Drop support for Python 2.7

.github/workflows/validate.yml

@@ -13,32 +13,22 @@ jobs:
     strategy:
       matrix:
         python-version: [
-          "2.7",
           "3.5",
           "3.6",
           "3.7",
           "3.8",
           "3.9",
           "3.10",
           "3.11",
-          "pypy-2.7",
           "pypy-3.8",
         ]
         os: [ubuntu-latest, windows-latest, macos-latest]
         exclude:
-          - python-version: "2.7"
-            os: "ubuntu-latest"
-          - python-version: "2.7"
-            os: "windows-latest"
-          - python-version: "2.7"
-            os: "macos-latest"
           - python-version: "3.5"
             os: "ubuntu-latest"
           - python-version: "3.6"
             os: "ubuntu-latest"
         include:
-          - python-version: "2.7"
-            os: "ubuntu-20.04"
           - python-version: "3.5"
             os: "ubuntu-20.04"
           - python-version: "3.6"
@@ -48,19 +38,12 @@ jobs:
       TOXENV: py
     steps:
       - uses: actions/checkout@v3
-      - if: ${{ matrix.python-version == '2.7' }}
-        run: |
-          sudo apt-get install python-is-python2
-          curl -sSL https://bootstrap.pypa.io/pip/2.7/get-pip.py -o get-pip.py
-          python get-pip.py
-        name: Set up Python ${{ matrix.python-version }} on ${{ matrix.os }}
-      - if: ${{ matrix.python-version != '2.7' }}
-        name: Set up Python ${{ matrix.python-version }} on ${{ matrix.os }}
+      - name: Set up Python ${{ matrix.python-version }} on ${{ matrix.os }}
         uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
-        run: python -m pip install -U tox six
+        run: python -m pip install -U tox
       - name: Install zic (Windows)
         run: |
           curl https://get.enterprisedb.com/postgresql/postgresql-9.5.21-2-windows-x64-binaries.zip --output $env:GITHUB_WORKSPACE\postgresql9.5.21.zip

CONTRIBUTING.md

@@ -93,10 +93,10 @@ pip install -r requirements-dev.txt
 
 ## Testing
 
-The best way to test `dateutil` is to run `tox`. By default, `tox` will test against all supported versions of Python installed on your system. To limit the number of tests, run a specific subset of environments. For example, to run only on Python 2.7 and Python 3.6:
+The best way to test `dateutil` is to run `tox`. By default, `tox` will test against all supported versions of Python installed on your system. To limit the number of tests, run a specific subset of environments. For example, to run only on Python 3.6 and Python 3.12:
 
 ```bash
-tox -e py27,py36
+tox -e py36,py12
 ```
 
 You can also pass arguments to `pytest` through `tox` by placing them after `--`:

appveyor.yml

@@ -24,7 +24,6 @@ install:
 
   # This frequently fails with network errors, so we'll retry it up to 5 times
   # with a 1 minute rate limit.
-  - "%PYTHON% -m pip install six"
   - "ci_tools/retry.bat %PYTHON% updatezinfo.py"
   # This environment variable tells the test suite it's OK to mess with the time zone.
   - set DATEUTIL_MAY_CHANGE_TZ=1

azure-pipelines.yml

@@ -3,8 +3,6 @@ pool:
 
 strategy:
   matrix:
-    Python27:
-      python.version: '2.7'
     Python34:
       python.version: '3.4'
     Python35:
@@ -26,14 +24,8 @@ strategy:
       python.version: '3.6'
       POOL_IMAGE: vs2017-win2016
       installzic: 'windows'
-    PyPy:
-      python.version: 'pypy2'
     PyPy3:
       python.version: 'pypy3'
-    WindowsPyPy2:
-      python.version: 'pypy2'
-      POOL_IMAGE: vs2017-win2016
-      installzic: 'windows'
     WindowsPyPy3:
       python.version: 'pypy3'
       POOL_IMAGE: vs2017-win2016
@@ -49,7 +41,7 @@ steps:
     versionSpec: $(python.version)
 
 - bash: |
-    python -m pip install -U six && python -m pip install -U 'tox < 3.8.0'
+    python -m pip install -U 'tox < 3.8.0'
     if [[ $PYTHON_VERSION == "3.3" ]]; then pip install 'virtualenv<16.0'; fi
     if [[ $PYTHON_VERSION == "3.3" ]]; then pip install 'setuptools<40.0'; fi
   displayName: Ensure prereqs

changelog.d/1344.deprecation.rst

@@ -0,0 +1 @@
+Dropped support for Python 2.7. Fixed by @pquentin.

docs/conf.py

@@ -188,7 +188,7 @@
 
 # -- Options for autodoc -------------------------------------------------
 
-autodoc_mock_imports = ['ctypes.wintypes', 'six.moves.winreg']
+autodoc_mock_imports = ['ctypes.wintypes']
 
 # Need to mock this out specifically to avoid errors
 import ctypes

pyproject.toml

@@ -57,7 +57,6 @@ known_first_party = ["dateutil"]
 known_third_party=[
     "pytest",
     "hypothesis",
-    "six",
     "freezegun",
     "mock",
 ]

requirements-dev.txt

@@ -1,4 +1,3 @@
-six
 pytest >= 3.0; python_version != '3.3'
 pytest-cov >= 2.0.0
 freezegun ; python_version != '3.3'

requirements/3.3/constraints.txt

@@ -10,6 +10,5 @@ py==1.4.34
 pytest==3.2.5
 pytest-cov==2.5.1
 setuptools==39.2.0
-six==1.12.0
 tox==2.9.1
 virtualenv==15.2.0

setup.cfg

@@ -21,8 +21,6 @@ classifiers =
     License :: OSI Approved :: BSD License
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.3
     Programming Language :: Python :: 3.4
@@ -39,10 +37,9 @@ classifiers =
 [options]
 zip_safe = True
 setup_requires = setuptools_scm
-install_requires = six >= 1.5
 package_dir=
     =src
-python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*
+python_requires = >=3.3
 packages = find:
 
 [options.packages.find]

src/dateutil/parser/_parser.py

@@ -39,9 +39,6 @@
 from calendar import monthrange
 from io import StringIO
 
-import six
-from six import integer_types, text_type
-
 from decimal import Decimal
 
 from warnings import warn
@@ -63,7 +60,7 @@ def __init__(self, instream):
         if isinstance(instream, (bytes, bytearray)):
             instream = instream.decode()
 
-        if isinstance(instream, text_type):
+        if isinstance(instream, str):
             instream = StringIO(instream)
         elif getattr(instream, 'read', None) is None:
             raise TypeError('Parser must be a string or character stream, not '
@@ -193,9 +190,6 @@ def __next__(self):
 
         return token
 
-    def next(self):
-        return self.__next__()  # Python 2.x support
-
     @classmethod
     def split(cls, s):
         return list(cls(s))
@@ -648,7 +642,7 @@ def parse(self, timestr, default=None,
         try:
             ret = self._build_naive(res, default)
         except ValueError as e:
-            six.raise_from(ParserError(str(e) + ": %s", timestr), e)
+            raise ParserError(str(e) + ": %s", timestr) from e
 
         if not ignoretz:
             ret = self._build_tzaware(ret, res, tzinfos)
@@ -878,7 +872,7 @@ def _parse_numeric_token(self, tokens, idx, info, ymd, res, fuzzy):
         try:
             value = self._to_decimal(value_repr)
         except Exception as e:
-            six.raise_from(ValueError('Unknown numeric token'), e)
+            raise ValueError('Unknown numeric token') from e
 
         len_li = len(value_repr)
 
@@ -1147,7 +1141,7 @@ def _to_decimal(self, val):
                 raise ValueError("Converted decimal value is infinite or NaN")
         except Exception as e:
             msg = "Could not convert %s to decimal" % val
-            six.raise_from(ValueError(msg), e)
+            raise ValueError(msg) from e
         else:
             return decimal_value
 
@@ -1165,9 +1159,9 @@ def _build_tzinfo(self, tzinfos, tzname, tzoffset):
         # eg tzinfos = {'BRST' : None}
         if isinstance(tzdata, datetime.tzinfo) or tzdata is None:
             tzinfo = tzdata
-        elif isinstance(tzdata, text_type):
+        elif isinstance(tzdata, str):
             tzinfo = tz.tzstr(tzdata)
-        elif isinstance(tzdata, integer_types):
+        elif isinstance(tzdata, int):
             tzinfo = tz.tzoffset(tzname, tzdata)
         else:
             raise TypeError("Offset must be tzinfo subclass, tz string, "

src/dateutil/parser/isoparser.py

@@ -14,7 +14,6 @@
 from functools import wraps
 
 import re
-import six
 
 __all__ = ["isoparse", "isoparser"]
 
@@ -26,13 +25,13 @@ def func(self, str_in, *args, **kwargs):
         str_in = getattr(str_in, 'read', lambda: str_in)()
 
         # If it's unicode, turn it into bytes, since ISO-8601 only covers ASCII
-        if isinstance(str_in, six.text_type):
+        if isinstance(str_in, str):
             # ASCII is the same in UTF-8
             try:
                 str_in = str_in.encode('ascii')
             except UnicodeEncodeError as e:
                 msg = 'ISO-8601 strings should contain only ASCII characters'
-                six.raise_from(ValueError(msg), e)
+                raise ValueError(msg) from e
 
         return f(self, str_in, *args, **kwargs)
 

src/dateutil/relativedelta.py

@@ -5,7 +5,6 @@
 import operator
 from math import copysign
 
-from six import integer_types
 from warnings import warn
 
 from ._common import weekday
@@ -200,7 +199,7 @@ def __init__(self, dt1=None, dt2=None,
                      "This is not a well-defined condition and will raise " +
                      "errors in future versions.", DeprecationWarning)
 
-            if isinstance(weekday, integer_types):
+            if isinstance(weekday, int):
                 self.weekday = weekdays[weekday]
             else:
                 self.weekday = weekday
@@ -489,8 +488,6 @@ def __bool__(self):
                     self.minute is None and
                     self.second is None and
                     self.microsecond is None)
-    # Compatibility with Python 2.x
-    __nonzero__ = __bool__
 
     def __mul__(self, other):
         try: