Python Tkinter Entry storing variables for later

Question

i am pretty new to Tkinter, but how can i get what i entered for all of the Entry commands to save as a variable for later? Here is my code that the Entry exists. This program is designed to track progress, and work with integers, not floating points. Thanks

It then uses the variables stored for later use for other components, of which works.

  name = Tk()
  name.wm_title("Name")

  Label(name, text="                       First").grid(row=0, column=0)
  Label(name, text="                        Last").grid(row=0, column=2)
  Label(name, text="             Starting height").grid(row=1, column=0)
  Label(name, text="                  Now height").grid(row=1, column=2)
  Label(name, text="                Starting Age").grid(row=2, column=0)
  Label(name, text="                     Now Age").grid(row=2, column=2)
  Label(name, text="        Starting Bench Press").grid(row=3, column=0)
  Label(name, text="   Personal best Bench press").grid(row=3, column=2)
  Label(name, text="     Starting Weighted Squat").grid(row=4, column=0)
  Label(name, text="Personal best weighted squat").grid(row=4, column=2)
  Label(name, text="           Starting deadlift").grid(row=5, column=0)
  Label(name, text="      Personal best deadlift").grid(row=5, column=2)
  Label(name, text="     Starting shoulder press").grid(row=6, column=0)
  Label(name, text="Personal best shoulder press").grid(row=6, column=2)
  Label(name, text="          Starting leg press").grid(row=7, column=0)
  Label(name, text="     Personal best leg press").grid(row=7, column=2)
  Label(name, text="       Starting lat pulldown").grid(row=8, column=0)
  Label(name, text="  Personal best lat pulldown").grid(row=8, column=2)


  first                    = Entry(name)
  last                     = Entry(name)
  starting_height          = Entry(name)
  Now_height               = Entry(name)
  Start_age                = Entry(name)
  Now_age                  = Entry(name)
  Start_Bench_Press        = Entry(name)
  Heaviest_Bench_Press     = Entry(name)
  Start_Weight_Squat       = Entry(name)
  Heaviest_Weight_Squat    = Entry(name)
  Start_deadlift           = Entry(name)
  Heaviest_deadlift        = Entry(name)
  Start_Shoulder_Press     = Entry(name)
  Heaviest_Shoulder_Press  = Entry(name)
  Start_Leg_Press          = Entry(name)
  Heaviest_Leg_Press       = Entry(name)
  Start_Lat_Pulldown       = Entry(name)
  Heaviest_Lat_Pulldown    = Entry(name)

  first.grid                   (row=0, column=1)
  last.grid                    (row=0, column=3)
  Starting_height.grid         (row=1, column=1)
  Now_height.grid              (row=1, column=3)
  Start_age.grid               (row=2, column=1)
  Now_age.grid                 (row=2, column=3)
  Start_Bench_Press.grid       (row=3, column=1)
  Heaviest_Bench_Press.grid    (row=3, column=3)
  Start_Weight_Squat.grid      (row=4, column=1)
  Heaviest_Weight_Squat.grid   (row=4, column=3)
  Start_deadlift.grid          (row=5, column=1)
  Heaviest_deadlift.grid       (row=5, column=3)
  Start_Shoulder_Press.grid    (row=6, column=1)
  Heaviest_Shoulder_Press.grid (row=6, column=3)
  Start_Leg_Press.grid         (row=7, column=1)
  Heaviest_Leg_Press.grid      (row=7, column=3)
  Start_Lat_Pulldown.grid      (row=8, column=1)
  Heaviest_Lat_Pulldown.grid   (row=8, column=3)


  Button(name, text='Quit', command=name.destroy).grid(row=10, column=0, sticky=W, pady=4)

  name.mainloop()

Answer 1

Here is an example of using IntVar to save the value from an Entry widget.

from tkinter import *
from tkinter import messagebox

name = Tk()
name.wm_title("Name")

Label(name, text="sFirst").grid(row=0, column=0)

firstsv = IntVar()
first = Entry(name, textvariable=firstsv)

first.grid(row=0, column=1)

b1 = Button(name, text='Show', command=lambda: messagebox.showinfo("hi", firstsv.get()))
b1.grid(row=1, column=0, sticky=W, pady=4)

name.mainloop()

# use after loop
print('firstsv = %d' % firstsv.get())

This is python 3 code. If you are using python 2 (as many beginners seem to be still be doing), it's left as an exercise to convert the code.