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Create a male/female variable for an equation

I’m developing a BMI and fat percentage calculator for a school project. I took a model with a ready-made GUI and made the necessary adjustments, but I’m stuck in the equation to calculate the fat percentage.
This is my full code:
from tkinter import *
from tkinter import messagebox
def fazer_reset():
idade_tf.delete(0, 'end')
altura_tf.delete(0, 'end')
peso_tf.delete(0, 'end')
def calcular_imc():
kg = int(peso_tf.get())
m = int(altura_tf.get()) / 100
imc = kg / (m * m)
imc = round(imc, 1)
indice_de_imc(imc)
def indice_de_imc(imc):
if imc < 18.5:
messagebox.showinfo('IMC', f'IMC = {imc} está Abaixo do peso')
elif (imc > 18.5) and (imc < 24.9):
messagebox.showinfo('IMC', f'IMC = {imc} está Normal')
elif (imc > 24.9) and (imc < 29.9):
messagebox.showinfo('IMC', f'IMC = {imc} está Acima do peso')
elif (imc > 29.9):
messagebox.showinfo('IMC', f'IMC = {imc} está Obeso')
else:
messagebox.showerror('IMC', 'algo deu errado!')
def calcular_gordura():
idade = int(idade_tf.get())
kg = int(peso_tf.get())
m = int(altura_tf.get()) / 100
imc = kg / (m * m)
imc = round(imc, 1)
gordura = (1.2*imc)+(0.23*idade)-(10.8*sexo)-5.4
gordura = round(gordura, 1)
percentual_de_gordura(gordura)
def percentual_de_gordura(gordura):
messagebox.showinfo('Percentual de Gordura', f'O percentual de gordura é de {gordura} %')
ws = Tk()
ws.title('Calculadora de IMC, Percentual de Gordura e Massa Corporal')
ws.geometry('400x300')
ws.config(bg='#686e70')
var = IntVar()
frame = Frame(
ws,
padx=10,
pady=10
)
frame.pack(expand=True)
idade_lb = Label(
frame,
text="Idade"
)
idade_lb.grid(row=1, column=1)
idade_tf = Entry(
frame,
)
idade_tf.grid(row=1, column=2, pady=5)
sexo_lb = Label(
frame,
text='Sexo'
)
sexo_lb.grid(row=2, column=1)
frame2 = Frame(
frame
)
frame2.grid(row=2, column=2, pady=5)
masculino_rb = Radiobutton(
frame2,
text='Masculino',
variable=var,
value=1
)
masculino_rb.pack(side=LEFT)
feminino_rb = Radiobutton(
frame2,
text='Feminino',
variable=var,
value=0
)
feminino_rb.pack(side=RIGHT)
altura_lb = Label(
frame,
text="Altura (cm) "
)
altura_lb.grid(row=3, column=1)
peso_lb = Label(
frame,
text="Peso (kg) ",
)
peso_lb.grid(row=4, column=1)
altura_tf = Entry(
frame,
)
altura_tf.grid(row=3, column=2, pady=5)
peso_tf = Entry(
frame,
)
peso_tf.grid(row=4, column=2, pady=5)
frame3 = Frame(
frame
)
frame3.grid(row=5, columnspan=3, pady=10)
imc_btn = Button(
frame3,
text='IMC',
command=calcular_imc
)
imc_btn.pack(side=LEFT)
gordura_btn = Button(
frame3,
text='Gordura',
command=calcular_gordura
)
gordura_btn.pack(side=LEFT)
reset_btn = Button(
frame3,
text='Reset',
command=fazer_reset
)
reset_btn.pack(side=LEFT)
sair_btn = Button(
frame3,
text='Sair',
command=lambda: ws.destroy()
)
sair_btn.pack(side=RIGHT)
ws.mainloop()
The equation I use to calculate fat percentage is: fat percentage = (1.2 * IMC) + (0.23 * idade) -(10.8 * sexo) - 5.4. ‘IMC’ is BMI, ‘idade’ is age and ‘sexo’ is gender.
def calcular_gordura():
idade = int(idade_tf.get())
kg = int(peso_tf.get())
m = int(altura_tf.get()) / 100
imc = kg / (m * m)
imc = round(imc, 1)
gordura = (1.2*imc)+(0.23*idade)-(10.8*sexo)-5.4
gordura = round(gordura, 1)
percentual_de_gordura(gordura)
In ‘sexo’, I wanted the value assigned to be 1 if it’s male and 0 if it’s female.
The GUI I got uses two radio buttons: One for Masculino (Male) and one for Feminino (Female). But I’m not able to make them functional for the fat percentage equation.
masculino_rb = Radiobutton(
frame2,
text='Masculino',
variable=var,
value=1
)
masculino_rb.pack(side=LEFT)
feminino_rb = Radiobutton(
frame2,
text='Feminino',
variable=var,
value=0
)
feminino_rb.pack(side=RIGHT)
I tried to create an if and else condition, but I can't make the code understand the radio button selection.

The radio button values are being assigned to the variable var in your example. However, you need to extract the value by using var.get().
With this information in mind, you could set the sexo variable to be equal to var.get().
...
def calcular_gordura():
sexo = var.get()
idade = int(idade_tf.get())
kg = int(peso_tf.get())
m = int(altura_tf.get()) / 100
imc = kg / (m * m)
imc = round(imc, 1)
gordura = (1.2*imc)+(0.23*idade)-(10.8*sexo)-5.4
gordura = round(gordura, 1)
percentual_de_gordura(gordura)
...

Frozen cameras in OpenCV

I have tried to place two cameras to be able to take snapshots in both, I have even put a button to activate one and then the other but one way or another whenever I activate both together or deactivate one and activate the next one the window freezes. I attach the code that I was building if you have any suggestions on the matter I would greatly appreciate it. I have little knowledge of Python in general so keep it a little friendly.
from tkinter import *
from tkinter import Tk, Label, Frame, Entry, Button
from tkinter import ttk
from PIL import Image
from PIL import ImageTk
import cv2
import threading
import imutils
window0= Tk() #Pantalla inicial
window0.title('Detección del punto optimo de vacunación') #Titulo de la ventana
window0.geometry('1280x720') #Dimesiones de la ventana
window0.configure(bg='#35455d') #Color de fondo
tabControl = ttk.Notebook(window0)
tab1 = ttk.Frame(tabControl)
tab2 = ttk.Frame(tabControl)
tabControl.add(tab1, text ='Formulario')
tabControl.add(tab2, text ='Captura de webcam')
tabControl.pack(expand = 1, fill ="both")
#Pestaña 1
label_0 = Label(tab1, text="Formulario de Registro",width=20,font=("bold", 20))
label_0.place(x=90,y=53)
label_1 = Label(tab1, text="Edad",width=20,font=("bold", 10))
label_1.place(x=70,y=130)
entry_1 = Entry(tab1)
entry_1.place(x=240,y=130)
label_2 = Label(tab1, text="Genero",width=20,font=("bold", 10))
label_2.place(x=70,y=180)
var = IntVar()
Radiobutton(tab1, text="M",padx = 5, variable=var, value=1).place(x=235,y=180)
Radiobutton(tab1, text="F",padx = 20, variable=var, value=2).place(x=290,y=180)
def IMC():
try:
peso = int(entrada_texto.get())
estatura = int(entrada2_texto.get())
imc = peso/estatura**2
etiqueta5.config(text=imc)
except ValueError:
etiqueta5.config(text="Introduce un numero")
label_3 = Label(tab1, text="Estatura",width=20,font=("bold", 10))
label_3.place(x=70,y=230)
estatura= ""
entry_3 = Entry(tab1, textvariable=estatura)
entry_3.place(x=240,y=230)
label_4 = Label(tab1,text="Peso",width=20,font=("bold", 10))
label_4.place(x=70,y=280)
peso= ""
entry_4 =Entry(tab1, textvariable=peso)
entry_4.place(x=240,y=280)
# print('Su IMC es:¨{}'.format(indice))
label_5 = Label(tab1,text="IMC:",width=20,font=("bold", 10))
label_5.place(x=70,y=330)
entry_5 =Entry(tab1)
entry_5.place(x=240,y=330)
Button(tab1, text='Capturar Imagen',width=20,bg='brown',fg='white').place(x=580,y=560)
# it is use for display the registration form on the window
def iniciarcam1():
global cap
cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)
visualizar()
def iniciarcam2():
global cap1
cap1 = cv2.VideoCapture(0,cv2.CAP_DSHOW)
visualizar1()
def visualizar():
global cap
if cap is not None:
ret, frame = cap.read()
if ret == True:
frame = imutils.resize(frame, width=360)
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
im = Image.fromarray(frame)
img = ImageTk.PhotoImage(image=im)
lblVideo.configure(image=img)
lblVideo.image = img
lblVideo.after(20, visualizar)
else:
lblVideo.image = ""
cap.release()
def visualizar1():
global cap1
if cap1 is not None:
ret, frame = cap1.read()
if ret == True:
frame = imutils.resize(frame, width=360)
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
im = Image.fromarray(frame)
img = ImageTk.PhotoImage(image=im)
lblVideo1.configure(image=img)
lblVideo1.image = img
lblVideo1.after(20, visualizar)
else:
lblVideo1.image = ""
cap1.release()
def finalizarcam1():
global cap
if cap.isOpened():cap.release()
print("Camara 1 release")
def finalizarcam2():
global cap1
if cap1.isOpened():cap1.release()
print("Camara 2 release")
cap = None
cap1 = None
btnIniciar = Button(tab1, text="Iniciar CAM1", width=20, command=iniciarcam1)
# btnIniciar.grid(column=0, row=0, padx=5, pady=5)
btnIniciar.place(x=800,y=53)
btnFinalizar = Button(tab1, text="Finalizar CAM1", width=20, command=finalizarcam1)
# btnFinalizar.grid(column=1, row=0, padx=5, pady=5)
btnFinalizar.place(x=800,y=103)
btnIniciar = Button(tab1, text="Iniciar CAM2", width=20, command=iniciarcam2)
# btnIniciar.grid(column=0, row=0, padx=5, pady=5)
btnIniciar.place(x=1000,y=53)
btnFinalizar = Button(tab1, text="Finalizar CAM2", width=20, command=finalizarcam2)
# btnFinalizar.grid(column=1, row=0, padx=5, pady=5)
btnFinalizar.place(x=1000,y=103)
lblVideo = Label(window0)
lblVideo1 = Label(window0)
# lblVideo.grid(column=0, row=1, columnspan=2)
lblVideo.place(x=500,y=200)
lblVideo1.place(x=900,y=200)
#Pestaña 2
label2_0 = Label(tab2, text="Procesado",width=20,font=("bold", 20))
label2_0.place(x=90,y=20)
window0.mainloop()

I run code and it never freeze window.
The only mistake which I found is: you fogot 1 in word visualizar1 in line lblVideo1.after(20, visualizar) in function visualizar1 - so when you start second camera then after tries to run code for first camera and it can't update image for second camera and it may look like it freeze.

Python: calling function inside if statement from another File

I have an error in my program: "Taula_G3110 ()
NameError: name 'Taula_G3110' is not defined"
My question is:
I want to call a function that is inside an IF loop.This function is in another file. I have tried everything with imports:
"from Kleben_Tabelle import Taula_G3110, Taula_G3111.
import Kleben_Tabelle ", but there is no way.
Does anyone have an idea what I'm doing wrong?
Code:
from tkinter import *
from PIL import Image, ImageTk
from tkinter import ttk
from tkinter import messagebox
#from Kleben_Tabelle import *
import serial
import time
import PIL.Image
import Kleben_Tabelle
root = Tk()
root.geometry("1000x600")
# root.resizable (False,False)
root.title("Combobox")
arduino = serial.Serial("COM7", 9600)
time.sleep(0.1) # reducir el uso de la CPU.Prueba con diferentes valores (0.01 a 0.1)
def cambiar():
mes = combo.get()
if mes == "G3110":
label_resultat.configure(text=txt)
Taula_G3110()
if mes == "G3111":
label_resultat.configure(text=txt2)
Taula_G3111()
if mes == "G3112":
messagebox.showinfo("Mes", "Marzo")
def apagarLED():
arduino.write(b'4')
time.sleep(1)
def cerrarInterfaz():
# cerrar comunicación Serial
global raiz
arduino.close()
# cerrar ventana
root.destroy()
image = Image.open ('Edifici_Knauer_blau.png')
photo_image = ImageTk.PhotoImage(image)
label = Label(root, image=photo_image)
label.pack()
frame_resultat = Frame(root, width=400, height=100, relief="flat", highlightbackground="blue", highlightthickness=1)
frame_resultat.place(x=250, y=200)
label_resultat = Label(root, text="", bg="yellow", borderwidth=0, relief="groove", width=20, height=2, justify='left',
highlightbackground="blue", highlightthickness=1)
label_resultat.place(x=80, y=200)
etiqueta = Label(root, text="Zelle: Kleben")
etiqueta.place(x=100, y=40)
combo = ttk.Combobox(root, state="readonly")
combo.place(x=100, y=70)
combo["values"] = ("G3110", "G3111", "G3112", "1")
combo.current(0)
boton = Button(root, text="Cambiar mes", command=cambiar)
boton.place(x=100, y=100)
# boton de apagado del LED
btnApagar = ttk.Button(root, text="Reset", command=apagarLED)
# btnApagar = ttk.Button(raiz,text ="Reset",command = clearTextInput)
btnApagar.place(x=420, y=450)
# boton de Cerrar interfaz
btnCerrar = ttk.Button(root, text="Cerrar", command=cerrarInterfaz)
btnCerrar.place(x=420, y=480)
txt = ("G3110 Frontabdeckung")
txt2 = ("G3111 Frontabdeckung")
root.mainloop()
and this ist my other File with this Module-Function:(File: Kleben_Tabelle.py)
def Taula_G3110():
arduino.write(bytes(b'T'))
arbol = ttk.Treeview(frame_resultat,columns=("Bauteile","Regal","Lager"))
arbol.column ('#0',width=100)
arbol.column ('Bauteile',width=100)
arbol.column ('Regal',width=80)
arbol.column ('Lager',width=80)
arbol.insert("",END,text="G3110",values=("P6400","K2.0001.01","Regal 2"))
arbol.insert("",END,text="G3110",values=("P6406XA","K1.0004.01"))
arbol.insert("",END,text="G3110",values=("P6403XA","K1.0003.01"))
arbol.heading("#0",text="Model")
arbol.heading("Bauteile",text="Bauteile")
arbol.heading("Regal",text="Regal")
arbol.place(x=100,y=70)
arbol.pack()

In order to call a function in a module that you've imported, you need to reference the module and function like so:
import Kleben_Tabelle
...
def cambiar():
mes = combo.get()
if mes == "G3110":
label_resultat.configure(text=txt)
Kleben_Tabelle.Taula_G3110()

How to sum a Treeview's values in Tkinter

I'm developing a GUI where the idea is to add some values to a treeview (as a billing system) and then get the result or sum of all items' prices.
The button "Agregar" (Add in English) get the Entries' data and add them to the treevew; one of them if the amount of money to pay.
Now what I want, and haven't been able to get, is the sum of the values given in the treeview to be shown in the field or entry which is below the treeview when "Generar" (Generate in English) button is pressed.
Next, the code I got:
#!/usr/bin/python
#-*- coding:utf-8 -*-
from Tkinter import*
from ttk import Combobox, Treeview
from tkMessageBox import*
import MySQLdb
from controller import *
import math
class Gastos(Frame):
def __init__(self, parent, controller):
Frame.__init__(self, parent)
#INSTANCIAS
global cc, nombre, pago, ref, cod, desc, valor
#INSTANCIAS DE LOS WIDGETS
global e1, e2, e3, e4, e5, tree, l8
cc = IntVar()
nombre = StringVar()
pago = StringVar()
ref = StringVar()
cod = StringVar()
desc = StringVar()
valor = DoubleVar()
tbancos = ['Bancolombia', "Banco Bogotá", "Banco Agrario", "Banco Occidente"]
lupa = PhotoImage(file='img/lupa.png')
tbanktype = ['Corriente','Ahorro']
fpago = ['Efectivo','Transferencia']
resultado = DoubleVar()
#BUSQUEDA = ["Nombre","CC/Nit"]
busqueda = StringVar()
busqueda.trace("w", lambda name, index, mode: buscar())
dato = StringVar()
#WIDGETS
#========================= HEADER ==============================
self.titleL = Label(self, text="GASTOS", font="bold")
self.titleL.pack(pady=20, side=TOP)
#========================== WRAPPER ============================
self.wrapper = Frame (self)
self.wrapper.pack(side=LEFT, fill=Y)
#Esto centro el wrapper
#self.wrapper.pack(side=LEFT, fill=BOTH, expand=True)
#======================== BENEFICIARIO =======================
self.lf1 = LabelFrame(self.wrapper, text="Beneficiario")
self.lf1.pack(fill=X, ipady=5)
self.f0 = Frame(self.lf1)
self.f0.pack(pady=5, fill=X)#-----------------------------------
l1 = Label(self.f0, text='CC/Nit:')
l1.pack(side=LEFT)
e1 = Entry(self.f0, textvariable=cc)
e1.pack(side=LEFT)
b0 = Button(self.f0, text='Buscar:', image=lupa, command=buscarB)
b0.pack(side=LEFT)
l2 = Label(self.f0, text='Nombre:')
l2.pack(side=LEFT)
e2 = Entry(self.f0, textvariable=nombre)
e2.pack(side=LEFT, fill=X, expand=1)
self.f1 = Frame(self.lf1)
self.f1.pack(pady=5, fill=X)#-----------------------------------
l3 = Label(self.f1, text='Forma de Pago:')
l3.pack(side=LEFT)
Cbx = Combobox(self.f1, textvariable=pago, values=fpago, width=15)
Cbx.set('Efectivo')
Cbx.pack(side=LEFT)
l4 = Label(self.f1, text='Ref. Bancaria:')
l4.pack(side=LEFT)
e3 = Entry(self.f1, textvariable=ref)
e3.pack(side=LEFT, fill=X, expand=1)
b1 = Button(self.f1, text='Buscar:', image=lupa)
b1.image=lupa
b1.pack(side=LEFT)
#======================== CONCEPTO ========================
self.lf2 = LabelFrame(self.wrapper, text="Concepto")
self.lf2.pack(fill=X, ipady=5)
self.f2 = Frame(self.lf2)
self.f2.pack(pady=5, fill=X)#-------------------------------
l5 = Label(self.f2, text='Código:')
l5.pack(side=LEFT)
e4 = Entry(self.f2, textvariable=cod)
e4.pack(side=LEFT)
b2 = Button(self.f2, text='Buscar:', image=lupa, command=buscarC)
b2.pack(side=LEFT)
self.f3 = Frame(self.lf2)
self.f3.pack(pady=5, fill=X)#-------------------------------
l6 = Label(self.f3, text='Descripción:')
l6.pack(side=LEFT)
e5 = Entry(self.f3, textvariable=desc, state=DISABLED)
e5.pack(side=LEFT, fill=X, expand=1)
l7 = Label(self.f3, text='Valor:')
l7.pack(side=LEFT)
e6 = Entry(self.f3, width=15, textvariable=valor)
e6.pack(side=LEFT)
b3 = Button(self.f3, text='Agregar:', command=agregar)
b3.pack(side=LEFT)
#-------------------------- TREEVIEW ---------------------------
self.f4 = Frame(self.wrapper)
self.f4.pack(pady=5,fill=X)
tree = Treeview(self.f4, height=4, show="headings", columns=('col1','col2','col3'))
tree.pack(side=LEFT, fill=X, expand=1)
tree.column('col1', width=20, anchor='center')
tree.column('col2', width=200, anchor='center')
tree.column('col3', width=10, anchor='center')
tree.heading('col1', text='Código')
tree.heading('col2', text='Concepto')
tree.heading('col3', text='Valor')
scroll = Scrollbar(self.f4,orient=VERTICAL,command=tree.yview)
tree.configure(yscrollcommand=scroll.set)
#--------------------------------------------------------------
self.f5 = Frame(self.wrapper)
self.f5.pack(pady=5,fill=X)#-------------------
#RESULT MUST BE SHOWN HERE
l8 = Label(self.f5, text=resultado, fg="red", bg="white", anchor='e', font="bold, 22", relief= SUNKEN)
l8.pack(fill=X, side=RIGHT, expand=1)
#l8.set("link")
self.fBtn = Frame(self.wrapper)
self.fBtn.pack()#-------------------------------
clean = Button(self.fBtn, text='Cancelar', bg='navy', foreground='white', activebackground='red3', activeforeground='white', command=limpiar)
clean.pack(side=RIGHT)
update = Button(self.fBtn, text='Actualizar', bg='navy', foreground='white', activebackground='red3', activeforeground='white', state=DISABLED)
update.pack(side=RIGHT)
add = Button(self.fBtn, text='Generar', bg='navy', foreground='white', activebackground='red3', activeforeground='white', command=generar)
add.pack(side=RIGHT)
#========================= ASIDE ===========================
self.aside = Frame(self)
self.aside.pack(side=TOP, fill=BOTH)
self.wrap1 = Frame(self.aside)
self.wrap1.pack()
self.viewer = Label(self.wrap1, text="LISTA DE GASTOS")
self.viewer.pack()
scroll = Scrollbar(self.wrap1, orient=VERTICAL)
scroll.pack(side=RIGHT, fill=Y)
lb = Listbox(self.wrap1, yscrollcommand=scroll.set, height=20, width=30)
scroll.config (command=lb.yview)
lb.pack(fill=BOTH)
lb.bind("<Double-Button-1>", callback)
self.wrap2 = Frame(self.aside)
self.wrap2.pack()
load = Button(self.wrap2, text='Cargar lista', bg='navy', foreground='white', activebackground='red3', activeforeground='white', command=cargar_lista)
load.pack(fill=X)
delete = Button(self.wrap2, text='Borrar', bg='navy', foreground='white', activebackground='red3', activeforeground='white', command=borrar)
delete.pack(fill=X)
edit = Button(self.wrap2, text='Modificar', bg='navy', foreground='white', activebackground='red3', activeforeground='white', command=modificar)
edit.pack(fill=X)
buscador = Label(self.wrap2, text="Buscar por Número:")
buscador.pack()
E = Entry(self.wrap2, textvariable=busqueda, width=24)
E.pack()
E.bind("<KeyRelease>", caps)
def cargar_lista():
try:
connect.commit()
display = "SELECT g_num FROM detalles order by g_num;"
cursor.execute(display)
registros = cursor.fetchall()
lb.delete(0, END)
for item in registros:
#print item
num = item[0]
lb.insert(END, num)
except:
showerror("Mensaje", "Ha ocurrido un error")
# NUEVO / CANCELAR
def limpiar():
tree.delete(*tree.get_children())
pass
def agregar():
v1 = cc.get()
v2 = None
v3 = cod.get()
v4 = desc.get()
v5 = valor.get()
tree.insert('', 0, values=(v3,v4,v5))
#FUNCTION THAT GIVE THE VALUES
def generar():
children = tree.get_children()#OBTIENE LOS iid DE LOS ITEMS
for child in children:
i = tree.item(child, 'values')[2]#OBTIENE LOS VALORES DE LOS ITEMS
print i
def borrar():
pass
def bloquear():
pass
def callback(event):
llenar_campos()
def llenar_campos():
pass
def habilitar():
pass
def modificar():
pass
def actualizar():
pass
def buscar():
pass
def buscarB():
connect.commit()
try:
v = cc.get()
sql = "SELECT b_nombre from beneficiarios WHERE b_cc='%d';" % (v)
cursor.execute(sql)
query = cursor.fetchone()
for n in query:
nombre.set(n)
except TypeError, e:
showerror("Error", e)
except MySQLdb.IntegrityError, e:
showerror("Error", e)
def buscarC():
connect.commit()
try:
v = cod.get()
sql = "SELECT cg_nombre from concepto_gastos WHERE cg_cod='%s';" % (v)
cursor.execute(sql)
query = cursor.fetchone()
for n in query:
desc.set(n)
except TypeError, e:
showerror("Error", e)
except MySQLdb.IntegrityError, e:
showerror("Error", e)
except:
showerror ("Mensaje", "No se encuentra!")
# CONVIERTE LA ENTRADA DE LOS ENTRIES EN MAYÚSCULA
def caps(event):
pass
The code is not finished, that's why it has so much info. But next function is what give me the values I need to be sum:
def generar():
children = tree.get_children()#OBTIENE LOS iid DE LOS ITEMS
for child in children:
i = tree.item(child, 'values')[2]#OBTIENE LOS VALORES DE LOS ITEMS
print i
By the way, this file is called by another (home.py) to interact with it.
If anyone could give me a hand this problem, you'll save a life. Thanks for your time, look on this, and anything you could answer. Sorry for my English if it is not good.

You have to convert string to float and then you can add to variable ie. total
def generar():
total = 0.0
for child in tree.get_children():
total += float(tree.item(child, 'values')[2])
print total
But you could add value even in agregar to get total with using button
# create global variables
total = 0.0
# or
total_var = DoubleVar()
def agregar():
# inform function to use external/global variable when you use `+=`
global total
v1 = cc.get()
v2 = None
v3 = cod.get()
v4 = desc.get()
v5 = valor.get()
total += v5
# or
total_var.set(total_var.get() + v5)
tree.insert('', 0, values=(v3,v4,v5))
Full working example
import Tkinter as tk
import ttk
# --- functions ---
def agregar(v3, v4, v5):
tree.insert('', 0, values=(v3,v4,v5))
def generar():
total = 0.0
for child in tree.get_children():
total += float(tree.item(child, 'values')[2])
print total
result['text'] = 'Total: {}'.format(total)
# --- main ---
root = tk.Tk()
tree = ttk.Treeview(root, height=4, show="headings", columns=('col1','col2','col3'))
tree.pack()
tree.heading('col1', text='Código')
tree.heading('col2', text='Concepto')
tree.heading('col3', text='Valor')
add = tk.Button(root, text='Generar', command=generar)
add.pack()
result = tk.Label(root, text='Total: 0')
result.pack()
agregar("1", "AAA", 1.11)
agregar("2", "BBB", 2.22)
agregar("3", "CCC", 3.33)
root.mainloop()

The reason you are getting PY_VAR240 is because your code is trying to display an object instead of a value.
There is already an answer here that hints at the issue as well: Python Tkinter Treeview - Iterating 'get_children' output
Also here is how I get the values from a row:
rowItem = treeSomeTree.item(itemID)
itemDictionary = rowItem['values']
someVariable = itemDictionary[0]
Note the item id variable represents row item identifier which may or may not be a number and must be unique. The treeview .insert defaults to None (iid=None) if not specified.
By specifying the iid as an integer value as you inert rows you will always know which row you have (or need to get) to summarize.

tkinter labels dont show

So I got the assignment to make a small Bingo App (Windows btw) after I followed a few webinars on Tkinter GUI and some Googling.
I have made successfull little apps that worked correctly, but this time I try to make it with knowledge I think I have.
Anyway, in that Bingo app, I want 50 labels that represent 50 numbers of the Bingo card, 5 rows of 10 numbers.
I know how to align them, but they need to show up first.
Can you look at my code and assess what I do wrong?
Ignore the many Dutch comments :)
'''
iWMMMM0.
XM#o:..iIMM.
MM. :XC17, YM8
M# v#9. .W# ,M,
#M 7#i ,0$: M0 MM
.M. #7 M#t, ME MQ
MM iM. #$Ci$Q ;M#CCY:.
CM ,M, b#$; v;7IEW#MMM#1
MQ WQ .tE0Q2nCCYc;i,:7#MMi
:M #b . .. .:YCb0U: YMM.
WM E#i .... ,i: ,b#; bMQ,SbW06i
oM MC ... MME9#$Y . .#b SM#b2tob#MM1
Mi #7 ... #M .v iMt ... #X :CoUzt: :MM, nWM#Bc :nQ#$Ui
M: #Y .. M9 MM# b# ... Zb1#Zi. .;Z#Y SMi MM#t;vCMM,CMM0C77bMM8
M, #7 .. #6 Y7 ;Mn ... #QB. ,#b ZM MM .n9U; bMM. ;z2U7 MM
M: #Y ., #9.;tQQv ... ;MQ, :#; Mv MM X$: M; , ;$2. 7#i M8
M: #7 .. #BW1i ..,:Y$Mt$ MX MMtiEM: E#: ZME,.W$c ; c# .M
M: #Y ., ME .. .ZMM8o89 QM. i;U## .Zb7: ,BBYzQ bM# Mi M
Mi #X .. M, iMM#WS :bWQb, ,#M1;IoIX 1#c bMMX iM I#E$CM M, M
.MM #7 ., Mn EM8AEE#: . v$AWQ#$Q#MMIWz, ;$Z$ MMzW2 M# $ZY$C bM CM
MZ ib#i .. ##. ;t $z#. ., CWUWnE$b7: :Y #$c MEYY .MM8 :; vM. M1
iM iMi .., #bWI,..M#i#C .., Mv i#E. UMM2 #BC oC;tMMCES .#M MM
MY E0 ... S#i:Z$MZ .Mv ... M8 7WEz MnZo #obUA: ic.7bEW$#M#C iMM
CMi I#; .. b#; $$ ... ,MQ 7$Zz #zbz #IXW#E69z. 80 ::iAMM;
iM$ .$Qi . :Z$Q0Q#6. ... MQ0 C$b1 MtQ7 YZWW,.c$## MC MMM#b.
MM7 iBWv. .., .M#7$ v$8; vQ0:iCAM: :#bM0 nMU BM
:MM1 .6$Q7: ;MMS:Q7 ##i12EMzEESB# .7:,,2M# MM
,MM#: ,1E$BQbZ6EBMM#; iQQ##B$72n7i.,vo tQQIZQ$WC .#MQ
6MM#o;,,:ivY;i,,iEMM...,,:iC2Q#MMMQ$M$..,i::,;9MMZ
YIEbEAU269086, ;Bb08bAz;:. 7QbEZb8boi
'''
##Basale geimporteerde functies
from tkinter import*
#self=()
#Importeert de randomfucntie
#import random
#Importeert de Python Debugger
#Runnen met pdb.run
#import pdb
#Importeert de PIL Python Image Library
#from PIL import Image, ImageTK
#image = image.open("bestandsnaam.jpg")
#photo ImageTK.PhotoImage(image)
#Een afbeelding op een label
#label = Label(image=photo(als photo de naam van de variable is))
#label.image = photo (bewaren als referentie?<- geen idee nog)
'''
#=# Start van metainfo class/klasse
class MetaBingPy():
def __init__(self):
super(MetaBingPy, self).__init__()
self.parent = parent
self.pack()
MetaBingPy.BingoPyC(self)
##Functie voor random number generator
def BingoPyC:
self.root = Tk()
self.root.title("Python Bingo")
#=#Einde metainfo class
'''
###def random.randint(1,50)
#####of# randrange(1,50)
##GUI voor BingPy, moet root heten. Geen eigen naam, zoals:
##BingPyGUI wat ik had.
root = Tk()
root.wm_title("Bingo Python")
root.wm_maxsize("800","600")
root.wm_minsize("800","600")
#root.wm_grid(baseWidth="800", baseHeight="800")
#root.grid("800x800")
#_tkinter.TclError: wrong # args: should be "wm grid window ?baseWidth baseHeight
#widthInc heightInc?"
##self.title="Bingo Python"
###GUI voor BingPy code, altijd afsluiten met:
###bovenaan
root.mainloop()
'''
#Algemene Python Bingo klasse
class BingoPy
def
'''
#Labels voor alle nummers (50)
label1 = Label(root, text="1jghjgjkhjhg")
label1.grid()
label1.pack()
label2 = Label(root, text="2")
label2.grid()
label2.pack()
label3 = Label(root, text="3")
label3.grid()
label3.pack()
label4 = Label(root, text="4")
label4.grid()
label4.pack()
label5 = Label(root, text="5")
label5.grid()
label5.pack()
label6 = Label(root, text="6")
label6.grid()
label6.pack()
label7 = Label(root, text="7")
label7.grid()
label7.pack()
label8 = Label(root, text="8")
label8.grid()
label8.pack()
label9 = Label(root, text="9")
label9.grid()
label9.pack()
label10 = Label(root, text="10")
label10.grid()
label10.pack()
label11 = Label(root, text="11")
label11.grid()
label11.pack()
label12 = Label(root, text="12")
label12.grid()
label12.pack()
Label13 = Label(root, text="13")
Label13.grid()
Label13.pack()
label14 = Label(root, text="14")
label14.grid()
label14.pack()
label15 = Label(root, text="15")
label15.grid()
label15.pack()
label16 = Label(root, text="16")
label16.grid()
label16.pack()
label7 = Label(root, text="17")
label17.grid()
label17.pack()
label18 = Label(root, text="18")
label18.grid()
label18.pack()
label19 = Label(root, text="19")
label19.grid()
label19.pack()
label20 = Label(root, text="20")
label20.grid()
label20.pack()
label21 = Label(root, text="21")
label21.grid()
label21.pack()
label22 = Label(root, text='22')
label22.grid()
label22.pack()
label23 = Label(root, text="23")
label23.grid()
label23.pack()
label24 = Label(root, text="24")
label24.grid()
label24.pack()
label25 = Label(root, text="25")
label25.grid()
label25.pack()
label26 = Label(root, text="26")
label26.grid()
label26.pack()
label27 = Label(root, text="27")
label27.grid()
label27.pack()
label28.Label(root, text="28")
label28.grid()
label28.pack()
label29 = Label(root, text="29")
label29.grid()
label29.pack()
label30 = Label(root, text="30")
label30.grid()
label30.pack()
label31 = Label(root, text="31")
label31.grid()
label31.pack()
label32 = Label(root, text="32")
label32.grid()
label32.pack()
label33 = Label(root, text="33")
label33.grid()
label33.pack()
label34 = Label(root, text="34")
label34.grid()
label34.pack()
label35 = Label(root, text="35")
label35.grid()
label35.pack()
label36 = Label(root, text="36")
label36.grid()
label36.pack()
label37 = Label(root, text="37")
label37.grid()
label37.pack()
label38 = Label(root, text="38")
label38.grid()
label38.pack()
label39 = Label(root, text="39")
label39.grid()
label39.pack()
label40 = Label(root, text="40")
label40.grid()
label40.pack()
label41 = Label(root, text="41")
label41.grid()
label41.pack()
label42 = Label(root, text="42")
label42.grid()
label42.pack()
label43 = Label(root, text="43")
label43.grid()
label43.pack()
label44 = Label(root, text="44")
label44.grid()
label44.pack()
label45 = Label(root, text="45")
label45.grid()
label45.pack()
label46 = Label(root, text="46")
label46.grid()
label46.pack()
label47 = Label(root, text="47")
label47.grid()
label47.pack()
label48 = Label(root, text="48")
label48.grid()
label48.pack()
label49 = Label(root, text="49")
label49.grid()
label49.pack()
label50 = Label(root, text="50")
label50.grid()
label50.pack()
#Maakt het rood (en als het mogelijk is: doorstrepen) als het getrokken is
#Waarde-return in veld + niet meer zelfde nummer kunnen kiezen
#--------------------------------------------------------------------------
#Knoppen voor afsluiten en nieuw getal
##Afsluiten
#def bingoclose():
# print("Bingo Afsluiten")
'''
bAfsluiten = Button(root,text"Sluit Bingo Af")
bAfsluiten.pack()
'''
'''
{
'title' : ['BingPy'],
'summary' : ['Simple Bingo Python Application with rand.num generator'],
'authors' : ['Thomas']
#'date' : ['2015']
'base_url' : ['http://www.rainydays.eu']
}
'''
'''
Info en weblinks:
https://docs.python.org/3/library/random.html?highlight=random#module-random
http://infohost.nmt.edu/tcc/help/pubs/tkinter/tkinter.pdf (Python 2.7!)
https://wiki.scinet.utoronto.ca/wiki/images/4/41/Pwcgui.pdf
http://stackoverflow.com/questions/3643235/how-to-add-a-margin-to-a-tkinter
-window Margins in Python (padx, pady)
'''

You need to learn about data structures, like list.
You had root.mainloop() early on in the code. That starts a loop. Nothing after that is executed until the window is closed, which means it has to be at the end.
Choose one geometry manager. You can't use both grid() and pack() in the same parent widget, much less on the same child widget.
You had some typos, like label7 = instead of label17 =, and label28.Label instead of label28 = Label. Most of these would never have happened if you had used a list.
Obviously, 50 labels won't fit in a single column in a window of that size. You've got some decisions ahead of you involving window size, label placement, possible scrollbar, and so on.
The resulting code taking into account all these points (except the last) is shown below.
from tkinter import *
root = Tk()
root.wm_title("Bingo Python")
root.wm_maxsize("800","600")
root.wm_minsize("800","600")
labels = [Label(root, text=i) for i in range(1, 51)]
for label in labels:
label.pack()
root.mainloop()