From 70922d0f7fc48bbfeec6c48534642d2ff0d11782 Mon Sep 17 00:00:00 2001
From: er-eis <eeisenberg0@gmail.com>
Date: Mon, 20 May 2024 21:41:52 -0400
Subject: [PATCH] Add contributing warning about circular imports (#15691)

Closes #15689

Adds warning to contributing doc regarding the necessity to rebuild and the type of error a developer may see

Authors:
  - https://github.com/er-eis

Approvers:
  - Vyas Ramasubramani (https://github.com/vyasr)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

URL: https://github.com/rapidsai/cudf/pull/15691
---
 CONTRIBUTING.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 757eaa44510..98c2ec0a22e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -161,6 +161,8 @@ To build all libraries and tests, with Python packages in development mode, simp
 ./build.sh --pydevelop libcudf libcudf_kafka cudf dask_cudf cudf_kafka custreamz
 ```
 
+- **Note**: if Cython files (`*.pyx` or `*.pxd`) have changed, the Python build must be rerun.
+
 To run the C++ tests, run
 
 ```bash