fix: uqfoundation#413, fix: uqfoundation#453, drop 2.7 support

.travis.yml

@@ -3,11 +3,6 @@ language: python
 
 matrix:
     include:
-        - python: '2.7'
-          dist: bionic
-          env:
-            - COVERAGE="true"
-
         - python: '3.7'
           env:
 
@@ -25,17 +20,11 @@ matrix:
         - python: '3.11-dev'
           env:
 
-        - python: 'pypy2.7-7.3.1' # most recent
-          dist: xenial
-          env:
-
         - python: 'pypy3.7-7.3.5' # most recent
           dist: bionic
           env:
 
     allow_failures:
-        - python: '2.7'
-        - python: 'pypy2.7-7.3.1'
         - python: '3.11-dev'
     fast_finish: true
 

README.md

@@ -102,7 +102,7 @@ Requirements
 ------------
 ``dill`` requires:
 
-* ``python`` (or ``pypy``), **==2.7** or **>=3.7**
+* ``python`` (or ``pypy``), **>=3.7**
 * ``setuptools``, **>=42**
 
 Optional requirements:

dill/__init__.py

@@ -116,7 +116,7 @@
 
 ``dill`` requires:
 
-    - ``python`` (or ``pypy``), **==2.7** or **>=3.7**
+    - ``python`` (or ``pypy``), **>=3.7**
     - ``setuptools``, **>=42**
 
 Optional requirements:

setup.cfg

@@ -2,7 +2,6 @@
 tag_build = .dev0
 
 [bdist_wheel]
-#universal = 1
 #python-tag = py3
 #plat-name = manylinux1_x86_64
 

setup.py

@@ -9,12 +9,8 @@
 import os
 import sys
 # drop support for older python
-unsupported = None
-if sys.version_info < (2, 7):
-    unsupported = 'Versions of Python before 2.7 are not supported'
-elif (3, 0) <= sys.version_info < (3, 7):
+if sys.version_info < (3, 7):
     unsupported = 'Versions of Python before 3.7 are not supported'
-if unsupported:
     raise ValueError(unsupported)
 
 # get distribution meta info
@@ -84,14 +80,12 @@
         'Source Code':'https://github.com/uqfoundation/dill',
         'Bug Tracker':'https://github.com/uqfoundation/dill/issues',
     },
-    python_requires = '>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*',
+    python_requires = '>=3.7',
     classifiers = [
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
         'Intended Audience :: Science/Research',
         'License :: OSI Approved :: BSD License',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',

tox.ini

@@ -2,19 +2,11 @@
 skip_missing_interpreters=
     True
 envlist =
-#   py26
-#   py27
-#   py33
-#   py34
-#   py35
-#   py36
     py37
     py38
     py39
     py310
     py311
-#   pypy27
-#   pypy36
     pypy37
     pypy38
     pypy39