CODEWITHSUNDEEP
pythontkinter
Ryan Gadsdon
Ryan Gadsdon

Reputation: 2378

Return values to tkinter interface

I want to create an excel like interface in python using tkinter which i have created as shown below.

from tkinter import *

window=Tk()

x = [1,2,3,4]

height = 1
width = 4
for i in range(height):  # Rows
    for j in range(width):  # Columns
        b = Entry(window, text="")
        b.grid(row=i, column=j)
window.mainloop()

How could i return the list x to the tkinter interface? preferably 1 number per cell. Is that possible?

expected result to look something like:

Upvotes: 0

Views: 61

Answers (2)

Bryan Oakley
Bryan Oakley

Reputation: 386010

If you are trying to emulate a spreadsheet, you need a way to address the widgets in every row. Once you have that, inserting, deleting, and fetching the data becomes very simple.

The simplest way to do that is to store references to the entry widgets as a list of lists, so that you can reference any cell by its row and column number.

cells = []
for i in range(height):  # Rows
    row = []
    cells.append(row)
    for j in range(width):  # Columns
        b = Entry(window, text="")
        b.grid(row=i, column=j)
        row.append(b)

You can now use cells to reference any widget. For example, the widget for row 0, column 2 would be cells[0][2].

With this basic structure, you can now easily write functions to get or set whole rows or whole regions at a time.

For example, here's a way to create a set_row function:

def set_row(rownum, data):
    row = cells[rownum]
    for entry, value in zip(row, data):
        entry.delete(0, "end")
        entry.insert(0, value)

For example, to set the first (0) row with the contents of x you could do:

set_row(0, x)

Getting data from the spreadsheet is also simple:

def get_data():
    rows = []
    for rownum in range(height):
        row = []
        rows.append(row)
        for columnnum in range(width):
            entry = cells[rownum][columnnum]
            row.append(entry.get())
    return rows

Upvotes: 1

Alderven
Alderven

Reputation: 8270

You can define entry value using insert:

from tkinter import *

window = Tk()

x = [1, 2, 3, 4]

height = 1
for i in range(height):
    for j, val in enumerate(x):
        b = Entry(window)
        b.insert(0, val)
        b.grid(row=i, column=j)
window.mainloop()

Result:

enter image description here

Upvotes: 1

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