Merge pull request #671 from opencobra/deprecate_py2

Deprecate py2

.travis.yml

@@ -3,9 +3,9 @@ node_js: "node"
 os:
   - linux
 python:
+  - "3.7"
   - "3.6"
   - "3.5"
-  - "2.7"
 sudo: false
 git:
   depth: 2

README.rst

@@ -61,6 +61,14 @@ at via GitHub pages for your repository.
 Installation
 ============
 
+**Please Note**: With its
+`retirement on the horizon <https://pythonclock.org>`_ we decided to stop
+testing against Python 2.7,
+and `like many others <https://python3statement.org>`_, want to focus entirely
+on Python 3.
+Hence, we cannot guarantee that `memote` will still function as expected
+on older versions of Python.
+
 Before installing `memote`, make sure that you have correctly installed the
 latest version of `git <https://git-scm.com/>`_.
 

docs/installation.rst

@@ -4,6 +4,14 @@
 Installation
 ============
 
+**Please Note**: With its
+`retirement on the horizon <https://pythonclock.org>`_ we decided to stop
+testing against Python 2.7,
+and `like many others <https://python3statement.org>`_, want to focus entirely
+on Python 3.
+Hence, we cannot guarantee that `memote` will still function as expected
+
+
 Before installing memote, make sure that you have correctly installed the
 latest version of `git`_.
 

setup.cfg

@@ -24,9 +24,6 @@ classifiers =
 	Topic :: Scientific/Engineering :: Bio-Informatics
 	License :: OSI Approved :: Apache Software License
 	Natural Language :: English
-	Programming Language :: Python :: 2
-	Programming Language :: Python :: 2.7
-	Programming Language :: Python :: 3
 	Programming Language :: Python :: 3.5
 	Programming Language :: Python :: 3.6
 	Programming Language :: Python :: 3.7

src/memote/__init__.py

@@ -30,6 +30,16 @@
 from memote.suite.reporting import *
 from memote.jinja2_extension import *
 
+import sys
+import warnings
+
 __author__ = "Moritz E. Beber"
 __email__ = "morbeb@biosustain.dtu.dk"
 __version__ = "0.9.12"
+
+if sys.version_info < (3,):
+    warnings.warn('You are using `Memote` with Python 2. '
+                  'Memote will soon be Python 3 only, and we have ceased to '
+                  'test against Python 2. This means that memote may no '
+                  'longer work as exprected. Please consider migrating to '
+                  'Python 3.', FutureWarning)