From 606c0c07393d564d3c9a5795f3597e8bbc884d47 Mon Sep 17 00:00:00 2001
From: systemshift <42102034+systemshift@users.noreply.github.com>
Date: Thu, 14 Nov 2019 08:35:04 -0800
Subject: [PATCH] drop python 2.7 from serialize.py (#812)

* drop python 2.7 from serialize.py

* update changelog
---
 docs/source/changelog.rst           | 1 +
 featuretools/entityset/serialize.py | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
index 8ec64c15b3..d8a9a873b1 100644
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@@ -6,6 +6,7 @@ Changelog
     * Enhancements
     * Fixes
     * Changes
+        * Remove python 2.7 support from serialize.py (:pr:`812`)
     * Documentation Changes
         * remove python 2.7 support and add 3.7 in install.rst (:pr:`805`)
         * Fix import error in docs (:pr:`803`)
diff --git a/featuretools/entityset/serialize.py b/featuretools/entityset/serialize.py
index 92b6514008..406eead10a 100644
--- a/featuretools/entityset/serialize.py
+++ b/featuretools/entityset/serialize.py
@@ -95,7 +95,6 @@ def write_entity_data(entity, path, format='csv', **kwargs):
         df = entity.df.copy()
         columns = df.select_dtypes('object').columns
         df[columns] = df[columns].astype('unicode')
-        df.columns = df.columns.astype('unicode')  # ensures string column names for python 2.7
         df.to_parquet(file, **kwargs)
     elif format == 'pickle':
         entity.df.to_pickle(file, **kwargs)