print queries quantity in django

print_queries_quantity_decorator.py

from django.db import connection


def print_queries_quantity(func):

    def wrapper(self, *args, **kwargs):
        old = len(connection.queries)
        ret = func(self, *args, **kwargs)
        quantity = len(connection.queries) - old
        print '%d queries in %s' % (quantity, func.__name__)
        return ret
    return wrapper

#example

@print_queries_quantity
def get_object(self):
    obj = None
    # make queries
    return obj

# output example
# 10 queries in get_object