From cb0efc187bccec25417450f307b191e15ca49f08 Mon Sep 17 00:00:00 2001
From: khud <vitaly.khudobakhshov@gmail.com>
Date: Thu, 31 Dec 2020 15:41:58 +0300
Subject: [PATCH] Fix #1

---
 typedparse/spec.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/typedparse/spec.py b/typedparse/spec.py
index d9ccb1c..9493b94 100644
--- a/typedparse/spec.py
+++ b/typedparse/spec.py
@@ -162,6 +162,10 @@ def create(obj: ty.Any) -> ParserSpec:
 
 def _is_optional(tpe: str) -> (bool, ty.Optional[str]):
     result = re.search(r"typing.Union\[(.+), NoneType]", tpe)
+
+    if not result:
+        result = re.search(r"typing.Optional\[(.+)]", tpe)
+
     return (True, result.group(1)) if result else (False, None)