Fix dangerous default args. (#29839)

contrib/inventory/collins.py

@@ -169,8 +169,9 @@ class CollinsInventory(object):
         print(data_to_print)
         return successful
 
-    def find_assets(self, attributes={}, operation='AND'):
+    def find_assets(self, attributes=None, operation='AND'):
         """ Obtains Collins assets matching the provided attributes. """
+        attributes = {} if attributes is None else attributes
 
         # Formats asset search query to locate assets matching attributes, using
         # the CQL search feature as described here:

contrib/inventory/proxmox.py

@@ -53,7 +53,9 @@ class ProxmoxVM(dict):
 
 
 class ProxmoxVMList(list):
-    def __init__(self, data=[]):
+    def __init__(self, data=None):
+        data = [] if data is None else data
+
         for item in data:
             self.append(ProxmoxVM(item))