CODEWITHSUNDEEP
pythonfor-looptkinter
18166
18166

Reputation: 111

Creating labels and entries in a for loop

I'm trying to make a for loop that makes labels and entries, using a for loop. Here's the code:

r = 1   #r == row
c = 0   #c == column
n = 1   #n == number
a = 2   #a == checking what iteration
for count in y:                                                                                 #Iterates through y, defined earlier
    if a % 2 == 0:                                                                                   #Checks if a is even
        Label(edit_recipe_window, text="Ingredient " + str(n)).grid(row=r, column=c)
        c += 1
        entry_box= Entry(edit_recipe_window)
        entry_box.grid(row=r, column=c)
        entry_box.insert(0, count)
        c = 0
        a += 1
    else:
        Label(edit_recipe_window, text="Quantity and Unit " + str(n)).grid(row=r, column=c)
        c += 1
        quantity_box = Entry(edit_recipe_window)
        quantity_box.grid(row=r, column=c)
        quantity_box.insert(0, count)
        c = 0
        r += 1
        a += 1
    n += 1

This produces a label of quantity + unit 2, which is not the desired out come.

Upvotes: 0

Views: 6710

Answers (1)

Lafexlos
Lafexlos

Reputation: 7735

If you use print for debugging, you will see you are putting your widgets on top of eachother on each if-else pair.

from tkinter import *

edit_recipe_window = Tk()
if 1:
    r = 1   #r == row
    c = 0   #c == column
    n = 1   #n == number
    a = 2   #a == checking what iteration
    y = ["count1","count2","count3","count4","count5"]
    for count in y:
        if a%2 == 0:
            print ("inside if, label values", r, c)
            Label(edit_recipe_window, text="Ingredient " + str(n)).grid(row=r, column=c)
            c += 1
            print("inside if, entry values",r,c)
            entry_box= Entry(edit_recipe_window)
            entry_box.grid(row=r, column=c)
            entry_box.insert(0, count)
            c = 0
            a += 1

        else:
            print ("inside else, label values", r, c)
            Label(edit_recipe_window, text="Quantity and Unit " + str(n)).grid(row=r, column=c)
            c += 1
            print ("inside else, entry values", r, c)
            quantity_box = Entry(edit_recipe_window)
            quantity_box.grid(row=r, column=c)
            quantity_box.insert(0, count)
            c = 0
            r += 1
            a += 1
        n += 1

which will output this for 5-valued y

inside if, label values 1 0  
inside if, entry values 1 1  
inside else, label values 1 0  
inside else, entry values 1 1  
inside if, label values 2 0  
inside if, entry values 2 1  
inside else, label values 2 0  
inside else, entry values 2 1  
inside if, label values 3 0  
inside if, entry values 3 1

As you can see, first it puts Label and Entry in if, then they got overwritten by Label and Entry in else.

You might want to use r += 1 at the end of your if to get rid of overwriting your widgets.

Upvotes: 2

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