CODEWITHSUNDEEP
pythonloopstkintersleep
Alexandre ALONSO
Alexandre ALONSO

Reputation: 3

(Python 3.7) How can i print messages characters with a delay between them using tkinter?

First of all i'm new to python and coding

I want to do something pretty simple with tkinter, when you hit a button it show you a text, like in old games, letter by letter with a little delay between each characters

I can't find a way to make the delay between characters, i've tried time.sleep with a loop but the text is shown at the end of the loop

I've seen the after function but i don't know how to use it neither i understand how it works

Should i use sleep or after ? And how should i use them to make it work ?

Btw if you have any tips or advices about the code tell me

    #MainFrame
root.title("Project")
root.geometry('400x400')
root.configure(bg="plum1")
    #Frame
BlackBorder=Frame(root,width=400,height=300,bg='Black')
BlackBorder.place(x=0,y=80)
TxtFrame=Frame(BlackBorder,width=370,height=270,bg='lavender')
TxtFrame.place(x=15,y=15)
    #Display
Cunter=Text(root,width=24,height=1,bg='lavender',font='Fixedsys')
Cunter.place(x=100,y=22)
Cunter.insert(END, str(len(LoList))+" Résultats Différents")


#defTxt
def LoMsg(self):
    self=Text(TxtFrame,wrap='word',borderwidth=0,width=35,height=10,bg='lavender',font='Fixedsys')
    self.place(x=50,y=100)
    LoTxt=str(LovList[randrange(len(LovList))])
    LoNum=0
    while LoNum!=len(LoTxt):
        self.insert(END,LoTxt[LoNum])
        sleep(0.1)
        LoNum+=1

    #Button
buttonMain=Button(root,width=9,height=3,bg='thistle2',text="Try me",font='Fixedsys')
buttonMain.place(x=5,y=5)
#ButtonEvent
buttonMain.bind('<1>', LoMsg)

Upvotes: 0

Views: 185

Answers (2)

Owen
Owen

Reputation: 448

Welcome to Python and coding! There's a few things I want to address before I answer your question:

  1. It is helpful if you can provide a minimal, reproducible example when asking your question. I can't really see what the issue in your code is because there's so much happening and I can't run it on my computer because there are parts missing. For example, LoList is undefined and there are no import statements.)

  2. PEP8 has a huge list of suggestions on how to style your code - too much to read all at once. But I'd like to draw your attention to Function and Variable names, which suggests that variables and functions use all lowercase, with words separated by underscores. Usually Class Names start with a capital letter. So a lot of your variables and functions look like classes to me.

To answer your question, I think that using time.sleep() would work. Here's a simple example that runs in a console that might help you figure out how to use it:

import time
text = "I've been awaiting your arrival..."
for char in text:
    # end='' will prevent each letter from getting its own line on the console
    # flush=True will make sure that the character is printed right away in the console
    print(char, end='', flush=True) 
    time.sleep(0.1)

Upvotes: 0

FrainBr33z3
FrainBr33z3

Reputation: 1105

The following is an example to highlight the usage of the after(ms, callback) method to get your desired result (adjust the ms in the after method accordingly):

import tkinter as Tk

def insert():
    global LoNum
    text.insert(Tk.END, word[LoNum])
    LoNum += 1
    if LoNum != len(word):
        root.after(300, insert)
    else:
        return

root = Tk.Tk()
root.geometry('600x200')

LoNum = 0
word = [x for x in 'abcdefg'] # get the word to a list format
text = Tk.Text(root, wrap='word', borderwidth=0, width=35, height=10, bg='lavender')
text.pack()

Tk.Button(root, text='Try Me', width=9, height=3, bg='thistle2', command=insert).pack()

root.mainloop()

Upvotes: 1

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