From ba5fbcd432f417ed49b0055ea5f29ac3c1591f4f Mon Sep 17 00:00:00 2001
From: Phil Elson <pelson.pub@gmail.com>
Date: Tue, 22 Jan 2019 11:46:24 +0000
Subject: [PATCH] Tidy up the Unit constructor for the py2 case, so that it is
 easier to see that the code can be deleted when the codebase becomes py3
 only.

---
 cf_units/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cf_units/__init__.py b/cf_units/__init__.py
index 5aae07f9..e2197366 100644
--- a/cf_units/__init__.py
+++ b/cf_units/__init__.py
@@ -809,8 +809,8 @@ def __init__(self, unit, calendar=None):
         else:
             unit = str(unit).strip()
 
-        # For the sake of python 2, ensure that the string is a unicode.
-        if not isinstance(unit, six.text_type):
+        if six.PY2:
+            # Ensure that the string is a unicode object.
             unit = six.text_type(unit.decode('utf8'))
 
         if unit.lower().endswith(' utc'):