Merge pull request #2 from alstn2468/required-children-prop

Required children prop

Author: siner308

Diff for: dash/development/_py_components_generation.py

@@ -1,7 +1,7 @@
 from collections import OrderedDict
 import copy
 import os
-from textwrap import fill, dedent
+from textwrap import fill
 
 from dash.development.base_component import _explicitize_args
 from dash.exceptions import NonExistentEventException
@@ -86,7 +86,7 @@ def __init__(self, {default_argtext}):
     ).replace("\r\n", "\n")
     required_args = required_props(filtered_props)
     is_children_required = 'children' in required_args
-    required_args = list(filter(lambda arg: arg != 'children', required_args))
+    required_args = [arg for arg in required_args if arg != "children"]
 
     prohibit_events(props)