fixes #451 fixes #452: sunset 3.6

.travis.yml

@@ -8,14 +8,11 @@ matrix:
           env:
             - COVERAGE="true"
 
-        - python: '3.6'
+        - python: '3.7'
           env:
             - COVERAGE="true"
             - NUMPY="true"
 
-        - python: '3.7'
-          env:
-
         - python: '3.8'
           env:
 
@@ -32,10 +29,6 @@ matrix:
           dist: xenial
           env:
 
-        - python: 'pypy3.6-7.3.3' # most recent
-          dist: bionic
-          env:
-
         - python: 'pypy3.7-7.3.5' # most recent
           dist: bionic
           env:

setup.py

@@ -12,8 +12,8 @@
 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, 6):
-    unsupported = 'Versions of Python before 3.6 are not supported'
+elif (3, 0) <= sys.version_info < (3, 7):
+    unsupported = 'Versions of Python before 3.7 are not supported'
 if unsupported:
     raise ValueError(unsupported)
 
@@ -170,7 +170,7 @@
 
 ``dill`` requires:
 
-    - ``python`` (or ``pypy``), **version == 2.7** or **version >= 3.6**
+    - ``python`` (or ``pypy``), **version == 2.7** or **version >= 3.7**
 
 Optional requirements:
 
@@ -341,7 +341,6 @@ def write_info_py(filename='dill/info.py'):
                      'Programming Language :: Python :: 2',
                      'Programming Language :: Python :: 2.7',
                      'Programming Language :: Python :: 3',
-                     'Programming Language :: Python :: 3.6',
                      'Programming Language :: Python :: 3.7',
                      'Programming Language :: Python :: 3.8',
                      'Programming Language :: Python :: 3.9',

tox.ini

@@ -7,14 +7,14 @@ envlist =
 #   py33
 #   py34
 #   py35
-    py36
+#   py36
     py37
     py38
     py39
     py310
     py311
 #   pypy27
-    pypy36
+#   pypy36
     pypy37
     pypy38