From a2227556885c3b68a33285ae3ddb4a65d71b4497 Mon Sep 17 00:00:00 2001
From: mattip <matti.picus@gmail.com>
Date: Wed, 14 Nov 2018 10:42:01 -0800
Subject: MAINT: fix from review

---
 numpy/lib/format.py | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

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

diff --git a/numpy/lib/format.py b/numpy/lib/format.py
index e58ffa017..10945e5e8 100644
--- a/numpy/lib/format.py
+++ b/numpy/lib/format.py
@@ -291,12 +291,8 @@ def descr_to_dtype(descr):
 
     names, formats, offsets = zip(*fields)
     # names may be (title, names) tuples
-    names = list(names)
-    titles = [None] * len(names)
-    for i, n in enumerate(names):
-        if isinstance(n, tuple):
-            titles[i] = n[0]
-            names[i] = n[1]
+    nametups = (n  if isinstance(n, tuple) else (None, n) for n in names)
+    titles, names = zip(*nametups)
     return numpy.dtype({'names': names, 'formats': formats, 'titles': titles,
                         'offsets': offsets, 'itemsize': offset})
 
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