Immediate evaluation of a QuerySet vs lazy

base_set.py

# This way executes two queries because if not evaluates the base_set argument
def execute_query(base_set=None):
  if not base_set: # Eecutes the queryset thrown in
    base_set = YourObject.objects
    
   base_set.filter(pk=1) #this is where the queryset should be executed
  
 # Checking with is None does not evaulate the given base_set
def execute_query(base_set=None):
  if base_set is None: # Does not execute the given queryset.
     base_set = YourObject.objects
    
   base_set.filter(pk=1)