From cd7ef5f5815908f985dfe04b7c1511b360199555 Mon Sep 17 00:00:00 2001
From: Ziirish <ziirish@ziirish.info>
Date: Wed, 13 Mar 2019 17:45:31 +0100
Subject: [PATCH 1/2] fix python 3 compatibility

---
 src/wtforms/fields/core.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/wtforms/fields/core.py b/src/wtforms/fields/core.py
index 08327979..42a61a1b 100644
--- a/src/wtforms/fields/core.py
+++ b/src/wtforms/fields/core.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-from copy import copy
 import datetime
 import decimal
 import itertools
@@ -513,7 +512,7 @@ def __init__(
     ):
         super(SelectField, self).__init__(label, validators, **kwargs)
         self.coerce = coerce
-        self.choices = copy(choices)
+        self.choices = list(choices) if choices is not None else None
 
     def iter_choices(self):
         for value, label in self.choices:

From 27947a2a7d800c25f2472ce494237be12868860d Mon Sep 17 00:00:00 2001
From: Fraser May <frasertmay@gmail.com>
Date: Mon, 17 Jun 2019 21:55:14 +0100
Subject: [PATCH 2/2] Added #475 to changelog

---
 CHANGES.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGES.rst b/CHANGES.rst
index e0b9e188..bd1effd2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -59,6 +59,9 @@ Unreleased
 -   Added a parameter to :class:`~fields.SelectField` to skip choice validation
     (`#434`_, `#493`_)
 -   Permitted underscores in ``HostnameValidation`` (`#463`_)
+-   Modified the changes made in `#286`_: instead of copying the list of
+    ``choices``, :class:`~fields.SelectField` now uses ``list()`` to construct
+    a new list of choices. (`#475`_)
 
 .. _#238: https://github.com/wtforms/wtforms/issues/238
 .. _#239: https://github.com/wtforms/wtforms/issues/239
@@ -96,6 +99,7 @@ Unreleased
 .. _#434: https://github.com/wtforms/wtforms/issues/434
 .. _#463: https://github.com/wtforms/wtforms/pull/463
 .. _#471: https://github.com/wtforms/wtforms/pull/471
+.. _#475: https://github.com/wtforms/wtforms/pull/475/
 .. _#482: https://github.com/wtforms/wtforms/issues/482
 .. _#483: https://github.com/wtforms/wtforms/issues/483
 .. _#484: https://github.com/wtforms/wtforms/pull/484