Drop support for Python 2.6.

.travis.yml

@@ -6,7 +6,6 @@ install:
   - pip install --upgrade tox
 
 script:
-  - tox -e py26
   - tox -e py27
   - tox -e py34
   - tox -e lint

CONTRIBUTING.rst

@@ -81,8 +81,8 @@ In order to add a feature to ``gcloud-python``:
 - The feature must be documented in both the API and narrative
   documentation (in ``docs/``).
 
-- The feature must work fully on the following CPython versions: 2.6,
-  and 2.7 on both UNIX and Windows.
+- The feature must work fully on the following CPython versions:  2.7,
+  3.4, and 3.5 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
   "unnecessary" is of course subjective, but new dependencies should
@@ -357,12 +357,10 @@ Supported Python Versions
 
 We support:
 
--  `Python 2.6`_
 -  `Python 2.7`_
 -  `Python 3.4`_
 -  `Python 3.5`_
 
-.. _Python 2.6: https://docs.python.org/2.6/
 .. _Python 2.7: https://docs.python.org/2.7/
 .. _Python 3.4: https://docs.python.org/3.4/
 .. _Python 3.5: https://docs.python.org/3.5/
@@ -378,7 +376,7 @@ and lack of continuous integration `support`_.
 .. _decreased usage: https://caremad.io/2013/10/a-look-at-pypi-downloads/
 .. _support: http://blog.travis-ci.com/2013-11-18-upcoming-build-environment-updates/
 
-We may `drop 2.6`_ as a supported version as well since Python 2.6 is no
+We have `dropped 2.6`_ as a supported version as well since Python 2.6 is no
 longer supported by the core development team.
 
 We also explicitly decided to support Python 3 beginning with version
@@ -392,7 +390,7 @@ We also explicitly decided to support Python 3 beginning with version
 .. _prominent: https://docs.djangoproject.com/en/1.9/faq/install/#what-python-version-can-i-use-with-django
 .. _projects: http://flask.pocoo.org/docs/0.10/python3/
 .. _Unicode literal support: https://www.python.org/dev/peps/pep-0414/
-.. _drop 2.6: https://github.com/GoogleCloudPlatform/gcloud-python/issues/995
+.. _dropped 2.6: https://github.com/GoogleCloudPlatform/gcloud-python/issues/995
 
 Versioning
 ----------

gcloud/_helpers.py

@@ -22,7 +22,6 @@
 import os
 import re
 import socket
-import sys
 from threading import local as Local
 
 from google.protobuf import timestamp_pb2
@@ -336,36 +335,6 @@ def _millis_from_datetime(value):
         return _millis(value)
 
 
-def _total_seconds_backport(offset):
-    """Backport of timedelta.total_seconds() from python 2.7+.
-
-    :type offset: :class:`datetime.timedelta`
-    :param offset: A timedelta object.
-
-    :rtype: int
-    :returns: The total seconds (including microseconds) in the
-              duration.
-    """
-    seconds = offset.days * 24 * 60 * 60 + offset.seconds
-    return seconds + offset.microseconds * 1e-6
-
-
-def _total_seconds(offset):
-    """Version independent total seconds for a time delta.
-
-    :type offset: :class:`datetime.timedelta`
-    :param offset: A timedelta object.
-
-    :rtype: int
-    :returns: The total seconds (including microseconds) in the
-              duration.
-    """
-    if sys.version_info[:2] < (2, 7):  # pragma: NO COVER Python 2.6
-        return _total_seconds_backport(offset)
-    else:
-        return offset.total_seconds()
-
-
 def _rfc3339_to_datetime(dt_str):
     """Convert a microsecond-precision timetamp to a native datetime.
 

gcloud/bigtable/column_family.py

@@ -19,7 +19,6 @@
 
 from google.protobuf import duration_pb2
 
-from gcloud._helpers import _total_seconds
 from gcloud.bigtable._generated import (
     table_pb2 as table_v2_pb2)
 from gcloud.bigtable._generated import (
@@ -40,7 +39,7 @@ def _timedelta_to_duration_pb(timedelta_val):
     :rtype: :class:`google.protobuf.duration_pb2.Duration`
     :returns: A duration object equivalent to the time delta.
     """
-    seconds_decimal = _total_seconds(timedelta_val)
+    seconds_decimal = timedelta_val.total_seconds()
     # Truncate the parts other than the integer.
     seconds = int(seconds_decimal)
     if seconds_decimal < 0:

gcloud/bigtable/happybase/table.py

@@ -23,7 +23,6 @@
 from gcloud._helpers import _datetime_from_microseconds
 from gcloud._helpers import _microseconds_from_datetime
 from gcloud._helpers import _to_bytes
-from gcloud._helpers import _total_seconds
 from gcloud.bigtable.column_family import GCRuleIntersection
 from gcloud.bigtable.column_family import MaxAgeGCRule
 from gcloud.bigtable.column_family import MaxVersionsGCRule
@@ -653,7 +652,7 @@ def _gc_rule_to_dict(gc_rule):
     if gc_rule is None:
         result = {}
     elif isinstance(gc_rule, MaxAgeGCRule):
-        result = {'time_to_live': _total_seconds(gc_rule.max_age)}
+        result = {'time_to_live': gc_rule.max_age.total_seconds()}
     elif isinstance(gc_rule, MaxVersionsGCRule):
         result = {'max_versions': gc_rule.max_num_versions}
     elif isinstance(gc_rule, GCRuleIntersection):

gcloud/error_reporting/client.py

@@ -171,11 +171,10 @@ def _send_error_report(self, message,
         if http_context:
             http_context_dict = http_context.__dict__
             # strip out None values
-            # once py26 support is dropped this can use dict comprehension
-            payload['context']['httpContext'] = dict(
-                (k, v) for (k, v) in six.iteritems(http_context_dict)
-                if v is not None
-            )
+            payload['context']['httpContext'] = {
+                key: value for key, value in six.iteritems(http_context_dict)
+                if value is not None
+            }
 
         if user:
             payload['context']['user'] = user

gcloud/exceptions.py

@@ -36,8 +36,7 @@ class GCloudError(Exception):
     """
 
     def __init__(self, message, errors=()):
-        super(GCloudError, self).__init__()
-        # suppress deprecation warning under 2.6.x
+        super(GCloudError, self).__init__(message)
         self.message = message
         self._errors = errors
 

gcloud/test__helpers.py

@@ -494,34 +494,6 @@ def test_it(self):
         self.assertEqual(self._callFUT(NOW_MICROS), NOW)
 
 
-class Test__total_seconds_backport(unittest2.TestCase):
-
-    def _callFUT(self, *args, **kwargs):
-        from gcloud._helpers import _total_seconds_backport
-        return _total_seconds_backport(*args, **kwargs)
-
-    def test_it(self):
-        import datetime
-        offset = datetime.timedelta(seconds=3,
-                                    microseconds=140000)
-        result = self._callFUT(offset)
-        self.assertEqual(result, 3.14)
-
-
-class Test__total_seconds(unittest2.TestCase):
-
-    def _callFUT(self, *args, **kwargs):
-        from gcloud._helpers import _total_seconds
-        return _total_seconds(*args, **kwargs)
-
-    def test_it(self):
-        import datetime
-        offset = datetime.timedelta(seconds=1,
-                                    microseconds=414000)
-        result = self._callFUT(offset)
-        self.assertEqual(result, 1.414)
-
-
 class Test__rfc3339_to_datetime(unittest2.TestCase):
 
     def _callFUT(self, dt_str):

setup.py

@@ -53,7 +53,6 @@
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.4',

tox.ini

@@ -39,16 +39,6 @@ deps =
     {[testing]deps}
     {[grpc]deps}
 
-[testenv:py26]
-basepython =
-    python2.6
-deps =
-    {[testing]deps}
-#   ordereddict needed for google.protobuf, which doesn't declare it.
-    ordereddict
-setenv =
-    PYTHONPATH = {toxinidir}/_testing
-
 [testenv:py27-pandas]
 basepython =
     python2.7