Support for Python 3.8

.travis.yml

@@ -1,4 +1,5 @@
 language: python
+dist: xenial
 matrix:
   include:
   - python: '3.5'
@@ -7,13 +8,12 @@ matrix:
     env: NOXSESSION="tests-3.6"
   - python: '3.7'
     env: NOXSESSION="tests-3.7"
-    dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
-  - python: '3.7'
+  - python: '3.8'
+    env: NOXSESSION="tests-3.8"
+  - python: '3.8'
     env: NOXSESSION="lint"
-    dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
-  - python: '3.7'
+  - python: '3.8'
     env: NOXSESSION="docs"
-    dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
 before_install:
   - wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
   - chmod +x miniconda.sh

CONTRIBUTING.md

@@ -42,6 +42,7 @@ To run against a particular Python version:
     nox --session tests-3.5
     nox --session tests-3.6
     nox --session tests-3.7
+    nox --session tests-3.8
 
 When you send a pull request Travis will handle running everything, but it is
 recommended to test as much as possible locally before pushing.

appveyor.yml

@@ -10,16 +10,22 @@ environment:
     # a later point release.
     # See: http://www.appveyor.com/docs/installed-software#python
 
+    - PYTHON: "C:\\Python38"
+      # There is no miniconda for python3.8 at this time
+      CONDA: "C:\\Miniconda37"
+      NOX_SESSION: "tests-3.8"
+
+    - PYTHON: "C:\\Python38-x64"
+      # There is no miniconda for python3.8 at this time
+      CONDA: "C:\\Miniconda37-x64"
+      NOX_SESSION: "tests-3.8"
+
     - PYTHON: "C:\\Python37"
-      # Python 3.7 conda installation appears to be broken on Appveyor:
-      # TypeError: LoadLibrary() argument 1 must be str, not None
-      CONDA: "C:\\Miniconda36"
+      CONDA: "C:\\Miniconda37"
       NOX_SESSION: "tests-3.7"
 
     - PYTHON: "C:\\Python37-x64"
-      # Python 3.7 conda installation appears to be broken on Appveyor:
-      # TypeError: LoadLibrary() argument 1 must be str, not None
-      CONDA: "C:\\Miniconda36-x64"
+      CONDA: "C:\\Miniconda37-x64"
       NOX_SESSION: "tests-3.7"
 
     - PYTHON: "C:\\Python36"

docs/config.rst

@@ -112,11 +112,11 @@ When you provide a version number, Nox automatically prepends python to determin
     def tests(session):
         pass
 
-When collecting your sessions, Nox will create a separate session for each interpreter. You can see these sesions when running ``nox --list``. For example this Noxfile:
+When collecting your sessions, Nox will create a separate session for each interpreter. You can see these sessions when running ``nox --list``. For example this Noxfile:
 
 .. code-block:: python
 
-    @nox.session(python=['2.7', '3.5', '3.6', '3.7'])
+    @nox.session(python=['2.7', '3.5', '3.6', '3.7', '3.8'])
     def tests(session):
         pass
 
@@ -128,6 +128,7 @@ Will produce these sessions:
     * tests-3.5
     * tests-3.6
     * tests-3.7
+    * tests-3.8
 
 Note that this expansion happens *before* parameterization occurs, so you can still parametrize sessions with multiple interpreters.
 
@@ -222,7 +223,7 @@ When you run ``nox``, it will create a two distinct sessions:
     nox > Running session tests(django='1.9')
     nox > pip install django==1.9
     ...
-    nox > Running session tests(djano='2.0')
+    nox > Running session tests(django='2.0')
     nox > pip install django==2.0
 
 

noxfile.py

@@ -19,7 +19,7 @@
 ON_APPVEYOR = os.environ.get("APPVEYOR") == "True"
 
 
-@nox.session(python=["3.5", "3.6", "3.7"])
+@nox.session(python=["3.5", "3.6", "3.7", "3.8"])
 def tests(session):
     """Run test suite with pytest."""
     session.install("-r", "requirements-test.txt")
@@ -31,7 +31,7 @@ def tests(session):
     session.notify("cover")
 
 
-@nox.session(python=["3.5", "3.6", "3.7"], venv_backend="conda")
+@nox.session(python=["3.5", "3.6", "3.7", "3.8"], venv_backend="conda")
 def conda_tests(session):
     """Run test suite with pytest."""
     session.conda_install(
@@ -55,7 +55,7 @@ def cover(session):
     session.run("coverage", "erase")
 
 
-@nox.session(python="3.7")
+@nox.session(python="3.8")
 def blacken(session):
     """Run black code formater."""
     session.install("black==19.3b0", "isort==4.3.21")
@@ -64,7 +64,7 @@ def blacken(session):
     session.run("isort", "--recursive", *files)
 
 
-@nox.session(python="3.7")
+@nox.session(python="3.8")
 def lint(session):
     session.install("flake8==3.7.8", "black==19.3b0", "mypy==0.720")
     session.run("mypy", "nox")
@@ -73,7 +73,7 @@ def lint(session):
     session.run("flake8", "nox", *files)
 
 
-@nox.session(python="3.7")
+@nox.session(python="3.8")
 def docs(session):
     """Build the documentation."""
     session.run("rm", "-rf", "docs/_build", external=True)

setup.py

@@ -18,7 +18,6 @@
 
 long_description = open("README.rst", "r", encoding="utf-8").read()
 
-
 setup(
     name="nox",
     version="2019.11.9",
@@ -39,6 +38,7 @@
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Operating System :: POSIX",
         "Operating System :: MacOS",
         "Operating System :: Unix",