Drop support for EOL Python 2.6 and 3.3

* Drop support for EOL Python 2.6

* Use more helpful assertIn/NotIn instead of assertTrue/False

* Drop support for EOL Python 3.3

* Remove redundant Python 3.3 code

* Restore code for RHEL 6 and virtualenv for Py2.7

* Revert pipstrap.py to upstream

* Merge py26_packages and non_py26_packages into all_packages

* Revert changes to *-auto in root

* Update by calling letsencrypt-auto-source/build.py

* Revert permissions for pipstrap.py

.travis.yml

@@ -25,18 +25,10 @@ matrix:
       addons:
     - python: "2.7"
       env: TOXENV=lint
-    - python: "2.6"
-      env: TOXENV=py26
-      sudo: required
-      services: docker
     - python: "2.7"
       env: TOXENV=py27-oldest
       sudo: required
       services: docker
-    - python: "3.3"
-      env: TOXENV=py33
-      sudo: required
-      services: docker
     - python: "3.6"
       env: TOXENV=py36
       sudo: required

acme/acme/__init__.py

@@ -10,13 +10,3 @@ supported version: `draft-ietf-acme-01`_.
   https://github.com/ietf-wg-acme/acme/tree/draft-ietf-acme-acme-01
 
 """
-import sys
-import warnings
-
-for (major, minor) in [(2, 6), (3, 3)]:
-    if sys.version_info[:2] == (major, minor):
-        warnings.warn(
-                "Python {0}.{1} support will be dropped in the next release of "
-                "acme. Please upgrade your Python version.".format(major, minor),
-                DeprecationWarning,
-        ) #pragma: no cover

acme/acme/crypto_util.py

@@ -5,7 +5,6 @@ import logging
 import os
 import re
 import socket
-import sys
 
 import OpenSSL
 
@@ -130,8 +129,7 @@ def probe_sni(name, host, port=443, timeout=300,
     context = OpenSSL.SSL.Context(method)
     context.set_timeout(timeout)
 
-    socket_kwargs = {} if sys.version_info < (2, 7) else {
+    socket_kwargs = {'source_address': source_address}
-        'source_address': source_address}
 
     host_protocol_agnostic = None if host == '::' or host == '0' else host
 

acme/acme/crypto_util_test.py

@@ -170,9 +170,9 @@ class MakeCSRTest(unittest.TestCase):
         self.assertTrue(b'--END CERTIFICATE REQUEST--' in csr_pem)
         csr = OpenSSL.crypto.load_certificate_request(
             OpenSSL.crypto.FILETYPE_PEM, csr_pem)
-        # In pyopenssl 0.13 (used with TOXENV=py26-oldest and py27-oldest), csr
+        # In pyopenssl 0.13 (used with TOXENV=py27-oldest), csr objects don't
-        # objects don't have a get_extensions() method, so we skip this test if
+        # have a get_extensions() method, so we skip this test if the method
-        # the method isn't available.
+        # isn't available.
         if hasattr(csr, 'get_extensions'):
             self.assertEquals(len(csr.get_extensions()), 1)
             self.assertEquals(csr.get_extensions()[0].get_data(),
@@ -188,9 +188,9 @@ class MakeCSRTest(unittest.TestCase):
         csr = OpenSSL.crypto.load_certificate_request(
             OpenSSL.crypto.FILETYPE_PEM, csr_pem)
 
-        # In pyopenssl 0.13 (used with TOXENV=py26-oldest and py27-oldest), csr
+        # In pyopenssl 0.13 (used with TOXENV=py27-oldest), csr objects don't
-        # objects don't have a get_extensions() method, so we skip this test if
+        # have a get_extensions() method, so we skip this test if the method
-        # the method isn't available.
+        # isn't available.
         if hasattr(csr, 'get_extensions'):
             self.assertEquals(len(csr.get_extensions()), 2)
             # NOTE: Ideally we would filter by the TLS Feature OID, but

acme/setup.py

@@ -25,13 +25,6 @@ install_requires = [
     'six>=1.9.0',  # needed for python_2_unicode_compatible
 ]
 
-# env markers cause problems with older pip and setuptools
-if sys.version_info < (2, 7):
-    install_requires.extend([
-        'argparse',
-        'ordereddict',
-    ])
-
 dev_extras = [
     'pytest',
     'pytest-xdist',
@@ -58,10 +51,8 @@ setup(
         'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-apache/setup.py

@@ -40,10 +40,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-compatibility-test/setup.py

@@ -40,10 +40,8 @@ setup(
         'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-cloudflare/setup.py

@@ -39,10 +39,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-cloudxns/setup.py

@@ -41,7 +41,6 @@ setup(
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-digitalocean/setup.py

@@ -40,10 +40,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-dnsimple/setup.py

@@ -41,7 +41,6 @@ setup(
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-dnsmadeeasy/setup.py

@@ -41,7 +41,6 @@ setup(
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-google/setup.py

@@ -44,10 +44,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-luadns/setup.py

@@ -41,7 +41,6 @@ setup(
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-nsone/setup.py

@@ -41,7 +41,6 @@ setup(
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-rfc2136/setup.py

@@ -39,10 +39,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-dns-route53/setup.py

@@ -32,10 +32,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot-nginx/setup.py

@@ -40,10 +40,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

certbot/log.py

@@ -165,11 +165,6 @@ class ColoredStreamHandler(logging.StreamHandler):
 
     """
     def __init__(self, stream=None):
-        # logging handlers use old style classes in Python 2.6 so
-        # super() cannot be used
-        if sys.version_info < (2, 7):  # pragma: no cover
-            logging.StreamHandler.__init__(self, stream)
-        else:
         super(ColoredStreamHandler, self).__init__(stream)
         self.colored = (sys.stderr.isatty() if stream is None else
                         stream.isatty())
@@ -184,9 +179,7 @@ class ColoredStreamHandler(logging.StreamHandler):
         :rtype: str
 
         """
-        out = (logging.StreamHandler.format(self, record)
+        out = super(ColoredStreamHandler, self).format(record)
-               if sys.version_info < (2, 7)
-               else super(ColoredStreamHandler, self).format(record))
         if self.colored and record.levelno >= self.red_level:
             return ''.join((util.ANSI_SGR_RED, out, util.ANSI_SGR_RESET))
         else:
@@ -203,12 +196,6 @@ class MemoryHandler(logging.handlers.MemoryHandler):
     def __init__(self, target=None):
         # capacity doesn't matter because should_flush() is overridden
         capacity = float('inf')
-        # logging handlers use old style classes in Python 2.6 so
-        # super() cannot be used
-        if sys.version_info < (2, 7):  # pragma: no cover
-            logging.handlers.MemoryHandler.__init__(
-                self, capacity, target=target)
-        else:
         super(MemoryHandler, self).__init__(capacity, target=target)
 
     def close(self):
@@ -216,9 +203,6 @@ class MemoryHandler(logging.handlers.MemoryHandler):
         # This allows the logging module which may only have a weak
         # reference to the target handler to properly flush and close it.
         target = self.target
-        if sys.version_info < (2, 7):  # pragma: no cover
-            logging.handlers.MemoryHandler.close(self)
-        else:
         super(MemoryHandler, self).close()
         self.target = target
 
@@ -233,9 +217,6 @@ class MemoryHandler(logging.handlers.MemoryHandler):
         # This method allows flush() calls in logging.shutdown to be a
         # noop so we can control when this handler is flushed.
         if force:
-            if sys.version_info < (2, 7):  # pragma: no cover
-                logging.handlers.MemoryHandler.flush(self)
-            else:
             super(MemoryHandler, self).flush()
 
     def shouldFlush(self, record):
@@ -262,11 +243,6 @@ class TempHandler(logging.StreamHandler):
     """
     def __init__(self):
         stream = tempfile.NamedTemporaryFile('w', delete=False)
-        # logging handlers use old style classes in Python 2.6 so
-        # super() cannot be used
-        if sys.version_info < (2, 7):  # pragma: no cover
-            logging.StreamHandler.__init__(self, stream)
-        else:
         super(TempHandler, self).__init__(stream)
         self.path = stream.name
         self._delete = True
@@ -278,11 +254,6 @@ class TempHandler(logging.StreamHandler):
 
         """
         self._delete = False
-        # logging handlers use old style classes in Python 2.6 so
-        # super() cannot be used
-        if sys.version_info < (2, 7):  # pragma: no cover
-            logging.StreamHandler.emit(self, record)
-        else:
         super(TempHandler, self).emit(record)
 
     def close(self):
@@ -299,9 +270,6 @@ class TempHandler(logging.StreamHandler):
             if self._delete:
                 os.remove(self.path)
             self._delete = False
-            if sys.version_info < (2, 7):  # pragma: no cover
-                logging.StreamHandler.close(self)
-            else:
             super(TempHandler, self).close()
         finally:
             self.release()

certbot/main.py

@@ -4,7 +4,6 @@ import functools
 import logging.handlers
 import os
 import sys
-import warnings
 
 import configobj
 import josepy as jose
@@ -1218,17 +1217,6 @@ def main(cli_args=sys.argv[1:]):
         # Let plugins_cmd be run as un-privileged user.
         if config.func != plugins_cmd:
             raise
-    deprecation_fmt = (
-        "Python %s.%s support will be dropped in the next "
-        "release of Certbot - please upgrade your Python version.")
-    # We use the warnings system for Python 2.6 and logging for Python 3
-    # because DeprecationWarnings are only reported by default in Python <= 2.6
-    # and warnings can be disabled by the user.
-    if sys.version_info[:2] == (2, 6):
-        warning = deprecation_fmt % sys.version_info[:2]
-        warnings.warn(warning, DeprecationWarning)
-    elif sys.version_info[:2] == (3, 3):
-        logger.warning(deprecation_fmt, *sys.version_info[:2])
 
     set_displayer(config)
 

docs/contributing.rst

@@ -422,7 +422,7 @@ OS-level dependencies can be installed like so:
 In general...
 
 * ``sudo`` is required as a suggested way of running privileged process
-* `Python`_ 2.6/2.7 is required
+* `Python`_ 2.7 is required
 * `Augeas`_ is required for the Python bindings
 * ``virtualenv`` and ``pip`` are used for managing other python library
   dependencies

docs/install.rst

@@ -22,7 +22,7 @@ your system.
 System Requirements
 ===================
 
-Certbot currently requires Python 2.6, 2.7, or 3.3+. By default, it requires
+Certbot currently requires Python 2.7, or 3.4+. By default, it requires
 root access in order to write to ``/etc/letsencrypt``,
 ``/var/log/letsencrypt``, ``/var/lib/letsencrypt``; to bind to ports 80 and 443
 (if you use the ``standalone`` plugin) and to read and modify webserver

letsencrypt-auto-source/letsencrypt-auto

@@ -246,7 +246,7 @@ DeprecationBootstrap() {
   fi
 }
 
-MIN_PYTHON_VERSION="2.6"
+MIN_PYTHON_VERSION="2.7"
 MIN_PYVER=$(echo "$MIN_PYTHON_VERSION" | sed 's/\.//')
 # Sets LE_PYTHON to Python version string and PYVER to the first two
 # digits of the python version
@@ -781,20 +781,11 @@ elif [ -f /etc/redhat-release ]; then
   prev_le_python="$LE_PYTHON"
   unset LE_PYTHON
   DeterminePythonVersion "NOCRASH"
-  if [ "$PYVER" -eq 26 ]; then
-    Bootstrap() {
-      BootstrapMessage "RedHat-based OSes that will use Python3"
-      BootstrapRpmPython3
-    }
-    USE_PYTHON_3=1
-    BOOTSTRAP_VERSION="BootstrapRpmPython3 $BOOTSTRAP_RPM_PYTHON3_VERSION"
-  else
   Bootstrap() {
     BootstrapMessage "RedHat-based OSes"
     BootstrapRpmCommon
   }
   BOOTSTRAP_VERSION="BootstrapRpmCommon $BOOTSTRAP_RPM_COMMON_VERSION"
-  fi
   LE_PYTHON="$prev_le_python"
 elif [ -f /etc/os-release ] && `grep -q openSUSE /etc/os-release` ; then
   Bootstrap() {
@@ -965,19 +956,11 @@ if [ "$1" = "--le-auto-phase2" ]; then
     say "Creating virtual environment..."
     DeterminePythonVersion
     rm -rf "$VENV_PATH"
-    if [ "$PYVER" -le 27 ]; then
-      if [ "$VERBOSE" = 1 ]; then
-        virtualenv --no-site-packages --python "$LE_PYTHON" "$VENV_PATH"
-      else
-        virtualenv --no-site-packages --python "$LE_PYTHON" "$VENV_PATH" > /dev/null
-      fi
-    else
     if [ "$VERBOSE" = 1 ]; then
       "$LE_PYTHON" -m venv "$VENV_PATH"
     else
       "$LE_PYTHON" -m venv "$VENV_PATH" > /dev/null
     fi
-    fi
 
     if [ -n "$BOOTSTRAP_VERSION" ]; then
       echo "$BOOTSTRAP_VERSION" > "$BOOTSTRAP_VERSION_PATH"

letsencrypt-auto-source/letsencrypt-auto.template

@@ -246,7 +246,7 @@ DeprecationBootstrap() {
   fi
 }
 
-MIN_PYTHON_VERSION="2.6"
+MIN_PYTHON_VERSION="2.7"
 MIN_PYVER=$(echo "$MIN_PYTHON_VERSION" | sed 's/\.//')
 # Sets LE_PYTHON to Python version string and PYVER to the first two
 # digits of the python version
@@ -320,20 +320,11 @@ elif [ -f /etc/redhat-release ]; then
   prev_le_python="$LE_PYTHON"
   unset LE_PYTHON
   DeterminePythonVersion "NOCRASH"
-  if [ "$PYVER" -eq 26 ]; then
-    Bootstrap() {
-      BootstrapMessage "RedHat-based OSes that will use Python3"
-      BootstrapRpmPython3
-    }
-    USE_PYTHON_3=1
-    BOOTSTRAP_VERSION="BootstrapRpmPython3 $BOOTSTRAP_RPM_PYTHON3_VERSION"
-  else
   Bootstrap() {
     BootstrapMessage "RedHat-based OSes"
     BootstrapRpmCommon
   }
   BOOTSTRAP_VERSION="BootstrapRpmCommon $BOOTSTRAP_RPM_COMMON_VERSION"
-  fi
   LE_PYTHON="$prev_le_python"
 elif [ -f /etc/os-release ] && `grep -q openSUSE /etc/os-release` ; then
   Bootstrap() {
@@ -504,19 +495,11 @@ if [ "$1" = "--le-auto-phase2" ]; then
     say "Creating virtual environment..."
     DeterminePythonVersion
     rm -rf "$VENV_PATH"
-    if [ "$PYVER" -le 27 ]; then
-      if [ "$VERBOSE" = 1 ]; then
-        virtualenv --no-site-packages --python "$LE_PYTHON" "$VENV_PATH"
-      else
-        virtualenv --no-site-packages --python "$LE_PYTHON" "$VENV_PATH" > /dev/null
-      fi
-    else
     if [ "$VERBOSE" = 1 ]; then
       "$LE_PYTHON" -m venv "$VENV_PATH"
     else
       "$LE_PYTHON" -m venv "$VENV_PATH" > /dev/null
     fi
-    fi
 
     if [ -n "$BOOTSTRAP_VERSION" ]; then
       echo "$BOOTSTRAP_VERSION" > "$BOOTSTRAP_VERSION_PATH"

letsencrypt-auto-source/tests/auto_test.py

@@ -287,8 +287,8 @@ class AutoTests(TestCase):
                 self.assertTrue(re.match(r'letsencrypt \d+\.\d+\.\d+',
                                 err.strip().splitlines()[-1]))
                 # Make a few assertions to test the validity of the next tests:
-                self.assertTrue('Upgrading certbot-auto ' in out)
+                self.assertIn('Upgrading certbot-auto ', out)
-                self.assertTrue('Creating virtual environment...' in out)
+                self.assertIn('Creating virtual environment...', out)
 
                 # Now we have le-auto 99.9.9  and LE 99.9.9 installed. This
                 # conveniently sets us up to test the next 2 cases.
@@ -296,8 +296,8 @@ class AutoTests(TestCase):
                 # Test when neither phase-1 upgrade nor phase-2 upgrade is
                 # needed (probably a common case):
                 out, err = run_letsencrypt_auto()
-                self.assertFalse('Upgrading certbot-auto ' in out)
+                self.assertNotIn('Upgrading certbot-auto ', out)
-                self.assertFalse('Creating virtual environment...' in out)
+                self.assertNotIn('Creating virtual environment...', out)
 
     def test_phase2_upgrade(self):
         """Test a phase-2 upgrade without a phase-1 upgrade."""
@@ -312,8 +312,8 @@ class AutoTests(TestCase):
                 # Create venv saving the correct bootstrap script version
                 out, err = run_le_auto(le_auto_path, venv_dir, base_url,
                                        PIP_FIND_LINKS=pip_find_links)
-                self.assertFalse('Upgrading certbot-auto ' in out)
+                self.assertNotIn('Upgrading certbot-auto ', out)
-                self.assertTrue('Creating virtual environment...' in out)
+                self.assertIn('Creating virtual environment...', out)
                 with open(join(venv_dir, BOOTSTRAP_FILENAME)) as f:
                     bootstrap_version = f.read()
 
@@ -329,8 +329,8 @@ class AutoTests(TestCase):
                 out, err = run_le_auto(le_auto_path, venv_dir, base_url,
                                        PIP_FIND_LINKS=pip_find_links)
 
-                self.assertFalse('Upgrading certbot-auto ' in out)
+                self.assertNotIn('Upgrading certbot-auto ', out)
-                self.assertTrue('Creating virtual environment...' in out)
+                self.assertIn('Creating virtual environment...', out)
 
     def test_openssl_failure(self):
         """Make sure we stop if the openssl signature check fails."""

letshelp-certbot/letshelp_certbot/apache.py

@@ -5,7 +5,6 @@ from __future__ import print_function
 
 import argparse
 import atexit
-import contextlib
 import os
 import re
 import shutil
@@ -302,8 +301,7 @@ def main():
     make_and_verify_selection(args.server_root, tempdir)
 
     tarpath = os.path.join(tempdir, "config.tar.gz")
-    # contextlib.closing used for py26 support
+    with tarfile.open(tarpath, mode="w:gz") as tar:
-    with contextlib.closing(tarfile.open(tarpath, mode="w:gz")) as tar:
         tar.add(tempdir, arcname=".")
 
     # TODO: Submit tarpath

letshelp-certbot/setup.py

@@ -31,10 +31,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

setup.py

@@ -52,13 +52,6 @@ install_requires = [
     'zope.interface',
 ]
 
-# env markers cause problems with older pip and setuptools
-if sys.version_info < (2, 7):
-    install_requires.extend([
-        'argparse',
-        'ordereddict',
-    ])
-
 dev_extras = [
     # Pin astroid==1.3.5, pylint==1.4.2 as a workaround for #289
     'astroid==1.3.5',
@@ -98,10 +91,8 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

tests/letstest/scripts/test_tox.sh

@@ -15,10 +15,4 @@ VENV_BIN=${VENV_PATH}/bin
 
 cd letsencrypt
 ./tools/venv.sh
-PYVER=`python --version 2>&1 | cut -d" " -f 2 | cut -d. -f1,2 | sed 's/\.//'`
-
-if [ $PYVER -eq 26 ] ; then
-    venv/bin/tox -e py26
-else
 venv/bin/tox -e py27
-fi

tests/run_http_server.py

@@ -3,7 +3,7 @@ import sys
 
 # Run Python's built-in HTTP server
 # Usage: python ./tests/run_http_server.py port_num
-# NOTE: This script should be compatible with 2.6, 2.7, 3.3+
+# NOTE: This script should be compatible with 2.7, 3.4+
 
 # sys.argv (port number) is passed as-is to the HTTP server module
 runpy.run_module(

tools/install_and_test.sh

@@ -18,10 +18,6 @@ for requirement in "$@" ; do
   pkg=$(echo $requirement | cut -f1 -d\[)  # remove any extras such as [dev]
   if [ $pkg = "." ]; then
     pkg="certbot"
-  else
-    # Work around a bug in pytest/importlib for the deprecated Python 3.3.
-    # See https://travis-ci.org/certbot/certbot/jobs/308774157#L1333.
-    pkg=$(echo "$pkg" | tr - _)
   fi
   "$(dirname $0)/pytest.sh" --pyargs $pkg
 done

tox.ini

@@ -4,7 +4,7 @@
 
 [tox]
 skipsdist = true
-envlist = modification,py{26,33,34,35,36},cover,lint
+envlist = modification,py{34,35,36},cover,lint
 
 [base]
 # pip installs the requested packages in editable mode
@@ -14,25 +14,22 @@ pip_install = {toxinidir}/tools/pip_install_editable.sh
 # before the script moves on to the next package. All dependencies are pinned
 # to a specific version for increased stability for developers.
 install_and_test = {toxinidir}/tools/install_and_test.sh
-py26_packages =
+all_packages =
     acme[dev] \
     .[dev] \
     certbot-apache \
     certbot-dns-cloudflare \
+    certbot-dns-cloudxns \
     certbot-dns-digitalocean \
+    certbot-dns-dnsimple \
+    certbot-dns-dnsmadeeasy \
     certbot-dns-google \
+    certbot-dns-luadns \
+    certbot-dns-nsone \
     certbot-dns-rfc2136 \
     certbot-dns-route53 \
     certbot-nginx \
     letshelp-certbot
-non_py26_packages =
-    certbot-dns-cloudxns \
-    certbot-dns-dnsimple \
-    certbot-dns-dnsmadeeasy \
-    certbot-dns-luadns \
-    certbot-dns-nsone
-all_packages =
-    {[base]py26_packages} {[base]non_py26_packages}
 install_packages =
     {toxinidir}/tools/pip_install_editable.sh {[base]all_packages}
 source_paths =
@@ -54,32 +51,15 @@ source_paths =
     letshelp-certbot/letshelp_certbot
     tests/lock_test.py
 
-[testenv:py26]
-commands =
-    {[base]install_and_test} {[base]py26_packages}
-    python tests/lock_test.py
-deps =
-    setuptools==36.8.0
-    wheel==0.29.0
-passenv = TRAVIS
-
 [testenv]
 commands =
-    {[testenv:py26]commands}
+    {[base]install_and_test} {[base]all_packages}
-    {[base]install_and_test} {[base]non_py26_packages}
+    python tests/lock_test.py
 setenv =
     PYTHONPATH = {toxinidir}
     PYTHONHASHSEED = 0
 passenv =
-    {[testenv:py26]passenv}
+    TRAVIS
-
-[testenv:py33]
-commands =
-    {[testenv]commands}
-deps =
-    wheel==0.29.0
-passenv =
-    {[testenv]passenv}
 
 [testenv:py27-oldest]
 commands =
@@ -104,7 +84,6 @@ passenv =
     {[testenv]passenv}
 
 [testenv:lint]
-# recent versions of pylint do not support Python 2.6 (#97, #187)
 basepython = python2.7
 # separating into multiple invocations disables cross package
 # duplicate code checking; if one of the commands fails, others will