I am trying to validate my fields in a more efficient way and I think I am on the right track, but I have a problem with the for loop, the code is as follows First of all I manage all the fields through dictionaries listaCondicion = { "nombre" : {"min":3}, "apellido" : {"min":4}, "cedula" : {"min":7, "query":consulta.verficarCedula, "param":[f"{tipoCedula.value}-{cedula.value}",], "msj":"Esta cedula ya esta ligada a un usuario"}, "numTelefono" : {"min":7, "query":consulta.verficarNumero, "param":[f"{codigoTelefono.value}-{numTelefono.value}",], "msj":"Este numero de telefono ya esta asignado a un usuario"}, "correo" : {"min":3, "query":consulta.verificarCorreo, "param":[f"{correo.value}{tipoCorreo.value}",], "msj":"Este correo ya esta en uso"}, "ubicacion" : {"min":3, "query":consulta.verficarUbicacion, "param":[ubicacion.value,], "msj":"Esta ubicacion ya esta en uso"}, "nivelUser" : {"min":4}, "tipoCorreo" : {"min":4}, "codigoTelefono" : {"min":4} } Then I go through that dictionary with a for and pass it values that are inside todoValido = True print(todoValido) for nombreCampo, config in listaCondicion.items(): if bool(validaciones.validarCampos(page, eval(nombreCampo), config["min"])) == True: print("entro en la validacion de campos") todoValido = False if "query" in config: if bool(validaciones.validarConsultas(page, config["query"], config["param"], config["msj"])) or todoValido == True: todoValido = False print("paso por validacion de la consulta") else: print("no paso nada") print(todoValido) if todoValido == True: print("pasaste a la siguiente seccion del formulario") print() In the interface you can see that it apparently works correctly, but I put some print in it to better follow the cycle and it always gives me this result True no paso nada no paso nada paso por consulta no paso nada no paso nada no paso nada False I don't know what to do, it always omits the first condition, and if all the fields are correctly validated it doesn't let me go to the next form This is the class I use to validate in case you need it class validaciones: #CONDICIONES condicionAlfanum = r"^[0-9A-Za-z]*$" condicionEspacio = r"^[^\s]+$" def validarCampos(page, campo, min): if not campo.value: campo.error_text = mensaje.campoFaltante page.update() return False elif len(campo.value) < min: campo.error_text = mensaje.minimoCaracteres(min) page.update() return False def validarConsultas(page, consulta, parametros, mensaje): if db.consultaConRetorno(consulta, parametros): page.snack_bar = SnackBar(content=Text(mensaje)) page.snack_bar.open = True page.update() return False I hope you can help me, if I can make it work I will be able to apply it to all my code, thanks in advance Continue reading...