--- ../x/env/lib/python2.7/site-packages/django/db/models/query.py	2017-04-07 15:10:29.426831000 -0700
+++ env/lib/python2.7/site-packages/django/db/models/query.py	2017-04-07 15:18:39.938521412 -0700
@@ -5,6 +5,8 @@
 import copy
 import sys
 import warnings
+import inspect
+import logging
 from collections import OrderedDict, deque
 
 from django.conf import settings
@@ -34,6 +36,7 @@
 # Pull into this namespace for backwards compatibility.
 EmptyResultSet = sql.EmptyResultSet
 
+logger = logging.getLogger('django.db.backends')
 
 class BaseIterable(object):
     def __init__(self, queryset):
@@ -51,6 +54,7 @@
         compiler = queryset.query.get_compiler(using=db)
         # Execute the query. This will also fill compiler.select, klass_info,
         # and annotations.
+
         results = compiler.execute_sql()
         select, klass_info, annotation_col_map = (compiler.select, compiler.klass_info,
                                                   compiler.annotation_col_map)
@@ -174,6 +178,8 @@
         self._known_related_objects = {}  # {rel_field, {pk: rel_obj}}
         self._iterable_class = ModelIterable
         self._fields = None
+        self._origin = []
+        self._djangodir = __file__[:(__file__.index('django')+len('django')+1)]
 
     def as_manager(cls):
         # Address the circular dependency between `Queryset` and `Manager`.
@@ -316,6 +322,37 @@
         combined.query.combine(other.query, sql.OR)
         return combined
 
+    def _add_origin(self, depth=1):
+        if settings.DEBUG:
+            # get list of frame records.  Each is:
+            # [ frame, filename, lineno, function, code_context, index ]
+            stack = inspect.stack()
+            # caller stack record
+            method = stack[depth][3]
+            # look for the first stack entry which is not from django
+            i = 0
+            while i<len(stack) and stack[i][1].startswith(self._djangodir) and not stack[i][3] == 'render':
+                i += 1
+            if i<len(stack):
+                stack = stack[i:]
+                frame = stack[0][0]
+                function = stack[0][3]
+                if function == 'render' and 'context' in frame.f_locals:
+                    that = frame.f_locals['self']
+                    if hasattr(that, 'filename'):
+                        import debug
+                        debug.show('that.filename')
+                self._origin += [stack[0]+(method,), ]
+            else:
+                self._origin += [stack[2]+(method,), ]
+
+    def _log_origin(self):
+        if settings.DEBUG:
+            self._add_origin(depth=3)
+            for place in self._origin:
+                frame, filename, lineno, function, code_context, index, method = place[:7]
+                logger.debug("QuerySet: %s(%s) in %s: %s()\n %s", filename, lineno, function, method, code_context[index].rstrip())
+
     ####################################
     # METHODS THAT DO DATABASE QUERIES #
     ####################################
@@ -793,6 +830,7 @@
         Returns a new QuerySet instance with the args ANDed to the existing
         set.
         """
+        self._add_origin()
         return self._filter_or_exclude(False, *args, **kwargs)
 
     def exclude(self, *args, **kwargs):
@@ -800,6 +838,7 @@
         Returns a new QuerySet instance with NOT (args) ANDed to the existing
         set.
         """
+        self._add_origin()
         return self._filter_or_exclude(True, *args, **kwargs)
 
     def _filter_or_exclude(self, negate, *args, **kwargs):
@@ -824,6 +863,7 @@
         This exists to support framework features such as 'limit_choices_to',
         and usually it will be more natural to use other methods.
         """
+        self._add_origin()
         if isinstance(filter_obj, Q) or hasattr(filter_obj, 'add_to_query'):
             clone = self._clone()
             clone.query.add_q(filter_obj)
@@ -836,6 +876,7 @@
         Returns a new QuerySet instance that will select objects with a
         FOR UPDATE lock.
         """
+        self._add_origin()
         obj = self._clone()
         obj._for_write = True
         obj.query.select_for_update = True
@@ -855,6 +896,7 @@
         if self._fields is not None:
             raise TypeError("Cannot call select_related() after .values() or .values_list()")
 
+        self._add_origin()
         obj = self._clone()
         if fields == (None,):
             obj.query.select_related = False
@@ -874,6 +916,7 @@
         prefetch is appended to. If prefetch_related(None) is called, the list
         is cleared.
         """
+        self._add_origin()
         clone = self._clone()
         if lookups == (None,):
             clone._prefetch_related_lookups = []
@@ -886,6 +929,7 @@
         Return a query set in which the returned objects have been annotated
         with extra data or aggregations.
         """
+        self._add_origin()
         annotations = OrderedDict()  # To preserve ordering of args
         for arg in args:
             # The default_alias property may raise a TypeError, so we use
@@ -929,6 +973,7 @@
         """
         assert self.query.can_filter(), \
             "Cannot reorder a query once a slice has been taken."
+        self._add_origin()
         obj = self._clone()
         obj.query.clear_ordering(force_empty=False)
         obj.query.add_ordering(*field_names)
@@ -940,6 +985,7 @@
         """
         assert self.query.can_filter(), \
             "Cannot create distinct fields once a slice has been taken."
+        self._add_origin()
         obj = self._clone()
         obj.query.add_distinct_fields(*field_names)
         return obj
@@ -951,6 +997,7 @@
         """
         assert self.query.can_filter(), \
             "Cannot change a query once a slice has been taken"
+        self._add_origin()
         clone = self._clone()
         clone.query.add_extra(select, select_params, where, params, tables, order_by)
         return clone
@@ -959,6 +1006,7 @@
         """
         Reverses the ordering of the QuerySet.
         """
+        self._add_origin()
         clone = self._clone()
         clone.query.standard_ordering = not clone.query.standard_ordering
         return clone
@@ -973,6 +1021,7 @@
         """
         if self._fields is not None:
             raise TypeError("Cannot call defer() after .values() or .values_list()")
+        self._add_origin()
         clone = self._clone()
         if fields == (None,):
             clone.query.clear_deferred_loading()
@@ -992,6 +1041,7 @@
             # Can only pass None to defer(), not only(), as the rest option.
             # That won't stop people trying to do this, so let's be explicit.
             raise TypeError("Cannot pass None as an argument to only().")
+        self._add_origin()
         clone = self._clone()
         clone.query.add_immediate_loading(fields)
         return clone
@@ -1078,13 +1128,17 @@
         clone._known_related_objects = self._known_related_objects
         clone._iterable_class = self._iterable_class
         clone._fields = self._fields
+        clone._origin = self._origin
 
         clone.__dict__.update(kwargs)
         return clone
 
     def _fetch_all(self):
         if self._result_cache is None:
+            self._log_origin()
             self._result_cache = list(self.iterator())
+            if settings.DEBUG:
+                connections[self.db].queries_log[-1]['origin'] = self._origin
         if self._prefetch_related_lookups and not self._prefetch_done:
             self._prefetch_related_objects()