From 1dbe776e6adf5045943e409791a7d146b9a887a3 Mon Sep 17 00:00:00 2001
From: Gabriel Luiz Freitas Almeida <gabriel@logspace.ai>
Date: Tue, 22 Aug 2023 16:11:47 -0300
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20feat(utils.py):=20add=20function=20?=
 =?UTF-8?q?extract=5Finner=5Ftype=20to=20extract=20the=20inner=20type=20fr?=
 =?UTF-8?q?om=20a=20type=20hint=20that=20is=20a=20list?=
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---
 src/backend/langflow/interface/custom/utils.py | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/backend/langflow/interface/custom/utils.py

diff --git a/src/backend/langflow/interface/custom/utils.py b/src/backend/langflow/interface/custom/utils.py
new file mode 100644
index 000000000..99b0d4bc6
--- /dev/null
+++ b/src/backend/langflow/interface/custom/utils.py
@@ -0,0 +1,10 @@
+import re
+
+
+def extract_inner_type(return_type: str) -> str:
+    """
+    Extracts the inner type from a type hint that is a list.
+    """
+    if match := re.match(r"list\[(.*)\]", return_type, re.IGNORECASE):
+        return match[1]
+    return return_type