This is my code :
import sys
from tkinter import *
#first new screen
def next_screen(names):
for widget in names:
widget.place_forget()
buttonhyp = Button (text = "button1",fg = "blue",command = hypoténusegetdef())
buttonhyp.grid (row = 1,column = 2)
def forget_page1():
widgets = [mLabel1, button]
next_screen(widgets)
################################################################################
def hypténusegetdef ():
widgets1 = [buttonhyp]
nextscreen1(widgets1)
def next_screen(names):
for widget in names:
widget.place_forget()
hyplabel1 = Label (text = "This is my text")
#first page things
mGui = Tk ()
mGui.geometry("600x600+545+170")
mGui.title("MyMathDictionary")
mLabel1 = Label (text = "Welcome to MyMathDictionary. Press Next to continue.",
fg = "blue",bg = "white")
mLabel1.place (x= 150,y = 200)
button = Button (text = "Next", command = forget_page1 )
button.place(x = 275,y = 230)
mGui.mainloop()
What i'm trying to do is to open the program and get the user to click on "Next" and then to show another button which is called "button1" and when the user clicks on "button1" it shows up a text called which says "This is my text" in my code.But when i run it i click on "Next" and nothing shows up i checked and re- checked but nothing seems to work.Any help would be appreciated.
#
I am not an expert, but i will give it a try.
Firstly, import sys is not necessary. And importing all the objects from tkinter module using from tkinter import* is not recommended. You should use import tkinter or import tkinter as tk to avoid unexepcted consequences.
You have 2 functions with the same name. next_screen(names) which should not happen.
Instead of using widgets = [mLabel1, button] to hide the widgets, you should put them in a frame so that you can use winfo_children() to find all the children widgets.
You should put the parent widget name when you create buttons and labels. for example,
import tkinter as tk
root = tk.Tk()
mylabel = tk.Label(root,text='this is a label')
mylabel.pack()
root.mainloop()
In your first next_screen(names) function , you used grid method to display the button. You should not mix the grid method and place method.
This is something i came up with
import tkinter as tk
def Screen_1():
Clear(myframe)
mybutton2= tk.Button(myframe,text = "Button1", command = Screen_2)
mybutton2.pack()
def Screen_2():
Clear(myframe)
mylabel2= tk.Label(myframe,text = "This is my text",fg = "blue",bg = "white")
mylabel2.pack(side='top')
def Clear(parent):
for widget in parent.winfo_children():
widget.pack_forget()
root =tk.Tk()
myframe=tk.Frame(root)
myframe.pack()
mylabel1= tk.Label(myframe,text = "Welcome to MyMathDictionary. Press Next to continue.",fg = "blue",bg = "white")
mylabel1.pack(side='top')
mybutton1= tk.Button(myframe,text = "Next", command = Screen_1)
mybutton1.pack(side='bottom')
root.mainloop()
hope it helps!
Related
I have a python script for teachers that works very well on my terminal and I'm trying to use Tkinter so I can share this script with other people. In the script, the user uploads a file and other information to an SQLite database.
Below is part of the script that shows just the content for the 1st tab (of 3). The problem is that when people interact with the database the tab needs to get refreshed to show something has happened and that the list of files in the database has changed.
Everything I've read shows you need a button to refresh. But that is not user-friendly. What people want to do is upload a file and then see that file in the list. Is this possible with Tkinter and if so how?
class AppWindow():
my_list = [4]
def __init__(self, parent):
global my_list
# Create the window
self.window = parent
self.window.geometry("700x600")
#self.center_window()
self.window.title("Test app")
# Create a text label and place it in the window
self.hello_label = tk.Label(self.window, text="Hello world!")
self.hello_label.place(x=20, y=20)
# Create 3 tabs
self.tab_container = tk.Frame(self.window)
self.tab_container.place(x=0,y=0,width=700,height=400)
self.tabs = ttk.Notebook(self.tab_container)
self.tab_2 = tk.Frame(self.tabs)
self.tabs.add(self.tab_2, text="Parameters")
self.tabs.place(x=0,y=0,height=400,width=700)
# Content for tab 2
self.label2 = tk.Label(self.tab_2, text="")
self.label201=tk.Label(self.tab_2, text="Put in your target GPA")
self.label201.place(x=50, y=50)
btn1 = tk.Button(self.tab_2,text="Target GPA", command=self.getGPA)
btn1.place(x=50, y=80)
for lst in self.my_list:
btn99=tk.Button(self.tab_2,text=lst)
btn99.grid()
def getGPA(self):
userInput = sd.askstring('User Input','Enter target GPA')
self.my_list.append(userInput)
if __name__ == "__main__":
root = tk.Tk()
app = AppWindow(root)
root.mainloop()
This is merely a guess because of the all the reasons I've already mentioned in comments under your question. Generally speaking, to update or what you call "refresh" a tab requires adding, changing, or deleting the widgets you put on it.
The code below is based what's currently in your code. Every time the Target GP button is clicked another Button is added to the self.tab_2 frame as well as appended to my_list. Changing the widgets doesn't have to be triggered by clicking on a button, it could be the result of some other event (such as the completion of a file upload in the background for example).
import tkinter as tk
import tkinter.ttk as ttk
import tkinter.simpledialog as sd
class AppWindow():
def __init__(self, parent):
# Create the window
self.window = parent
self.window.geometry("700x600")
#self.center_window()
self.window.title("Test app")
# Create and initialize data list.
self.my_list = [4]
# Create a text label and place it in the window
self.hello_label = tk.Label(self.window, text="Hello world!")
self.hello_label.place(x=20, y=20)
# Create 3 tabs
self.tab_container = tk.Frame(self.window)
self.tab_container.place(x=0, y=0, width=700, height=400)
self.tabs = ttk.Notebook(self.tab_container)
self.tab_2 = tk.Frame(self.tabs)
self.tabs.add(self.tab_2, text="Parameters")
self.tabs.place(x=0, y=0, height=400, width=700)
# Content for tab 2
self.label201 = tk.Label(self.tab_2, text="Put in your target GPA")
self.label201.place(x=50, y=50)
btn1 = tk.Button(self.tab_2, text="Target GPA", command=self.getGPA)
btn1.place(x=50, y=80)
# Create a Button for each item currently in list.
for item in self.my_list:
btn = tk.Button(self.tab_2, text=item)
btn.grid()
def getGPA(self):
userInput = sd.askstring('User Input', 'Enter target GPA')
if userInput is None: # User closed the dialog or clicked Cancel?
return
self.my_list.append(userInput)
btn = tk.Button(self.tab_2, text=userInput) # Create another Button.
btn.grid()
if __name__ == "__main__":
root = tk.Tk()
app = AppWindow(root)
root.mainloop()
I want to add a hover feature on a Tkinter button where if the user hovers the mouse cursor then description text displays. I also want to add some delay for that description to appear so that it would not be intrusive.
I can try using the "<Enter>" and "<Leave>" binding of the button to a function and make some "Label" appear in some corner of the app. But this approach may not be the most elegant.
This can be done very easily with tkinter. By adding Enter and Leave events to whatever you want to add a tooltip to, we can easily show/hide whatever we want, wherever we want. In my example I use a stripped-down tk.Toplevel so we can have a simple fade animation, and the tooltip wont be confined to the root window.
#widgets.py
import tkinter as tk, tkinter.ttk as ttk
from typing import Union
Widget = Union[tk.Widget, ttk.Widget]
class ToolTip(tk.Toplevel):
#amount to adjust fade by on every animation frame
FADE_INC:float = .07
#amount of milliseconds to wait before next animation state
FADE_MS :int = 20
def __init__(self, master, **kwargs):
tk.Toplevel.__init__(self, master)
#make window invisible, on the top, and strip all window decorations/features
self.attributes('-alpha', 0, '-topmost', True)
self.overrideredirect(1)
#style and create label. you can override style with kwargs
style = dict(bd=2, relief='raised', font='courier 10 bold', bg='#FFFF99', anchor='w')
self.label = tk.Label(self, **{**style, **kwargs})
self.label.grid(row=0, column=0, sticky='w')
#used to determine if an opposing fade is already in progress
self.fout:bool = False
def bind(self, target:Widget, text:str, **kwargs):
#bind Enter(mouseOver) and Leave(mouseOut) events to the target of this tooltip
target.bind('<Enter>', lambda e: self.fadein(0, text, e))
target.bind('<Leave>', lambda e: self.fadeout(1-ToolTip.FADE_INC, e))
def fadein(self, alpha:float, text:str=None, event:tk.Event=None):
#if event and text then this call came from target
#~ we can consider this a "fresh/new" call
if event and text:
#if we are in the middle of fading out jump to end of fade
if self.fout:
self.attributes('-alpha', 0)
#indicate that we are fading in
self.fout = False
#assign text to label
self.label.configure(text=f'{text:^{len(text)+2}}')
#update so the proceeding geometry will be correct
self.update()
#x and y offsets
offset_x = event.widget.winfo_width()+2
offset_y = int((event.widget.winfo_height()-self.label.winfo_height())/2)
#get geometry
w = self.label.winfo_width()
h = self.label.winfo_height()
x = event.widget.winfo_rootx()+offset_x
y = event.widget.winfo_rooty()+offset_y
#apply geometry
self.geometry(f'{w}x{h}+{x}+{y}')
#if we aren't fading out, fade in
if not self.fout:
self.attributes('-alpha', alpha)
if alpha < 1:
self.after(ToolTip.FADE_MS, lambda: self.fadein(min(alpha+ToolTip.FADE_INC, 1)))
def fadeout(self, alpha:float, event:tk.Event=None):
#if event then this call came from target
#~ we can consider this a "fresh/new" call
if event:
#indicate that we are fading out
self.fout = True
#if we aren't fading in, fade out
if self.fout:
self.attributes('-alpha', alpha)
if alpha > 0:
self.after(ToolTip.FADE_MS, lambda: self.fadeout(max(alpha-ToolTip.FADE_INC, 0)))
#main.py ~ EXAMPLE USAGE OOP
import tkinter as tk
from widgets import ToolTip
class Root(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
#instantiate ToolTip
tt = ToolTip(self)
#create first button and bind a tooltip to it
btn = tk.Button(self, text='hover')
btn.grid(column=0, row=0)
tt.bind(btn, 'first button is hovered')
#create second button and bind a tooltip to it
btn2 = tk.Button(self, text='hover2')
btn2.grid(column=1, row=0)
tt.bind(btn2, 'second button is hovered')
if __name__ == "__main__":
root = Root()
root.title("ToolTip Example")
root.mainloop()
#main.py ~ EXAMPLE USAGE PROCEDURAL
import tkinter as tk
from widgets import ToolTip
if __name__ == "__main__":
root = tk.Tk()
root.title("ToolTip Example")
#instantiate ToolTip
tt = ToolTip(root)
#create first button and bind a tooltip to it
btn = tk.Button(root, text='hover')
btn.grid(column=0, row=0)
tt.bind(btn, 'first button is hovered')
#create second button and bind a tooltip to it
btn2 = tk.Button(root, text='hover2')
btn2.grid(column=1, row=0)
tt.bind(btn2, 'second button is hovered')
root.mainloop()
Here is a small snippet using Pmw (python mega widgets) for the tool tips.
Firstly start by installing it:
pip install Pmw
Then here is a snippet to understand what Pmw can do:
from tkinter import *
import Pmw
root = Tk()
Pmw.initialise(root) #initializing it in the root window
l = Label(root,text='Random Text')
l.pack()
b = Button(root,text='Hover me')
b.pack()
tooltip_1 = Pmw.Balloon(root) #Calling the tooltip
tooltip_1.bind(b,'This is the hover Text\nHope you get an idea of whats going on here.') #binding it and assigning a text to it
root.mainloop()
Hope this gives you a better idea. Keep in mind that Pmw could create a mess while converting the py to an exe later(if you have any intentions to). There is a way around in tho.
Cheers
I'm new to Python and Tkinter and was trying to create an interface to search & plot data. I created a very simple toplevel window to get the values from a combobox that would be selected from users. However, I find the script would only print the first item in the list if comboxlist2.current(0) was set or it would print nothing, no matter which one is selected in the box. I created a sample script to test this. If I click on the "search & create", then the return values can change according to the user selection in comboxlist1, while it would all return "1" no matter what the user selected in comboxlist2. So may I ask where is the issue and how to solve?
Thanks in advance for the potential suggestions or solutions!
import tkinter as tk
from tkinter import ttk
from tkinter import *
def root_print():
reg_in = comboxlist1.get()
print(reg_in) #print the value selected
def on_click():
tl = Toplevel()
comvalue2 = tk.StringVar()
comboxlist2 = ttk.Combobox(tl,textvariable=comvalue2)
comboxlist2["values"] = ("1","2","3")
comboxlist2.grid()
comboxlist2.current(0) #select the first one as default
#mm = comboxlist2.get()
#print(mm) #print directly
go(comboxlist2,tl)
tl.wait_window()
return
def go(comboxlist2,tl):
mm = comboxlist2.get()
Button(tl,text='go', command=lambda:test(mm)).grid()
def test(mm):
print(mm) #do the same thing for the comboxlist2
root = Tk()
root.title('search') #create an interface
root.geometry('+400+200') #size and position
Label(text='region ').grid(row=2,column=0)
comvalue1 = tk.StringVar()
comboxlist1=ttk.Combobox(root,textvariable=comvalue1)
comboxlist1["values"]=("all","africa","asia","australia","canada","europe","mexico","southamerica","usa")
comboxlist1.grid(row=2,column=1)
comboxlist1.current(0)
Button(text='search & create', command=root_print).grid(row=0,column=4)
Button(text='click', command=on_click).grid(row=1, column=4)
loop = mainloop()#go!
Here is the working code, which should take care of your needs. I have removed the imports and some code snippets which are not useful.
import tkinter as tk
from tkinter import ttk
def root_print():
reg_in = comboxlist1.get()
print(reg_in)
def on_click():
tl = tk.Toplevel()
comvalue2 = tk.StringVar()
comboxlist2 = ttk.Combobox(tl,textvariable=comvalue2)
comboxlist2["values"] = ("1","2","3")
comboxlist2.grid()
comboxlist2.current(0) #select the first one as default
tk.Button(tl,text='go', command=lambda: test(comboxlist2.get())).grid()
tl.wait_window()
def test(mm):
print(mm)
root = tk.Tk()
root.title('search') #create an interface
root.geometry('+400+200') #size and position
tk.Label(text='region ').grid(row=2,column=0)
comvalue1 = tk.StringVar()
comboxlist1=ttk.Combobox(root,textvariable=comvalue1)
comboxlist1["values"]=("all","africa","asia","australia","canada","europe","mexico","southamerica","usa")
comboxlist1.grid(row=2,column=1)
comboxlist1.current(0)
tk.Button(text='search & create', command=root_print).grid(row=0,column=4)
tk.Button(text='click', command=on_click).grid(row=1, column=4)
root.mainloop()
I'm trying to have my Tk window perform a function when a button is pressed, and they automatically close itself. I assume I need some sort of destroy() function inside of the action function, but I don't know how to word it.
Here is what I am trying to do
import pandas as pd
from tkinter import *
import numpy as np
from functools import partial
fake data
test = pd.DataFrame(columns = ["id", 'sent', "O1", "O2", "O3", "O4"])
results = []
for i in range(5):
test.loc[i,:] = [i,"this is test "+ str(i), .2, .5, .1, .1]
levels = [["Baby"], ["Dinos"], ["bad"], ["Spoons"]]
###
This is the action I want it to take. It needs to record what was pressed, then delete the window afterwards. I think this is where my destroy() function needs to go, but I'm not sure how to word it.
def Add_results(option):
results.append(option)
My window maker
def Window_maker(sent, choices):
root = Tk()
topFrame = Frame(root)
topFrame.pack()
botFrame = Frame(root)
botFrame.pack()
label = Label(topFrame, text =sent)
label.pack()
indi= 0
button1 = Button(botFrame, text = choices[0], command = lambda: Add_results(option = choices[0]))
button1.pack()
button2 = Button(botFrame, text = choices[1], command = lambda: Add_results(option = choices[1]))
button2.pack()
root.mainloop()
return(results)
The implementation
for i in range(test.shape[0]):
index = get_params(test.iloc[i, 2:])
choices = [levels[x] for x in index.values]
pred = Window_maker(test.iloc[i,1], choices)
I found a fix.
I change Add_results to:
def Add_results(option):
results.append(option)
root.quit()
And it worked!
I am fairly new to python and am currently working on a school project, my aim is to create a search bar that can be used to search a data file, however I am struggling to get the search bar to work correctly. I am using the tkinter entry widget.
When I call .get(), the string in the entry widget is not printed. Here is my code...
from tkinter import *
def searchButton():
text = searched.get()
print (text)
def drawStatWindow():
global searched
statWindow = Tk()
statWindow.title("View Statistics")
statWindow.config(bg = "grey")
statWindow.geometry('800x900')
searched = StringVar()
searchBox = Entry(statWindow, textvariable = searched)
searchBox.place(x= 450, y=50, width = 200, height = 24)
enterButton = tkinter.Button(statWindow, text ="Enter", command =searchButton)
enterButton.config(height = 1, width = 4)
enterButton.place(x=652, y=50)
drawStatWindow()
When I type a string into the entry widget and press the enter button, nothing happens.
Like I say I am not very experienced and this is my first project, but after reading about the tkinter entry widgets I can't understand why this won't work.
I am using python V3.4.0
Thanks.
Your code lacks a call to mainloop(). You could try adding it to the end of the drawStatWindow() function:
statWindow.mainloop()
You might want to restructure your code into a class. This allows you to avoid using global variables and generally provides better organisation for your application:
from tkinter import *
class App:
def __init__(self, statWindow):
statWindow.title("View Statistics")
statWindow.config(bg = "grey")
statWindow.geometry('800x900')
self.searched = StringVar()
searchBox = Entry(statWindow, textvariable=self.searched)
searchBox.place(x= 450, y=50, width = 200, height = 24)
enterButton = Button(statWindow, text ="Enter", command=self.searchButton)
enterButton.config(height = 1, width = 4)
enterButton.place(x=652, y=50)
def searchButton(self):
text = self.searched.get()
print(text)
root = Tk()
app = App(root)
root.mainloop()
You have to add mainloop() because tkinter needs it to run.
If you run code in IDLE which use tkinter then IDLE runs own mainloop() and code can work but normally you have to add mainloop() at the end.
And you have to remove tkinter in tkinter.Button.
from tkinter import *
def searchButton():
text = searched.get()
print(text)
def drawStatWindow():
global searched
statWindow = Tk()
statWindow.title("View Statistics")
statWindow.config(bg="grey")
statWindow.geometry('800x900')
searched = StringVar()
searchBox = Entry(statWindow, textvariable=searched)
searchBox.place(x= 450, y=50, width=200, height=24)
# remove `tkinter` in `tkinter.Button`
enterButton = Button(statWindow, text="Enter", command=searchButton)
enterButton.config(height=1, width=4)
enterButton.place(x=652, y=50)
# add `mainloop()`
statWindow.mainloop()
drawStatWindow()
No need to use textvariable, you should use this:
searchBox = Entry(statWindow)
searchBox.focus_set()
searchBox.place(x= 450, y=50, width = 200, height = 24)
then you will be able to use searchBox.get(), that will be a string.