[MRG+1] Python 3.9 support (#395)

* First pass at 3.9 support

* Use 3.9 for nightly

* Fix UCS

* Use python version in cache key

* Actually add the job to Circle

* Update whats_new

.circleci/config.yml

@@ -89,6 +89,13 @@ jobs:
     steps:
       - make-unit-test
 
+  cpython39:
+    docker:
+      - image: python:3.9
+    working_directory: ~/pmdarima
+    steps:
+      - make-unit-test
+
   build-doc:
     docker:
       - image: alkalineml/pmdarima-doc-base:latest
@@ -179,6 +186,16 @@ jobs:
           pythonversion: "3.8"
       - deploy-to-pypi
 
+  deploy-cpython39-whl:
+    machine:
+      image: circleci/classic:latest
+    working_directory: ~/pmdarima
+    steps:
+      - checkout
+      - build-whl-file:
+          pythonversion: "3.9"
+      - deploy-to-pypi
+
   # For documentation deployment. You'll need the following environment vars
   # in your Circle CI settings, otherwise this will not work.
   #
@@ -213,6 +230,8 @@ workflows:
             filters: *test-filters
         - cpython38:
             filters: *test-filters
+        - cpython39:
+            filters: *test-filters
         - build-doc:
             filters: *test-filters
         - test-linting:
@@ -224,6 +243,7 @@ workflows:
                 - cpython36
                 - cpython37
                 - cpython38
+                - cpython39
                 - build-doc
                 - test-linting
                 - test-install-from-sdist
@@ -250,3 +270,8 @@ workflows:
             filters: *deploy-filters
             requires:
               - deploy-doc
+
+        - deploy-cpython39-whl:
+            filters: *deploy-filters
+            requires:
+              - deploy-doc

.github/workflows/build_and_deploy.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest]
-        python-version: ['3.6', '3.7', '3.8']
+        python-version: ['3.6', '3.7', '3.8', '3.9']
         architecture: ['x86', 'x64']
         exclude:
           # Don't build 32-bit on Mac

.github/workflows/nightly_cron.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        python-version: ['3.8']
+        python-version: ['3.9']
         architecture: ['x86', 'x64']
         exclude:
           # Don't build 32-bit on Mac or Linux
@@ -83,7 +83,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ steps.pip-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/dependencies_key.txt') }}
+          key: ${{ runner.os }}-${{ matrix.python-version }}-pip-${{ hashFiles('**/dependencies_key.txt') }}
 
       # We install one-by-one because some dependencies depend on others
       - name: Installing dependencies

build_tools/circle/build_wheel.sh

@@ -9,7 +9,7 @@ function build_wheel {
 
     # https://www.python.org/dev/peps/pep-0513/#ucs-2-vs-ucs-4-builds
     ucs_tag="m"
-    if [ "$pyver" = "3.8" ]; then
+    if [ "$pyver" = "3.8"  || "$pyver" = "3.9" ]; then
         ucs_tag=""
     elif [ "$ucs_setting" = "ucs4" ]; then
         ucs_tag="${ucs_tag}u"

doc/whats_new.rst

@@ -19,6 +19,8 @@ v0.8.1) will document the latest features.
 
 * No longer pin Cython to ``<0.29.18``
 
+* Add support for Python 3.9
+
 
 `v1.8.0 <http://alkaline-ml.com/pmdarima/1.8.0/>`_
 --------------------------------------------------

setup.py

@@ -241,6 +241,7 @@ def do_setup():
                         'Programming Language :: Python :: 3.6',
                         'Programming Language :: Python :: 3.7',
                         'Programming Language :: Python :: 3.8',
+                        'Programming Language :: Python :: 3.9',
                         ('Programming Language :: Python :: '
                          'Implementation :: CPython'),
                     ],