rlbl.pack()
rlbl = Label
r.mainloop()
else:
r = Tk()
r.title(':D')
r.geometry('150x50')
rlbl = Label(r, text='\n[!] Invalid Login')
rlbl.pack()
r.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()
我认为该错误与labels = Label（re，text = stuff）有关，因为我将整个列表放在应该只有一个文本的地方。如果有人知道如何解决此问题，请与我分享。
答案 0 :(得分：1)
就像错误告诉您一样，label不是Label支持的内容。您需要使用text。