From a05aac7007dd802401d59b6380ef95095836ed9b Mon Sep 17 00:00:00 2001
From: INADA Naoki <songofacandy@gmail.com>
Date: Sun, 1 Oct 2017 01:08:14 +0900
Subject: [PATCH] avoid import platform

platform module is relatively large: it takes about 5ms to import
---
 requests/sessions.py | 4 ++--
 requests/utils.py    | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/requests/sessions.py b/requests/sessions.py
index 391f857d..631fadb9 100644
--- a/requests/sessions.py
+++ b/requests/sessions.py
@@ -8,7 +8,7 @@ This module provides a Session object to manage and persist settings across
 requests (cookies, auth, proxies).
 """
 import os
-import platform
+import sys
 import time
 from collections import Mapping
 from datetime import timedelta
@@ -38,7 +38,7 @@ from .status_codes import codes
 from .models import REDIRECT_STATI
 
 # Preferred clock, based on which one is more accurate on a given system.
-if platform.system() == 'Windows':
+if sys.platform == 'win32':
     try:  # Python 3.4+
         preferred_clock = time.perf_counter
     except AttributeError:  # Earlier than Python 3.
diff --git a/requests/utils.py b/requests/utils.py
index c52ce2d0..35fff043 100644
--- a/requests/utils.py
+++ b/requests/utils.py
@@ -14,10 +14,10 @@ import collections
 import contextlib
 import io
 import os
-import platform
 import re
 import socket
 import struct
+import sys
 import warnings
 
 from .__version__ import __version__
@@ -39,7 +39,7 @@ NETRC_FILES = ('.netrc', '_netrc')
 DEFAULT_CA_BUNDLE_PATH = certs.where()
 
 
-if platform.system() == 'Windows':
+if sys.platform == 'win32':
     # provide a proxy_bypass version on Windows without DNS lookups
 
     def proxy_bypass_registry(host):