Threads with Django App. Server: Without CRON or Other External Service
from threading import Thread

class afegeixThread(Thread):

    def __init__ (self,usuari, expandir=None, alumnes=None,
                  impartir=None, matmulla = False):
        Thread.__init__(self)
        self.expandir = expandir
        self.alumnes = alumnes
        self.impartir = impartir
        self.flagPrimerDiaFet = False
        self.usuari = usuari
        self.matmulla = matmulla

    def run(self):
        errors = []
        try:
           ...
           self.flagPrimerDiaFet = ...
           ...

    def firstDayDone(self):
        return self.flagPrimerDiaFet

from presencia.afegeixTreuAlumnesLlista import afegeixThread
    afegeix=afegeixThread(expandir = expandir, alumnes=alumnes,
                          impartir=impartir, usuari = user, matmulla = matmulla)
    afegeix.start()

    #Waiting for first day done before return html:
    import time
    while afegeix and not afegeix.firstDayDone(): time.sleep(  0.5 )

    #return html code
    return HttpResponseRedirect('/presencia/passaLlista/%s/'% pk )