I can't generate the number because I get the error NameError: name 'z' is not defined.
import tkinter as tk
from random import randint
def randomize():
z.set ( randint(x.get(),y.get()))
root = tk.Tk()
x = tk.IntVar()
y = tk.IntVar()
text= tk.Label(root, text = "press the button for random number")
enterX = tk.Entry(root)
enterY = tk.Entry(root)
button = tk.Button(root, text = "Press here", command=randomize)
result = tk.Label(root,text="Number is:")
number = tk.Label(root, textvariable=z)
text.pack()
enterX.pack()
enterY.pack()
button.pack()
result.pack()
number.pack()
root.mainloop()
I need help to resolve the error
You have 2 problems here.
One. You are missing z = tk.Intvar() in the global namespace.
Two. You need to assign each entry field one of the IntVar()'s.
Keep in mind that you are not validating the entry fields so if someone types anything other than a whole number you will run into an error.
Take a look at this code.
import tkinter as tk
from random import randint
def randomize():
z.set(randint(x.get(),y.get()))
print(z.get()) # added print statement to verify results.
root = tk.Tk()
x = tk.IntVar()
y = tk.IntVar()
z = tk.IntVar() # added IntVar()
text= tk.Label(root, text = "press the button for random number")
enterX = tk.Entry(root, textvariable=x) # added textvariable
enterY = tk.Entry(root, textvariable=y) # added textvariable
button = tk.Button(root, text = "Press here", command=randomize)
result = tk.Label(root,text="Number is:")
number = tk.Label(root, textvariable=z)
text.pack()
enterX.pack()
enterY.pack()
button.pack()
result.pack()
number.pack()
root.mainloop()
Related
from tkinter import ttk, simpledialog
import tkinter as tk
from tkinter import *
root = Tk()
root.resizable(0, 0)
root.title("Sorting and Searching Algorithm")
root.configure(bg='#ff8080')
root.geometry("750x550")
def arrays():
v = IntVar()
for widget in root.winfo_children():
widget.destroy()
def close():
for widget in root.winfo_children():
widget.destroy()
arrays()
titleFrame = Frame(root)
titleFrame.grid(row=0)
radioFrame = Frame(root)
radioFrame.grid(padx=350, pady=100)
inputFrame = tk.Frame(root, bg='#ff8080')
inputFrame.grid()
buttonFrame = Frame(root)
buttonFrame.grid()
Title = tk.Label(titleFrame, bg='#ff8080', text="Enter The Number of Elements In The Array", font="-weight bold")
Title.grid()
global NUMBER_OF_ENTRIES
NUMBER_OF_ENTRIES = Entry(inputFrame)
NUMBER_OF_ENTRIES.grid(row=0, column=1, sticky=E, ipadx=10, ipady=10,padx=10, pady=10)
if NUMBER_OF_ENTRIES == int:
print("Working")
else:
print("Please Enter a Integer Value")
global num
num = 0
#global NUMBER_OF_ENTRIES
#NUMBER_OF_ENTRIES = simpledialog.askinteger("Please Enter", "Enter The Number of Elements In The Array")
global alist
alist = []
for i in range (0, NUMBER_OF_ENTRIES):
num = simpledialog.askinteger("Please Enter" ,"Enter The Entries In Array Element " + str(i))
alist = alist + [ num ]
calculate = ttk.Button(buttonFrame, text="Proceed", command=entries)
calculate.grid(row=4, column=0, sticky=E + S, ipadx=10, ipady=10)
arrays()
root.mainloop()
I am trying to make it so when a user inputs a integer number into the Entry input box it stores into the variable NUMBER_OF_ENTRIES. After it stores it, it then proceeds to use the value in the further conditionals.
But I am getting an issue when I try to compile it.
Because it's not an integer. NUMBER_OF_ENTRIES is of type <class 'tkinter.Entry'>.
The usual way to do this is to associate the entry with a StringVar() which will reflect whatever is typed into the entry.
The text entered into an entry is still text so you'll have to convert it to int explicitly.
See The Tkinter Entry Widget.
So I am writing a Python program in class that uses the Caesar cipher to take a users input and output it as cipher-text. Since i had a lot more time for this project I planned on giving it a GUI in Tkinter. But when I assign the resulted cipher-text to a label it won't display it and keeps it blank. I'm a noob to python and even more to Tkinter so I'm not too keen on being able to fix these issues myself. Here's the code:
import string
import collections
import random
import tkinter
from tkinter import *
from tkinter.ttk import *
root = Tk()
root.title("Encoder")
root.geometry("500x400")
def caesar(rotate_string, number_to_rotate_by):
upper = collections.deque(string.ascii_uppercase)
lower = collections.deque(string.ascii_lowercase)
upper.rotate(number_to_rotate_by)
lower.rotate(number_to_rotate_by)
upper = ''.join(list(upper))
lower = ''.join(list(lower))
return rotate_string.translate(str.maketrans(string.ascii_uppercase, upper)).translate(str.maketrans(string.ascii_lowercase, lower))
def callback():
print (code)
b = Button(root, text="get", width=10, command=callback)
b.pack()
var = StringVar()
e = Entry(root, textvariable = var)
e.pack()
our_string = e.get()
random_number = random.randint(1,25)
code = caesar(our_string, random_number)
l = Label(root, textvariable=code, anchor=NW, justify=LEFT, wraplength=398)
l.pack()
l.place(relx=0.5, rely=0.5, anchor=CENTER)
root.mainloop()
There are several issues with the code you've posted. First and foremost, your callback doesn't do anything besides print the code variable. You need to move your call to caesar and the associated code into the callback, like so
def callback():
global code
our_string = e.get()
random_number = random.randint(1, 25)
code.set(caesar(our_string, random_number))
The second issue that I see is that you need to use a StringVar as the textvariable argument in your Label constructor in order to get the label to update automatically. When all is said and done, my version of your code looks like
import string
import collections
import random
from tkinter import *
from tkinter.ttk import *
root = Tk()
root.title("Encoder")
root.geometry("500x400")
code = StringVar()
code.set('Hello')
def caesar(rotate_string, number_to_rotate_by):
upper = collections.deque(string.ascii_uppercase)
lower = collections.deque(string.ascii_lowercase)
upper.rotate(number_to_rotate_by)
lower.rotate(number_to_rotate_by)
upper = ''.join(list(upper))
lower = ''.join(list(lower))
return rotate_string.translate(str.maketrans(string.ascii_uppercase, upper)).translate(str.maketrans(string.ascii_lowercase, lower))
def callback():
global code
our_string = e.get()
random_number = random.randint(1, 25)
code.set(caesar(our_string, random_number))
b = Button(root, text="get", width=10, command=callback)
b.pack()
var = StringVar()
e = Entry(root, textvariable=var)
e.pack()
l = Label(root, textvariable=code, anchor=NW, justify=LEFT, wraplength=398)
l.pack()
l.place(relx=0.5, rely=0.5, anchor=CENTER)
root.mainloop()
This seems to do what you'd expect.
I am trying to make a GUI where as soon as the user inputs an integer into a ttk.entry field, that many checkbuttons need to appear below it. For example, if they put "5" into the entry widget, 5 check buttons need to appear below the entry field.
Edit:
What I ended up using:
self.number_of_stages = tk.IntVar()
self.check_box_dict={}
self.num_of_stages={}
self.stagetempvar={}
self.equipment_widgets={}
def centrifugal_compressor_widgets(self):
self.equipment_widgets.clear()
self.equipment_widgets["NumOfStagesLabelCentComp"]=tk.Label(self.parent, text="Number of Stages:", bg="white")
self.equipment_widgets["NumOfStagesLabelCentComp"].place(relx=0.5, y=260, anchor="center")
self.equipment_widgets["NumOfStagesEntryCentComp"]=ttk.Entry(self.parent, textvariable=self.number_of_stages)
self.equipment_widgets["NumOfStagesEntryCentComp"].place(relx=0.5, y=290, anchor="center")
def OnTraceCentComp(self, varname, elementname, mode):
for key in self.check_box_dict:
self.check_box_dict[key].destroy()
try:
if self.number_of_stages.get() <=15 :
i=1
self.stagetempvar.clear()
while i <= self.number_of_stages.get():
self.stagetempvar[i]=tk.StringVar()
self.stagetempvar[i].set("Closed")
self.check_box_dict[i]=ttk.Checkbutton(self.parent, text=i, offvalue="Closed", onvalue="Open",variable=self.stagetempvar[i])
self.check_box_dict[i].place(relx=(i*(1/(self.number_of_stages.get()+1))), y=360, anchor="center")
i+=1
except:
pass
take a look at the below and let me know what you think...
A very ugly, super basic example:
from Tkinter import *
root = Tk()
root.geometry('200x200')
root.grid_rowconfigure(0, weight = 1)
root.grid_columnconfigure(0, weight = 1)
win1 = Frame(root, bg= 'blue')
win1.grid(row=0, column=0, sticky='news')
number = IntVar()
entry = Entry(win1, textvariable = number)
entry.pack()
confirm = Button(win1, text = 'Press to create widgets...', command = lambda:create_widgets(number.get()))
confirm.pack()
def create_widgets(number):
for n in range(0,number):
Checkbutton(win1, text = 'Checkbutton number : %s' % n).pack()
root.mainloop()
I am using Tkinter in python 3.4 to make a text based game, and I cannot figure out how to get a string from an Entry widget, it just returns Py_Var#, # being a number. I have looked at answers to similar questions, but none of them quite line up with what I need and have. Here's the relevant pieces of code:
from tkinter import *
win = Tk()
win.geometry("787x600")
playername = StringVar()
def SubmitName():
playername.get
#messagebox.showinfo("Success", playername)
print(playername)
frame3 = Frame(win)
frame3.pack()
label1 = Label(frame3, text="You awaken in a room, with no memories of yourself or your past. ")
label2 = Label(frame3, text="First, how about you give yourself a name:")
label1.config(font=("Courier", 11))
label2.config(font=("Courier", 11))
entry1 = Entry(frame3, textvariable=playername)
entry1.config(font=("Courier", 11))
label1.grid(row=0, column=0, columnspan=3)
label2.grid(row=1, column=0)
entry1.grid(row=1, column=1)
bnamesub= Button(frame3, text="Submit", command=lambda: SubmitName())
bnamesub.grid()
win.mainloop()
Also, first time using stackoverflow and its reading weird but w/e.
You have two mistakes in SubmitName().
First, you need to get the text like this:
txt = playername.get()
Then you need to print that txt:
print(txt)
By mistake you printed the StringVar variable itself.
from tkinter import *
import pickle
win = Tk()
win.geometry("787x600")
def SubmitName():
playername = entry1.get()
messagebox.showinfo("Success", playername)
print(playername)
frame3 = Frame(win)
frame3.grid()
label1 = Label(frame3, text="You awaken in a room, with no memories of yourself or your past. ")
label2 = Label(frame3, text="First, how about you give yourself a name:")
label1.config(font=("Courier", 11))
label2.config(font=("Courier", 11))
#name entered is a StringVar, returns as Py_Var7, but I need it to return the name typed into entry1.
entry1 = Entry(frame3)
entry1.config(font=("Courier", 11))
label1.grid(row=0, column=0, columnspan=3)
label2.grid(row=1, column=0)
entry1.grid(row=1, column=1)
bnamesub= Button(frame3, text="Submit", command=lambda: SubmitName())
bnamesub.grid()
What I changed:
-deleted playername = StringVar(). We don't really need it;
-changed inside the function: changed playername.get to playername = entry1.get();
-added frame3.grid() (without geometry managment, widgets cannot be shown on the screen.);
-also, a little edit: in Python, comments are created with # sign. So I changed * to #.
I was happy to find a solution here, but all these answers "as it is" are not working with my setting, python3.8, pycharm 2018.2
So if anyone could answer this, it seems that entry1.get() cannot be used as a string. I first wanted to append it in a list, and I did a more simple version to point out the trouble :
from tkinter import *
import pickle
win = Tk()
win.geometry("300x300")
#playername = StringVar()
def SubmitName():
labell = Label(win, text="Little tryup").grid()
playername = entry1.get()
# result about line 11: 'NoneType' object has no attribute 'get'
labelle = Label(win, text=playername).grid()
# print(txt)
label1 = Label(win, text="Enter a name:").grid()
entry1 = Entry(win).grid()
boutonne = Button(win, text="label-it!", command=lambda: SubmitName())
boutonne.grid()
win.mainloop()
I'm trying to put old school sequential Tkinter code into class structure code.
So let's consider this example :
import Tkinter as Tk
def StartProcess():
print Text_1_Var.get(), Text_2_Var.get(), Text_3_Var.get()
if __name__ == '__main__':
MainFrame = Tk.Tk()
Tk.Button(MainFrame , text = "Start",command=StartProcess).grid(column=2, row=0)
Tk.Label(MainFrame , text = "1").grid(column=1, row=1)
Text_1_Var = Tk.StringVar()
Text_1 = Tk.Entry(MainFrame , width=40, textvariable = Text_1_Var).grid(column=2, row=1)
Tk.Label(MainFrame , text = "2").grid(column=1, row=2)
Text_2_Var = Tk.StringVar()
Text_2 = Tk.Entry(MainFrame , width=40, textvariable = Text_2_Var).grid(column=2, row=2)
Tk.Label(MainFrame , text = "3").grid(column=1, row=3)
Text_3_Var = Tk.StringVar()
Text_3 = Tk.Entry(MainFrame , width=40, textvariable = Text_3_Var).grid(column=2, row=3)
# etc
MainFrame.mainloop()
On press "Start" it displays values of Entry from 1 to 3.
Now i recode it as follow :
import Tkinter as Tk
def StartProcess():
print "???"
class NewEntry(Tk.Frame):
def __init__(self,master=None,idnumber=None):
Tk.Frame.__init__(self,master)
self.pack(side=Tk.TOP)
self.CreateWidgets(idnumber)
def CreateWidgets(self,idnumber):
Tk.Label(master=self, text = idnumber).grid(column=1, row=0)
self.Text_Var = Tk.StringVar()
self.Text = Tk.Entry(master=self, width=40, textvariable = self.Text_Var).grid(column=2, row=0)
if __name__ == '__main__':
MainFrame = Tk.Tk()
Tk.Button(master=MainFrame,text="Start", command=StartProcess).pack()
for i in range (1, 4): # or more
NewEntry(master=MainFrame,idnumber=str(i))
MainFrame.mainloop()
GUI are both identical. I want to get the same result but i don't know where my function StartProcess should take place and how extract value of each self.Text_Var instance.
It's not enough to create a NewEntry object; you need to save references to them so you can access them later (e.g., from StartProcess).
entries = []
for i in range (1, 4): # or more
e = NewEntry(master=MainFrame,idnumber=str(i))
entries.append(e)
# Or more simply,
# entries = [NewEntry(master=MainFrame, idnumber=str(i)) for i in range(1,4)]
Then, StartProcess becomes something like
def StartProcess():
strings = [x.Text_Var.get() for x in entries]
print " ".join(strings)