Fix deprecation warnings

Author: JonnyWong16

plexapi/library.py

@@ -838,7 +838,7 @@ def history(self, maxresults=9999999, mindate=None):
         """
         return self._server.history(maxresults=maxresults, mindate=mindate, librarySectionID=self.key, accountID=1)
 
-    @deprecated('use "collections" (plural) instead')
+    @deprecated('use "collections" (plural) instead', stacklevel=2)
     def collection(self, **kwargs):
         return self.collections()
 
@@ -1596,7 +1596,7 @@ def _loadData(self, data):
     @property
     @deprecated('use "items" instead')
     def children(self):
-        return self.fetchItems(self.key)
+        return self.items()
 
     @property
     def thumbUrl(self):

plexapi/utils.py

@@ -21,7 +21,6 @@
     tqdm = None
 
 log = logging.getLogger('plexapi')
-warnings.simplefilter('default', category=DeprecationWarning)
 
 # Search Types - Plex uses these to filter specific media types when searching.
 # Library Types - Populated at runtime
@@ -467,15 +466,15 @@ def base64str(text):
     return base64.b64encode(text.encode('utf-8')).decode('utf-8')
 
 
-def deprecated(message):
+def deprecated(message, stacklevel=3):
     def decorator(func):
         """This is a decorator which can be used to mark functions
         as deprecated. It will result in a warning being emitted
         when the function is used."""
         @functools.wraps(func)
         def wrapper(*args, **kwargs):
             msg = 'Call to deprecated function or method "%s", %s.' % (func.__name__, message)
-            warnings.warn(msg, category=DeprecationWarning, stacklevel=3)
+            warnings.warn(msg, category=DeprecationWarning, stacklevel=stacklevel)
             log.warning(msg)
             return func(*args, **kwargs)
         return wrapper