From f5c03878b1386bfc7882b8af6fe97d22655a7937 Mon Sep 17 00:00:00 2001
From: Amrita kumari mishra <amritamishraxa06@gmail.com>
Date: Sun, 23 Nov 2025 19:19:15 +0000
Subject: [PATCH 1/2] Fix: Ensure empty lists in params are encoded as empty
 keys #6557

---
 src/requests/models.py |  9 ++++++++-
 tests/test_requests.py | 15 +++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/requests/models.py b/src/requests/models.py
index c4b25fa079..4e38f86ae5 100644
--- a/src/requests/models.py
+++ b/src/requests/models.py
@@ -119,8 +119,15 @@ def _encode_params(data):
         elif hasattr(data, "__iter__"):
             result = []
             for k, vs in to_key_val_list(data):
-                if isinstance(vs, basestring) or not hasattr(vs, "__iter__"):
+                if isinstance(vs, (str, bytes)) or not hasattr(vs, '__iter__'):
                     vs = [vs]
+                
+                # --- START FIX ---
+                # If vs is an empty list [], treat it as [''] so it yields one empty key
+                if not vs:
+                    vs = ['']
+                # --- END FIX ---
+
                 for v in vs:
                     if v is not None:
                         result.append(
diff --git a/tests/test_requests.py b/tests/test_requests.py
index 75d2deff2e..71a589bb14 100644
--- a/tests/test_requests.py
+++ b/tests/test_requests.py
@@ -119,6 +119,21 @@ def test_basic_building(self):
         assert pr.url == req.url
         assert pr.body == "life=42"
 
+    def test_params_with_empty_list_are_included(self):
+        """
+        Regression test for #6557: Ensure empty lists in params 
+        result in the key being present in the URL (e.g. key=).
+        """
+        url = 'http://example.com'
+        params = {'key': []}
+        req = requests.Request('GET', url, params=params)
+        prep = req.prepare()
+        
+        # Check if the key is present with an empty value
+        assert 'key=' in prep.url
+        # Check that it didn't literally print the brackets
+        assert 'key=[]' not in prep.url
+         
     @pytest.mark.parametrize("method", ("GET", "HEAD"))
     def test_no_content_length(self, httpbin, method):
         req = requests.Request(method, httpbin(method.lower())).prepare()

From 73b297202938f6b2286535d557271f7b25d1d552 Mon Sep 17 00:00:00 2001
From: Amrita kumari mishra <amritamishraxa06@gmail.com>
Date: Wed, 10 Dec 2025 11:40:50 +0000
Subject: [PATCH 2/2] Add simplejson as an optional extra

---
 setup.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/setup.py b/setup.py
index ff65d39102..39ab804e3e 100755
--- a/setup.py
+++ b/setup.py
@@ -99,6 +99,7 @@
         "security": [],
         "socks": ["PySocks>=1.5.6, !=1.5.7"],
         "use_chardet_on_py3": ["chardet>=3.0.2,<6"],
+        "simplejson": ["simplejson"], 
     },
     project_urls={
         "Documentation": "https://requests.readthedocs.io",