Don't add log handlers if they already exist

.python-version

@@ -1 +1 @@
-3.13.1
+3.13

CHANGELOG.md

@@ -1,4 +1,7 @@
 # Changelog
+## v1.10.2 4/27/26
+- Prevent double logging in pytest using structlog
+
 ## v1.10.1 4/14/26
 - Add optional timeout param for OAuth2Client
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "nypl_py_utils"
-version = "1.10.1"
+version = "1.10.2"
 authors = [
   { name="Aaron Friedman", email="aaronfriedman@nypl.org" },
 ]

src/nypl_py_utils/functions/log_helper.py

@@ -28,10 +28,13 @@ def get_structlog(module):
     without binding it to others, use `logger = logger.bind(contextvar=0)`.
     """
     logger = logging.getLogger(module)
-    logger.addHandler(logging.StreamHandler(sys.stdout))
     logger.setLevel(os.environ.get('LOG_LEVEL', 'INFO').upper())
     logger.propagate = False  # Prevents double logging
 
+    # No need to add handlers if there already are some (e.g. pytest)
+    if not logger.handlers:
+        logger.addHandler(logging.StreamHandler(sys.stdout))
+
     return structlog.wrap_logger(
         logger,
         processors=[