Remove six and py27 tox

Replace the following items with Python 3 style code.

- six.moves
- six.string_types

Change-Id: I77a0450e6e682f568de2ecde45765b0fd8762e20

bin/swift-bench

@@ -21,8 +21,6 @@ import signal
 import uuid
 from optparse import OptionParser
 
-from six.moves import range
-
 from swiftbench.bench import (BenchController, DistributedBenchController,
                               create_containers, delete_containers)
 from swiftbench.utils import readconf, config_true_value

requirements.txt

@@ -1,3 +1,2 @@
 python-swiftclient>=3.2.0
 eventlet>=0.17.4  # MIT
-six>=1.9.0

swiftbench/bench.py

@@ -31,8 +31,6 @@ import eventlet
 import eventlet.pools
 from eventlet.green.httplib import CannotSendRequest
 
-from six.moves import range
-
 import swiftclient as client
 
 from swiftbench.utils import config_true_value, using_http_proxy, \

swiftbench/utils.py

@@ -13,11 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import six
 import sys
-from six.moves.configparser import ConfigParser, RawConfigParser
-from six.moves.urllib.parse import urlparse
-from six.moves.urllib.request import getproxies, proxy_bypass
+from configparser import ConfigParser, RawConfigParser
+from urllib.parse import urlparse
+from urllib.request import getproxies, proxy_bypass
 
 # Used when reading config values
 TRUE_VALUES = set(('true', '1', 'yes', 'on', 't', 'y'))
@@ -79,7 +78,7 @@ def config_true_value(value):
     Returns False otherwise.
     """
     return value is True or \
-        (isinstance(value, six.string_types) and value.lower() in TRUE_VALUES)
+        (isinstance(value, str) and value.lower() in TRUE_VALUES)
 
 
 def using_http_proxy(url):
@@ -97,7 +96,7 @@ def get_size_bytes(value):
 
     For example, '10k' becomes 10240, and '2M' becomes 2097152.
     """
-    if not isinstance(value, six.string_types):
+    if not isinstance(value, str):
         raise TypeError
     value = value.strip()
     multiple = {

tests/test_utils.py

@@ -18,7 +18,7 @@ import os
 import tempfile
 import unittest
 
-from six.moves import cStringIO
+from io import StringIO
 
 from swiftbench import utils
 
@@ -46,7 +46,7 @@ log_name = yarr'''
             f.write(conf)
         make_filename = lambda: temppath
         # setup a file stream
-        make_fp = lambda: cStringIO(conf)
+        make_fp = lambda: StringIO(conf)
         for conf_object_maker in (make_filename, make_fp):
             conffile = conf_object_maker()
             result = utils.readconf(conffile)
@@ -92,7 +92,7 @@ log_name = %(yarr)s'''
             f.write(conf)
         make_filename = lambda: temppath
         # setup a file stream
-        make_fp = lambda: cStringIO(conf)
+        make_fp = lambda: StringIO(conf)
         for conf_object_maker in (make_filename, make_fp):
             conffile = conf_object_maker()
             result = utils.readconf(conffile, raw=True)

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py27,pypy,pep8
+envlist = py37,pypy,pep8
 minversion = 1.6
 
 [testenv]