From 0dc55882a976630d832ebebdb58350d9c26205fe Mon Sep 17 00:00:00 2001
From: jakobjakobson13 <43045863+jakobjakobson13@users.noreply.github.com>
Date: Tue, 18 Aug 2020 06:29:02 +0200
Subject: BUG: fix typo in polydiv that prevented promotion to poly1d (#17053)

Fix bug caused by typo and added tests
---
 numpy/lib/polynomial.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'numpy/lib/polynomial.py')

diff --git a/numpy/lib/polynomial.py b/numpy/lib/polynomial.py
index 1c124cc0e..7b89eeb70 100644
--- a/numpy/lib/polynomial.py
+++ b/numpy/lib/polynomial.py
@@ -1017,7 +1017,7 @@ def polydiv(u, v):
     (array([1.5 , 1.75]), array([0.25]))
 
     """
-    truepoly = (isinstance(u, poly1d) or isinstance(u, poly1d))
+    truepoly = (isinstance(u, poly1d) or isinstance(v, poly1d))
     u = atleast_1d(u) + 0.0
     v = atleast_1d(v) + 0.0
     # w has the common type
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