Etikettenwerte ändern, wenn ein Eingabewert geändert wird

Question

Mein Problem im Moment ist, ich versuche, eine Bezeichnung (Label 16) auf den ersten Wert von entry_values ​​[0] zu ändern, die nicht funktioniert Ich habe versucht, es als übergeben eine Variable und viele andere Dinge, nach etwa einer Stunde Forschung konnte ich keine Lösung finden. Ich denke, das Hauptproblem ist, dass es das Label setzt, bevor der Code mit dem Eintrag ausgeführt wird, so dass es sich nicht ändert. Wenn ich es auf eine Textvariable setze, erzeugt es eine leere Zeichenkette (denke ich), aber wenn ich nur Text verwende, wird eine 0 gesetzt, wo ich meine Nummer erwarte.

def sub_menu(root): 
    global subpage 
    subpage = Frame(root) 
    button5 = Button(subpage, text="Save Generation Data", 
       command = lambda: save_entries()) 
    button5.grid(row = 1, column = 6, sticky = E) 

    button6 = Button(subpage, text="Return To Main Page", 
       command = lambda: switch_page("main")) 

    button6.grid(row = 0, column = 6, sticky = W) 

    juveniles_label0 = Label(subpage,text="Juveniles") 
    adults_label1 = Label(subpage,text="Adults") 
    seniles_label2 = Label(subpage,text="Seniles") 
    population_label3 = Label(subpage,text="Population (Thousands)") 
    survival_rate_label4 = Label(subpage,text="Survival Rate (Between 0 and 1)") 
    birth_rate_label5 = Label(subpage,text="Birth Rate") 
    number_of_gens_label6 = Label(subpage,text="Number of Generations") 
    disease_trigger_label7 = Label(subpage,text="Disease Trigger Point") 

    global entry0 
    entry0 = Entry(subpage) 
    global entry1 
    entry1 = Entry(subpage) 
    global entry2 
    entry2 = Entry(subpage) 
    global entry3 
    entry3 = Entry(subpage) 
    global entry4 
    entry4 = Entry(subpage) 
    global entry5 
    entry5 = Entry(subpage) 
    global entry6 
    entry6 = Entry(subpage) 
    global entry7 
    entry7 = Entry(subpage) 
    global entry8 
    entry8 = Entry(subpage) 


    juveniles_label0.grid(row = 0, column = 1) 
    adults_label1.grid(row = 0, column = 2) 
    seniles_label2.grid(row = 0, column = 3) 
    population_label3.grid(row = 1, column = 0) 
    survival_rate_label4.grid(row = 2, column = 0) 
    birth_rate_label5.grid(row = 3, column = 0) 
    number_of_gens_label6.grid(row = 3, column = 2) 
    disease_trigger_label7.grid(row = 4, column = 0) 

    entry0.grid(row = 1, column = 1) 
    entry1.grid(row = 1, column = 2) 
    entry2.grid(row = 1, column = 3) 
    entry3.grid(row = 2, column = 1) 
    entry4.grid(row = 2, column = 2) 
    entry5.grid(row = 2, column = 3) 
    entry6.grid(row = 3, column = 1) 
    entry7.grid(row = 3, column = 3) 
    entry8.grid(row = 4, column = 1) 



    return subpage 

def save_entries(): #entry recieve point 
    save_page = Frame(root) 

    """ if e0 < 0: 
      make a check to check if value is < 0 dont accept and if a value is inputed or not using if type(string_name) == str """ 
    e0 = entry0.get() 
    if e0 >= 0: 
     entry_values[0] = (e0) 
    e1 = entry1.get() 
    if e0 >= 0: 
     entry_values[1] = (e1) 
    e2 = entry2.get() 
    if e0 >= 0: 
     entry_values[2] = (e2) 
    e3 = entry3.get() 
    if e0 >= 0: 
     entry_values[3] = (e3) 
    e4 = entry4.get() 
    if e0 >= 0: 
     entry_values[4] = (e4) 
    e5 = entry5.get() 
    if e0 >= 0: 
     entry_values[5] = (e5) 
    e6 = entry6.get() 
    if e0 >= 0: 
     entry_values[6] = (e6) 
    e7 = entry7.get() 
    if e0 >= 0: 
     entry_values[7] = (e7) 
    e8 = entry8.get() 
    if e0 >= 0: 
     entry_values[8] = (e8) 

    print entry_values 


    return save_page 


def display_values(root): 
    sub2 = Frame(root) 
    global entry_values 


    label8 = Label(sub2, text = "Juveniles") 
    label9 = Label(sub2, text = "Adults") 
    label10 = Label(sub2, text = "Seniles") 

    label11 = Label(sub2, text = "Population(Thousands)") 
    label12 = Label(sub2, text = "Survival Rate(Between 1 and 0)") 
    label13 = Label(sub2, text = "Birth Rate") 
    label14 = Label(sub2, text = "Number of Generations") 
    label15 = Label(sub2, text = "Disase Trigger Point") 

    label16 = Label(sub2, text = entry_values[0]) 
    label17 = Label(sub2, textvariable = entry_values[1]) 
    label18 = Label(sub2, textvariable = "") 
    label19 = Label(sub2, textvariable = "") 
    label20 = Label(sub2, textvariable = "") 
    label21 = Label(sub2, textvariable = "") 
    label22 = Label(sub2, textvariable = "") 
    label23 = Label(sub2, textvariable = "") 
    label24 = Label(sub2, textvariable = "") 


    button7 = Button(sub2, text="Return To Main Page", 
       command = lambda: switch_page("main")) 


    label8.grid(row = 0, column = 1) 
    label9.grid(row = 0, column = 2) 
    label10.grid(row = 0, column = 3) 
    label11.grid(row = 1, column = 0) 
    label12.grid(row = 2, column = 0) 
    label13.grid(row = 3, column = 0) 
    label14.grid(row = 3, column = 3) 
    label15.grid(row = 4, column = 0) 
    label16.grid(row = 1, column = 1) 
    label17.grid(row = 1, column = 2) 
    label18.grid(row = 1, column = 3) 
    label19.grid(row = 2, column = 1) 
    label20.grid(row = 2, column = 2) 
    label21.grid(row = 2, column = 3) 
    label22.grid(row = 3, column = 1) 
    label23.grid(row = 3, column = 3) 
    label24.grid(row = 4, column = 1) 

    button7.grid(row = 0, column = 0) 

    return sub2 

Answer 1

Um den Text eines Etiketts zu ändern, die Sie tun können:

label["text"] = textVar 

oder

label.config(text=textVar) 

Also in Ihrem obigen Code, wenn der Eintrag ändert, konfigurieren Sie das Etikett mit eine der oben genannten Optionen.