From e34f786c6f6c5cf3c236aa9d8cb15cf39876aaa8 Mon Sep 17 00:00:00 2001
From: Olek <45364492+yardasol@users.noreply.github.com>
Date: Wed, 7 Sep 2022 11:52:06 -0500
Subject: [PATCH] str->component in flow control

Co-authored-by: Paul Romano <paul.k.romano@gmail.com>
---
 openmc/material.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openmc/material.py b/openmc/material.py
index de4940a47..67615d74c 100644
--- a/openmc/material.py
+++ b/openmc/material.py
@@ -438,7 +438,7 @@ class Material(IDManagerMixin):
             params['percent_type'] = percent_type
 
             ## check if nuclide
-            if not str.isalpha():
+            if not component.isalpha():
                 self.add_nuclide(component, **params)
             else: # is element
                 kwargs = params