From 6bffc7d86287fb0cd7b8495b9dcf40b243a484de Mon Sep 17 00:00:00 2001
From: Matthew Painter <mjgp2@users.noreply.github.com>
Date: Fri, 20 Oct 2023 01:32:33 +0100
Subject: [PATCH] Avoid throwing exception on Union types (#1378)

Signed-off-by: Matthew Painter <mjgp2@matthewpainter.com>
Signed-off-by: Nok <nok.lam.chan@quantumblack.com>
---
 pandera/mypy.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/pandera/mypy.py b/pandera/mypy.py
index 99c2c38c6..fc044edc0 100644
--- a/pandera/mypy.py
+++ b/pandera/mypy.py
@@ -136,7 +136,7 @@ class Schema(BaseSchema):
             if not hasattr(def_, "type") or def_.type is None:
                 continue
             type_ = def_.type
-            if get_typename(def_.type) in FIELD_GENERICS_FULLNAMES:
+            if str(def_.type) in FIELD_GENERICS_FULLNAMES:
                 type_.args = ()  # erase generic type arg
 
 
@@ -154,7 +154,3 @@ def get_fullname(x: Union[FuncBase, SymbolNode]) -> str:
     if callable(fn):  # pragma: no cover
         return fn()
     return fn
-
-
-def get_typename(x) -> str:
-    return f"{x.type.module_name}.{x.type.name}"