Improved Command class management.

src/myfasthtml/core/utils.py

@@ -262,6 +262,28 @@ def snake_to_pascal(name: str) -> str:
   return ''.join(word.capitalize() for word in parts if word)
 
 
+def flatten(*args):
+  """
+  Flattens nested lists or tuples into a single list. This utility function takes
+  any number of arguments, iterating recursively through any nested lists or
+  tuples, and returns a flat list containing all the elements.
+
+  :param args: Arbitrary number of arguments, which can include nested lists or
+               tuples to be flattened.
+  :type args: Any
+  :return: A flat list containing all the elements from the input, preserving the
+           order of elements as they are recursively extracted from nested
+           structures.
+  :rtype: list
+  """
+  res = []
+  for arg in args:
+    if isinstance(arg, (list, tuple)):
+      res.extend(flatten(*arg))
+    else:
+      res.append(arg)
+  return res
+
 @utils_rt(Routes.Commands)
 def post(session, c_id: str, client_response: dict = None):
   """