From d3d95d645fc9f36355d27598475612de43587db1 Mon Sep 17 00:00:00 2001
From: saeedblanchette <33104967+saeedblanchette@users.noreply.github.com>
Date: Tue, 11 May 2021 04:02:25 +0000
Subject: [PATCH] Refs #24121 -- Added __repr__() to Lookup.

---
 django/db/models/lookups.py  |  3 +++
 tests/lookup/test_lookups.py | 17 +++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/django/db/models/lookups.py b/django/db/models/lookups.py
index 8d3648b393..defa566f21 100644
--- a/django/db/models/lookups.py
+++ b/django/db/models/lookups.py
@@ -40,6 +40,9 @@ class Lookup:
             value = transform(value)
         return value
 
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.lhs!r}, {self.rhs!r})'
+
     def batch_process_rhs(self, compiler, connection, rhs=None):
         if rhs is None:
             rhs = self.rhs
diff --git a/tests/lookup/test_lookups.py b/tests/lookup/test_lookups.py
index 4d90612048..6dfcf75943 100644
--- a/tests/lookup/test_lookups.py
+++ b/tests/lookup/test_lookups.py
@@ -20,6 +20,23 @@ class LookupTests(SimpleTestCase):
         self.assertNotEqual(lookup, Lookup(Value(3), lookup.rhs))
         self.assertNotEqual(lookup, CustomLookup(lookup.lhs, lookup.rhs))
 
+    def test_repr(self):
+        tests = [
+            (Lookup(Value(1), Value('a')), "Lookup(Value(1), Value('a'))"),
+            (
+                YearLookup(
+                    Value(datetime(2010, 1, 1, 0, 0, 0)),
+                    Value(datetime(2010, 1, 1, 23, 59, 59)),
+                ),
+                'YearLookup('
+                'Value(datetime.datetime(2010, 1, 1, 0, 0)), '
+                'Value(datetime.datetime(2010, 1, 1, 23, 59, 59)))'
+            ),
+        ]
+        for lookup, expected in tests:
+            with self.subTest(lookup=lookup):
+                self.assertEqual(repr(lookup), expected)
+
     def test_hash(self):
         lookup = Lookup(Value(1), Value(2))
         self.assertEqual(hash(lookup), hash(lookup))