From dde76eddb11b20405a27ebe24a5a0ad1c83b90c8 Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Thu, 29 Nov 2018 17:30:19 -0800
Subject: [PATCH] Added description of merge_config

---
 utils/config_ops.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/utils/config_ops.py b/utils/config_ops.py
index 0648fe7c..dfdd5558 100644
--- a/utils/config_ops.py
+++ b/utils/config_ops.py
@@ -57,6 +57,13 @@ def digest_config(obj, kwargs, caller_locals={}):
 
 
 def merge_config(all_dicts):
+    """
+    Creates a dict whose keyset is the union of all the
+    input dictionaries.  The value for each key is based
+    on the first dict in the list with that key.
+
+    When values are dictionaries, it is applied recursively
+    """
     all_config = reduce(op.add, [list(d.items()) for d in all_dicts])
     config = dict()
     for c in all_config: