Remove Python2 support

Author: Briar Scott

.github/workflows/python-ci.yml

@@ -7,7 +7,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [2.7, 3.6, 3.7, 3.8, 3.9]
+        python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps:
       - uses: actions/checkout@v2
@@ -17,12 +17,13 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Dependencies
         run: |
-          pip install -r requirements.txt
+          pip install .
           pip install -r tests/requirements.txt
       - name: Lint with flake8
         run: flake8
-      - name: Test with nose2
-        run: nose2
+      - name: Test with Python3 
+        working-directory: tests
+        run: python3 -m unittest
       - name: Demo dependencies
         working-directory: demo
         run: pip install -r requirements.txt
@@ -31,4 +32,4 @@ jobs:
         run: printf "[duo]\nclient_id=DIAAAAAAAAAAAAAAAAAA\nclient_secret=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\napi_hostname=example.duosecurity.com\nredirect_uri=http://localhost:8080\nfailmode=closed\n" > ./duo.conf
       - name: Verify flask can load demo
         working-directory: demo
-        run: flask routes
+        run: flask routes

README.md

@@ -7,7 +7,7 @@
 [![License](https://img.shields.io/badge/License-View%20License-orange)](https://github.com/duosecurity/duo_universal_python/blob/master/LICENSE)
 
 
-This SDK allows a web developer to quickly add Duo's interactive, self-service, two-factor authentication to any Python web login form. Both Python 2 and Python 3 are supported.
+This SDK allows a web developer to quickly add Duo's interactive, self-service, two-factor authentication to any Python3 web login form. Only Python 3 is supported.
 
 What's here:
 * `duo_universal` - The Python Duo SDK for interacting with the Duo Universal Prompt
@@ -17,7 +17,7 @@ What's here:
 ## Getting Started
 To use the SDK in your existing development environment, install it from pypi (https://pypi.org/project/duo_universal).
 ```
-pip install duo_universal
+pip3 install duo_universal
 ```
 Once it's installed, see our developer documentation at https://duo.com/docs/duoweb and `demo/app.py` in this repo for guidance on integrating Duo 2FA into your web application.
 
@@ -26,37 +26,29 @@ To contribute, fork this repo and make a pull request with your changes when the
 
 If you're not already working from a dedicated development environment, it's recommended a virtual environment is used. Assuming a virtual environment named `env`, create and activate the environment:
 ```
-# Python 3
-python -m venv env
-source env/bin/activate
-
-# Python 2
-virtualenv env
+python3 -m venv env
 source env/bin/activate
 ```
 
 Build and install the SDK from source:
 ```
-pip install -r requirements.txt
-pip install .
+pip3 install -r requirements.txt
+pip3 install .
 ```
 
 ## Tests
 Install the test requirements:
 ```
 cd tests
-pip install -r requirements.txt
+pip3 install -r requirements.txt
 ```
 Then run tests from the `test` directory:
 ```
 # Run an individual test file
-python <test_name>.py
-
-# Run all tests with nose
-nose2
+python3 <test_name>.py
 
 # Run all tests with unittest
-python -m unittest
+python3 -m unittest
 ```
 
 ## Lint

demo/README.md

@@ -1,6 +1,6 @@
 # Duo Universal Python SDK Demo
 
-A simple Python web application that serves a logon page integrated with Duo 2FA.
+A simple Python3 web application that serves a logon page integrated with Duo 2FA.
 
 ## Setup
 Change to the "demo" directory
@@ -10,18 +10,13 @@ cd demo
 
 Set up a virtual environment
 ```
-# Python 3
-python -m venv env
-source env/bin/activate
-
-# Python 2
-virtualenv env
+python3 -m venv env
 source env/bin/activate
 ```
 
 Install the demo requirements:
 ```
-pip install -r requirements.txt
+pip3 install -r requirements.txt
 ```
 
 Then, create a `Web SDK` application in the Duo Admin Panel. See https://duo.com/docs/protecting-applications for more details.
@@ -31,7 +26,7 @@ Then, create a `Web SDK` application in the Duo Admin Panel. See https://duo.com
 1. Copy the Client ID, Client Secret, and API Hostname values for your `Web SDK` application into the `duo.conf` file.
 1. Start the app.
     ```
-    python app.py
+    python3 app.py
     ```
 1. Navigate to http://localhost:8080. 
 1. Log in with the user you would like to enroll in Duo or with an already enrolled user (any password will work).

duo_universal/client.py

@@ -1,4 +1,4 @@
-from six.moves.urllib.parse import urlencode
+from urllib.parse import urlencode
 import time
 import jwt
 import requests

setup.py

@@ -48,8 +48,9 @@ def get_version(rel_path):
     description='Duo Web SDK for two-factor authentication',
     long_description=long_description,
     long_description_content_type='text/markdown',
+    python_requires='>=3',
     classifiers=[
-        'Programming Language :: Python',
+        'Programming Language :: Python :: 3',
         'License :: OSI Approved :: BSD License'
     ],
     install_requires=install_requires,

tests/requirements.txt

@@ -1,4 +1,3 @@
 mock>=3.0.5
-nose2>=0.9.1
 flake8>=3.7.9
 dlint>=0.9.2

tests/test_create_auth.py

@@ -1,4 +1,4 @@
-from six.moves.urllib.parse import urlencode
+from urllib.parse import urlencode
 from duo_universal import client
 from mock import MagicMock, patch
 import jwt