IF / THEN的Python语法与PHP相比

 if($id = $this->ci->srr->check_faca_indiv($name))
{
    return $id;
} elseif($id = $this->_addIndiv($name)) {
    return $id;
} else {
    return null;

indiv_id = checkIndiv(name)
if indiv_id != None:
    return indiv_id
indiv_id = addIndiv(name)
if indiv_id != None:
    return indiv_id
else:
    return None

return checkIndiv(name) or addIndiv(name)

if (null) return null;

indiv_id = checkIndiv(name)
if indiv_id:
    return indiv_id
else:
    return addIndiv(name)

None

is

==

def check_or_add(name):
    try:
        return checkIndiv(name)
    except CheckException:
        return addIndiv(name)

True

False

id = get_indiv(name)
if id:
    return id
else:
    return new_indiv(name)

return get_indiv(name) or new_indiv(name)