Del frame after stack level is found

holoviews/util/warnings.py

@@ -34,14 +34,18 @@ def find_stack_level():
     param_dir = os.path.dirname(param.__file__)
 
     frame = inspect.currentframe()
-    stacklevel = 0
-    while frame:
-        fname = inspect.getfile(frame)
-        if fname.startswith((pkg_dir, param_dir)) and not fname.startswith(test_dir):
-            frame = frame.f_back
-            stacklevel += 1
-        else:
-            break
+    try:
+        stacklevel = 0
+        while frame:
+            fname = inspect.getfile(frame)
+            if fname.startswith((pkg_dir, param_dir)) and not fname.startswith(test_dir):
+                frame = frame.f_back
+                stacklevel += 1
+            else:
+                break
+    finally:
+        # See: https://docs.python.org/3/library/inspect.html#inspect.Traceback
+        del frame
 
     return stacklevel
 

scripts/check_latest_packages.py

@@ -1,5 +1,6 @@
 import sys
 from datetime import date, datetime, timedelta
+from importlib.metadata import version
 
 import requests
 from packaging.version import Version
@@ -13,7 +14,7 @@ def main(*packages):
         url = f"https://pypi.org/pypi/{package}/json"
         resp = requests.get(url, timeout=20).json()
         latest = resp["info"]["version"]
-        current = __import__(package).__version__
+        current = version(package)
 
         latest_release_date = datetime.fromisoformat(
             resp["releases"][latest][0]["upload_time_iso_8601"]