The program I just wrote is my playground for finding out how Tkinter works.
My question is how do I display my variable "timelabel" as a Label.
I allready made a label called timerefresher yet it doesnt show up.
I am aware that the DigitalClock class isn't written efficiently. I am new to this ;).
def Clockupdate(time):
timelabel = time
timerefresher = Label(root, textvariable=timelabel)
timerefresher.pack()
#print(timelabel) To test if variable made it this far.
class DigitalClock:
def secondrefesher(self):
newtime = ""
while 1 == 1:
oldtime = datetime.datetime.now()
a = str(oldtime.hour)
b = str(oldtime.minute)
c = str(oldtime.second)
curtime = (a+":"+b+':'+c)
if curtime != newtime:
newtime = curtime
#print("made it here")
Clockupdate(newtime)
else:
time.sleep(0.20)
DC = DigitalClock()
root = Tk()
mainlabel = Label(root, text="Hey this is working!")
Pressme = Button(root, text="Press me!", command=Presstoshowtextandpic,
bg='red', fg='white')
Clock = Button(root, text="Clock?", command=DC.secondrefesher, bg='blue',
fg='white')
Photo = PhotoImage(file="test.png")
ShowPhoto = Label(root, image=Photo)
mainlabel.pack()
Pressme.pack()
Clock.pack()
root.mainloop()
Ok so Here is what I would do with your code to accomplish what you are trying to do.
First lets make sure we have the correct imports.
from tkinter import *
import datetime
import time
I created this doNothing() function as a place holder for any commands I am not currently testing.
def doNothing():
pass
Now the way you had your Clockupdate(time): function would cause the label to be added every time you click the clock button. so this is probably not what you want as it just keeps adding new labels instead of replacing the existing one. Take a look at this function. All I do in this is .config() the text to be the time argument from the function. Note you do not need to redefine the time to timelabel or anything of the sort, just use time as your varable.
def Clockupdate(time):
timerefresher.config(text = time)
I don't know if you wanted to use a class for a specific reason but I think you should just use a function here. Also try to keep your quotes consistent. I know they are interchangeable but its good practice to keep them consistent.
def secondrefesher():
newtime = ""
oldtime = datetime.datetime.now()
a = str(oldtime.hour)
b = str(oldtime.minute)
c = str(oldtime.second)
curtime = (a + ":" + b + ":" + c)
if curtime != newtime:
newtime = curtime
Clockupdate(newtime)
Note I always place commands at the end of any config of a button. It helps when managing code so you can just check the end of each line as you scroll through your code. I also changed the command for Pressme to doNothing so I could test the code. You didn't provide the code for Presstoshowtextandpic and would not be able to test the code with out that part. Remember when asking a question here to use MCVE.
root = Tk()
mainlabel = Label(root, text="Hey this is working!")
Pressme = Button(root, text = "Press me!", bg = "red", fg = "white", command = doNothing)
Clock = Button(root, text = "Clock?", bg = "blue", fg = "white", command = secondrefesher)
Photo = PhotoImage(file = "test.png")
ShowPhoto = Label(root, image = Photo)
Here I created the time label just once and then you can call the update function all you want to change the text to current time.
timerefresher = Label(root, text = "")
timerefresher.pack()
mainlabel.pack()
Pressme.pack()
Clock.pack()
root.mainloop()
Here is what I think the completed code should look like for you.
from tkinter import *
import datetime
import time
def Clockupdate(time):
timerefresher.config(text = time)
def secondrefesher():
newtime = ""
oldtime = datetime.datetime.now()
a = str(oldtime.hour)
b = str(oldtime.minute)
c = str(oldtime.second)
curtime = (a + ":" + b + ":" + c)
if curtime != newtime:
newtime = curtime
Clockupdate(newtime)
root = Tk()
mainlabel = Label(root, text = "Hey this is working!")
Pressme = Button(root, text = "Press me!", bg = "red", fg = "white", command = Presstoshowtextandpic)
Clock = Button(root, text = "Clock?", bg = "blue", fg = "white", command = secondrefesher)
Photo = PhotoImage(file = "test.png")
ShowPhoto = Label(root, image = Photo)
timerefresher = Label(root, text = "")
timerefresher.pack()
mainlabel.pack()
Pressme.pack()
Clock.pack()
root.mainloop()
Edit:
In case you are trying to create a clock that is always active and does not require you to click the button you can use .after().
Take a look at this example.
from tkinter import *
import datetime
import time
root = Tk()
mainlabel = Label(root, text = "Hey this is working!")
Photo = PhotoImage(file = "test.png")
timerefresher = Label(root, text = "")
timerefresher.pack()
status_time = ""
def tick():
global status_time
time2 = time.strftime("%H:%M:%S")
if time2 != status_time:
status_time = time2
timerefresher.config(text = time2)
timerefresher.after(200, tick)
tick()
mainlabel.pack()
root.mainloop()
You should have written an MCVE so that one can test your code, especially that things are missing (such as Presstoshowtextandpic()).
When reading the rest of your code, I think you need to read about variable classes and modify Clockupdate() as follows:
def Clockupdate(time):
timelabel = StringVar() # modified
timelabel.set(time) # added
timerefresher = Label(root, textvariable=timelabel.get()) #modified
timerefresher.pack()
P.S. You should write clock_update() instead of Clockupdate()
Related
import random
import tkinter as tk
frame = tk.Tk()
frame.title("koeweils baldadige encyptor")
frame.geometry('400x200')
printButton = tk.Button(frame,text = "Print", command = lambda: zandkasteel())
printButton.pack()
freek = tk.Text(frame,height = 5, width = 20)
freek.pack()
input_a = freek.get(1.0, "end-1c")
print(input_a)
fruit = 0
fad = input_a[fruit:fruit+1]
print(fad)
schepje = len(input_a.strip("\n"))
print(schepje)
def zandkasteel():
lbl.config(text = "Ingevulde string: "+input_a)
with open("luchtballon.txt", "w") as chocoladeletter:
for i in range(schepje):
n = random.randint()
print(n)
leuk_woord = ord(fad)*n
print(leuk_woord)
chocoladeletter.write(str(leuk_woord))
chocoladeletter.write(str(n))
chocoladeletter.write('\n')
lbl = tk.Label(frame, text = "")
lbl.pack()
frame.mainloop()
I need to get the string that was entered into the text entry field freek. I have tried to assign that string to input_a, but the string doesn't show up.
Right now, input_a doesn't get anything assigned to it and seems to stay blank. I had the same function working before implementing a GUI, so the problem shouldn't lie with the def zandkasteel.
To be honest I really don't know what to try at this point, if you happen to have any insights, please do share and help out this newbie programmer in need.
Here are some simple modifications to your code that shows how to get the string in the Text widget when it's needed — specifically when the zandkasteel() function gets called in response to the user clicking on the Print button.
import random
import tkinter as tk
frame = tk.Tk()
frame.title("koeweils baldadige encyptor")
frame.geometry('400x200')
printButton = tk.Button(frame, text="Print", command=lambda: zandkasteel())
printButton.pack()
freek = tk.Text(frame, height=5, width=20)
freek.pack()
def zandkasteel():
input_a = freek.get(1.0, "end-1c")
print(f'{input_a=}')
fruit = 0
fad = input_a[fruit:fruit+1]
print(f'{fad=}')
schepje = len(input_a.strip("\n"))
print(f'{schepje=}')
lbl.config(text="Ingevulde string: " + input_a)
with open("luchtballon.txt", "w") as chocoladeletter:
for i in range(schepje):
n = random.randint(1, 3)
print(n)
leuk_woord = ord(fad)*n
print(leuk_woord)
chocoladeletter.write(str(leuk_woord))
chocoladeletter.write(str(n))
chocoladeletter.write('\n')
lbl = tk.Label(frame, text="")
lbl.pack()
frame.mainloop()
So, I have been trying to create a simple stopwatch in tkinter in which I created a loop to update text to new time i.e., the next second in timer label as I click button_1. I tried to do this with StringVar() as well as .config method but none of them are updating the text in label. The code is below
from datetime import *
from time import *
init_time = datetime(100, 1, 1, 0, 0, 0)
running = True
def clock():
while running == True:
sleep(1)
global init_time
a = init_time.strftime("%H:%M:%S")
mtime.set(a)
init_time = init_time + timedelta(seconds=1)
def stop():
global running
running = False
main = Tk()
main.geometry("500x200")
mtime = StringVar()
timer = Label(main, textvariable = mtime, width=30, bg="black", fg="white", font=(25))
timer.place(x=90, y=20)
button_1 = Button(main, text = "Start", command = clock()).place(x=170, y=120)
button = Button(main, text = "Stop", command = stop).place(x=250, y=120)
main.mainloop()
I even tried to convert the init_time to a string because I thought maybe the updates of text work only for strings. The initial GUI window shows but as I click button_1 it doesn't work.
You did common mistake, look at these two lines
button_1 = Button(main, text = "Start", command = clock()).place(x=170, y=120)
button = Button(main, text = "Stop", command = stop).place(x=250, y=120)
Note that you have clock() and stop. First is function invocation, second is function. You should provide function as command. Replace clock() using clock.
Also if you are interested in executing function every n miliseconds, please take look at .after, consider following simple timer
import tkinter as tk
elapsed = 0
def update_timer():
global elapsed
elapsed += 1
timer['text'] = str(elapsed)
root.after(1000, update_timer) # 1000 ms = 1 second
root = tk.Tk()
timer = tk.Label(root, text="0")
btn = tk.Button(root, text="Go", command=update_timer)
timer.pack()
btn.pack()
root.mainloop()
I want to get a variable from a function to use this variable in another function.
Simple example:
from tkinter import *
def test():
intro = "I am "
name = "Phil"
text = intro + name
def printresult():
print(text)
root = Tk()
root.title("Test")
testbutton = Button(root, text="Test", command = test)
printbutton = Button(root, text="print Test", command = printresult)
testbutton.grid(row = 1, column = 0)
printbutton.grid(row = 1, column = 1)
mainloop()
If I press the testbutton and afterwards the printbutton, then I get the error "name 'text' is not defined".
So how am I able to get the text variable from the def test() to use it in the def printresult()?
You need to save the value somewhere well known:
from tkinter import *
def test():
intro = "I am "
name = "Phil"
text = intro + name
test.text = text # save the variable on the function itself
def printresult():
print(test.text)
root = Tk()
root.title("Test")
testbutton = Button(root, text="Test", command = test)
printbutton = Button(root, text="print Test", command = printresult)
testbutton.grid(row = 1, column = 0)
printbutton.grid(row = 1, column = 1)
mainloop()
Since you are using tkinter, I'd use a StringVar to store the result. Using a string var makes it easy for other tkinter widgets to use the value.
from tkinter import *
def test():
intro = "I am "
name = "Phil"
text.set(intro + name)
def printresult():
print(text.get())
root = Tk()
root.title("Test")
text = StringVar()
testbutton = Button(root, text="Test", command = test)
printbutton = Button(root, text="print Test", command = printresult)
testbutton.grid(row = 1, column = 0)
printbutton.grid(row = 1, column = 1)
mainloop()
I am trying to add a reset button but I can't seem to get it to work. I created a main in order to refer back to it when the button is pressed but no luck. Any ideas?
import sys
from tkinter import *
import math
def main():
def closeWin():
myGui.destroy() #Close Window Function
def kiloFunc():
myText = kiloMent.get() #Kilometers to Miles Fuction
convert = 0.62
miles = myText * convert
finalKilo = Label(text = miles,fg='red',justify='center').place(x=200,y=80)
def mileFunc():
myText2 = mileMent.get() #Miles to Kilometers Function
convertTwo = myText2 // 0.62
finalMile = Label(text = convertTwo, fg = 'red',justify='center').place(x=200,y=170)
myGui = Tk()
kiloMent = IntVar()
mileMent = IntVar()
myGui.title("Distance Converter")
myGui.geometry("450x200+500+200")
myLabel = Label(text="Welcome! Please enter your value then choose your option:",fg="blue",justify='center')
myLabel.pack()
kiloEntry = Entry(myGui, textvariable = kiloMent,justify='center').pack()
kilo2milesButton = Button(text = "Kilometers to Miles!", command = kiloFunc).pack()
mileEntry = Entry(myGui, textvariable = mileMent,justify='center').place(x=130,y=105)
miles2kiloButton = Button(text = "Miles to Kilometers!", command = mileFunc).place(x=150,y=135)
reset = Button(text = "Reset Values!", command = main).place(x=10,y=165)
quit = Button(text="Quit", command = closeWin).place(x=385,y=165)
myGui.mainloop()
main()
By calling main() again, you are simply creating another instance of the GUI. What you should do instead is (if I understand correctly), reset the values of the currently existing GUI. You can use the set() method of the GUI objects.
Does
def reset_values():
kiloMent.set(0)
mileMent.set(0)
reset = Button(text="Reset Values!", command=reset_values).place(x=10, y=165)
do the trick?
Looking at your code more thoroughly, however, there are some other problems there, as well. To start with, I would suggest not creating a Label everytime the user tries to convert a value.
This code should work:
from tkinter import *
def main():
def closeWin():
myGui.destroy() # Close Window Function
def kiloFunc():
finalKilo.set(kiloMent.get() * 0.62) # Kilometers to Miles Fuction
def mileFunc():
finalMile.set(mileMent.get() // 0.62) # Miles to Kilometers Function
def clearFunc():
kiloMent.set("0")
mileMent.set("0")
finalKilo.set("")
finalMile.set("")
myGui = Tk()
kiloMent = IntVar()
mileMent = IntVar()
finalKilo = StringVar()
finalMile = StringVar()
myGui.title("Distance Converter")
myGui.geometry("450x200+500+200")
myLabel = Label(text="Welcome! Please enter your value then choose your option:", fg="blue", justify='center')
myLabel.pack()
kiloEntry = Entry(myGui, textvariable=kiloMent, justify='center')
kiloEntry.pack()
kilo2milesButton = Button(text="Kilometers to Miles!", command=kiloFunc)
kilo2milesButton.pack()
mileEntry = Entry(myGui, textvariable=mileMent, justify='center')
mileEntry.place(x=130, y=105)
miles2kiloButton = Button(text="Miles to Kilometers!", command=mileFunc)
miles2kiloButton.place(x=150, y=135)
kiloLabel = Label(textvariable=finalKilo, fg='red', justify='center')
kiloLabel.place(x=200, y=80)
mileLabel = Label(textvariable=finalMile, fg='red', justify='center')
mileLabel.place(x=200, y=170)
reset = Button(text="Reset Values!", command=clearFunc)
reset.place(x=10, y=165)
quit = Button(text="Quit", command=closeWin)
quit.place(x=385, y=165)
myGui.mainloop()
main()
A few notes about your original code besides the ones that Chuck mentioned:
The math and sys imports were unused.
You were setting variables equal to widget.pack() and widget.place(), which are functions that return None.
I'm having a major issue with my code below. So here's what I'm trying to do.
The user enters certain inputs into the entry fields and the program calculates and displays a corresponding image (loaded in the frame champFrame) and it's description (in spellFrame).
What I want is to replace this image and text every time I click on the Calculate! button so that it shows me a new image and new description based on my new inputs.
However, in its current state, when I enter new input and click the Calculate! button, it just adds the new image below the old one and the old one is still there.
How do I change my code around so that I can replace these old values?
I have heard of using the pack_forget() method but it only hides the previous image, does not remove it so I can replace it with a new one.
from Tkinter import *
from PIL import ImageTk
from Calculation import getHighestScore
from ImageHandler import *
import json
import urllib2
top = Tk()
top.title("LOLSpellEfficiency")
top.geometry("600x600")
def loadInputFields(frame):
AP_Label = Label(frame, text="AP")
AD_Label = Label(frame, text="AD")
CDR_Label = Label(frame, text="CDR")
AP_Label.grid(row=0, column=0)
AD_Label.grid(row=1, column=0)
CDR_Label.grid(row=2, column=0)
AP_Entry = Entry(frame)
AD_Entry = Entry(frame)
CDR_Entry = Entry(frame)
AP_Entry.grid(row=0, column=1)
AP_Entry.insert(0, "0")
AD_Entry.grid(row=1, column=1)
AD_Entry.insert(0, "0")
CDR_Entry.grid(row=2, column=1)
CDR_Entry.insert(0, "0")
return [AP_Entry, AD_Entry, CDR_Entry]
def loadButton(frame, entries):
Enter_Button = Button(frame, text="Calculate!", command = lambda: executeProgram(entries))
Enter_Button.pack(side=TOP)
def executeProgram(entries):
AP = float(entries[0].get())
AD = float(entries[1].get())
CDR = float(entries[2].get())
data = getChampionData()
result = getHighestScore(data, AP, AD, CDR)
champPhoto = ImageTk.PhotoImage(getChampionImage(result[0]))
champLabel = Label(championFrame, image=champPhoto)
champLabel.image = champPhoto
champLabel.pack(side = TOP)
champName = Label(championFrame, text = "Champion: " + result[0])
champName.pack(side = BOTTOM)
spellPhoto = ImageTk.PhotoImage(getSpellImage(result[2]))
spellLabel = Label(spellFrame, image=spellPhoto)
spellLabel.image = spellPhoto
spellText = Text(spellFrame, wrap=WORD)
spellText.insert(INSERT, "Spell: " + result[1] + "\n")
spellText.insert(INSERT, "Spell description: " + result[3] + "\n")
spellLabel.pack(side=TOP)
spellText.pack(side=BOTTOM)
championFrame.pack()
spellFrame.pack()
def getChampionData():
URL = "https://global.api.pvp.net/api/lol/static-data/na/v1.2/champion?champData=all&api_key=8e8904b4-c112-4b0f-bd1e-641649d9e569"
return json.load(urllib2.urlopen(URL))
inputFrame = Frame(top)
inputFrame.pack()
buttonFrame = Frame(top)
buttonFrame.pack()
championFrame = Frame(top)
spellFrame = Frame(top)
championFrame.pack()
spellFrame.pack()
entries = loadInputFields(inputFrame)
loadButton(buttonFrame, entries)
top.mainloop()
Do not create widgets inside of executeProgram. Instead, create them in your main application, and simply change the widgets inside executeProgram.
All widgets have a configure method which lets you change all of the attributes of that widget. For example, to change the image on a label you would do something like this:
champPhoto = ImageTk.PhotoImage(getChampionImage(result[0]))
champLabel.configure(image=champPhoto)
champLabel.image = champPhoto