join problem in django

bonjour la communauté Django
je suis débutant en Django et j’ai un problème de jointure entre ces tables ci

class patient(models.Model):
choix = (
    (0, 0),
    (1, 1),
    (0.1, 0.1),
    (0.15, 0.15),
    (0.2, 0.2),
    (0.25, 0.25),
    (0.3, 0.3),
    (0.4, 0.4),
    (0.5, 0.5),
    (0.6, 0.6),
    (0.7, 0.7),
    (0.8, 0.8),
    (0.9, 0.9),

numero_telephone=models.CharField(max_length=30, null=True)
adresse=models.CharField(max_length=100, null=True)
matricule=models.CharField(max_length=200,default="Pas de matricule",null=True)
assurance=models.CharField(max_length=200,default="Non assuré",null=True)
compagnie=models.CharField(max_length=200,default="Pas de compagnie",null=True)
pourcentage = models.FloatField(max_length=20,default='Pas de pourcentage',null=True, choices=choix)
def __str__(self):
    return self.Nom_patient

class labo(models.Model):
patient=models.ForeignKey(patient, null=True, on_delete=models.SET_NULL,related_name=‘labos’)

def str(self):
return self.libelle_labo

class specialite(models.Model):
patient=models.ForeignKey(patient, null=True, on_delete=models.SET_NULL,related_name=‘specialistes’)

class generalister(models.Model):
patient = models.ForeignKey(patient, null=True, on_delete=models.SET_NULL,related_name=‘generalisters’)
def str(self):
return self.libelle_generaliste

In fact, I want to get all the activities of a patient, further put these three tables in relation.
I’m not sure what to do about it, but I’m sure it’s a good idea to have a look at it.

def recu(request):

return render(request,‘recu/recu.html’,context)

Can anyone help me?

When posting code here, please enclose it between lines consisting of three backtick - ` characters. This means you’ll have a line of ```, then your code, then another line of ```. This is necessary to keep the forum software from mangling your code.

If you’re getting some kind of error, please post the complete traceback that you’re getting from your code.

If there’s not an error, we’re going to need a more detailed explanation as to what you’re trying to do, and exactly where you’re having a problem.