From 71ee32b90d13dac5d4f53eb71d1a1113fdf184e6 Mon Sep 17 00:00:00 2001
From: Luffbee <luffbee@outlook.com>
Date: Thu, 2 Dec 2021 10:56:42 +0800
Subject: [PATCH] optimize _expand_named_fields

---
 parse.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/parse.py b/parse.py
index e5db401..cef2400 100644
--- a/parse.py
+++ b/parse.py
@@ -945,7 +945,11 @@ def _expand_named_fields(self, named_fields):
         result = {}
         for field, value in named_fields.items():
             # split 'aaa[bbb][ccc]...' into 'aaa' and '[bbb][ccc]...'
-            basename, subkeys = re.match(r'([^\[]+)(.*)', field).groups()
+            n = field.find('[')
+            if n == -1:
+                basename, subkeys = field, ''
+            else:
+                basename, subkeys = field[:n], field[n:]
 
             # create nested dictionaries {'aaa': {'bbb': {'ccc': ...}}}
             d = result