From ed6701c90b105562f3672a89700691f0f11485c7 Mon Sep 17 00:00:00 2001
From: andrewwillowen <60939910+andrewwillowen@users.noreply.github.com>
Date: Sun, 21 Sep 2025 13:00:34 -0500
Subject: [PATCH 1/2] Update parametrize.rst

Add warning about using generators as the value argument
---
 doc/en/how-to/parametrize.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/doc/en/how-to/parametrize.rst b/doc/en/how-to/parametrize.rst
index fe186146434..b485377266b 100644
--- a/doc/en/how-to/parametrize.rst
+++ b/doc/en/how-to/parametrize.rst
@@ -194,6 +194,15 @@ To get all combinations of multiple parametrized arguments you can stack
 This will run the test with the arguments set to ``x=0/y=2``, ``x=1/y=2``,
 ``x=0/y=3``, and ``x=1/y=3`` exhausting parameters in the order of the decorators.
 
+.. warning::
+
+    Do not use a generator as the value argument for 
+    :ref:`pytest.mark.parametrize ref` when decorating a class or module:
+    the first test will consume the values of the generator and
+    subsequent tests will be skipped because the generator is empty.
+
+    Use a list or other iterable instead of a generator.
+
 .. _`pytest_generate_tests`:
 
 Basic ``pytest_generate_tests`` example

From a516aa6cf9709995dd05be40baf7869a9ddb25e7 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Sun, 21 Sep 2025 18:08:14 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 doc/en/how-to/parametrize.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/en/how-to/parametrize.rst b/doc/en/how-to/parametrize.rst
index b485377266b..6c51c4821b3 100644
--- a/doc/en/how-to/parametrize.rst
+++ b/doc/en/how-to/parametrize.rst
@@ -196,7 +196,7 @@ This will run the test with the arguments set to ``x=0/y=2``, ``x=1/y=2``,
 
 .. warning::
 
-    Do not use a generator as the value argument for 
+    Do not use a generator as the value argument for
     :ref:`pytest.mark.parametrize ref` when decorating a class or module:
     the first test will consume the values of the generator and
     subsequent tests will be skipped because the generator is empty.