updated docs and comments

.github/workflows/ci.yml

@@ -61,8 +61,8 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install --upgrade tox coveralls
+          python3 -m pip install --upgrade pip
+          python3 -m pip install --upgrade tox coveralls
 
       - name: Run tox (${{ env.TOXENV }})
         # See TOXENV environment variable for the testenv to be executed here
@@ -99,6 +99,6 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          python -m pip install --upgrade pip
-          pip install --upgrade coveralls
+          python3 -m pip install --upgrade pip
+          python3 -m pip install --upgrade coveralls
           coveralls --finish

docs/CLI.md

@@ -3,7 +3,7 @@
 The TUF command-line interface (CLI) requires a full
 [TUF installation](INSTALLATION.rst).  Be sure to include the installation of
 extra dependencies and C extensions (
-```pip install securesystemslib[crypto,pynacl]```).
+```python3 -m pip install securesystemslib[crypto,pynacl]```).
 
 The use of the CLI is documented with examples below.
 
@@ -279,12 +279,6 @@ Enter a password for the encrypted key (tufkeystore/mykey):
 
 Serve the repo
 ```Bash
-$ cd tufrepo/
-$ python -m SimpleHTTPServer 8001
-```
-
-If running python 3:
-```Bash
 $ python3 -m http.server 8001
 ```
 
@@ -412,12 +406,6 @@ $ repo.py --add README.txt --role role_x --sign tufkeystore/key_x tufkeystore/ke
 
 Serve the repo
 ```Bash
-$ cd tufrepo/
-$ python -m SimpleHTTPServer 8001
-```
-
-If running python 3:
-```Bash
 $ python3 -m http.server 8001
 ```
 

docs/CONTRIBUTORS.rst

@@ -79,7 +79,7 @@ and instructions for installing locally from source are provided here:
     $ curl -O https://pypi.python.org/packages/source/v/virtualenv/virtualenv-15.0.3.tar.gz
     $ tar xvfz virtualenv-15.0.3.tar.gz
     $ cd virtualenv-15.0.3
-    $ python virtualenv.py myVE
+    $ python3 virtualenv.py myVE
 
 
 Development Installation
@@ -102,7 +102,7 @@ To work on the TUF project, it's best to perform a development install.
 
 ::
 
-    $ pip install -r requirements-dev.txt
+    $ python3 -m pip install -r requirements-dev.txt
 
 
 Auto-formatting
@@ -134,15 +134,15 @@ dependencies must already be installed (see above).
 ::
 
     $ cd tests
-    $ python aggregate_tests.py
+    $ python3 aggregate_tests.py
 
 Individual tests can also be executed. Optional '-v' flags can be added to
 increase log level up to DEBUG ('-vvvv').
 ::
 
-    $ python test_updater.py # run a specific test file
-    $ python test_updater.py TestUpdater.test_4_refresh # run a specific test
-    $ python test_updater.py -vvvv TestUpdater.test_4_refresh # run test with DEBUG log level
+    $ python3 test_updater.py # run a specific test file
+    $ python3 test_updater.py TestUpdater.test_4_refresh # run a specific test
+    $ python3 test_updater.py -vvvv TestUpdater.test_4_refresh # run test with DEBUG log level
 
 
 All of the log levels and the corresponding options that could be used for testing are:
@@ -180,9 +180,9 @@ a *venv*), and then install ``securesystemslib`` in editable mode too (in the sa
 ::
 
     $ cd path/to/tuf
-    $ pip install -r requirements-dev.txt
+    $ python3 -m pip install -r requirements-dev.txt
     $ cd path/to/securesystemslib
-    $ pip install -r requirements-dev.txt
+    $ python3 -m pip install -r requirements-dev.txt
 
 
 With `tox <https://testrun.org/tox/>`_ the test suite can be executed in a

docs/INSTALLATION.rst

@@ -41,22 +41,22 @@ If you are only using ed25519-based cryptography, you can employ a pure-Python
 installation, done simply with one of the following commands:
 
 Installing from Python Package Index (https://pypi.python.org/pypi).
-(Note: Please use "pip install --no-use-wheel tuf" if your version
+(Note: Please use "python3 -m pip install --no-use-wheel tuf" if your version
 of pip <= 1.5.6)
 ::
-    $ pip install tuf
+    $ python3 -m pip install tuf
 
 
 **Alternatively**, if you wish to install from a GitHub release you've already
 downloaded, or a package you obtained in another way, you can instead:
 
 Install from a local source archive:
 ::
-    $ pip install <path to archive>
+    $ python3 -m pip install <path to archive>
 
 Or install from the root directory of the unpacked archive:
 ::
-    $ pip install .
+    $ python3 -m pip install .
 
 
 
@@ -70,7 +70,7 @@ securesystemslib.  **Note**: that may require non-Python dependencies, so if
 you encounter an error attempting this pip command, see
 `more instructions below <#non-python-dependencies>`_).
 ::
-    $ pip install securesystemslib[crypto,pynacl] tuf
+    $ python3 -m pip install securesystemslib[crypto,pynacl] tuf
 
 
 
@@ -96,5 +96,5 @@ Fedora-based distributions can instead install these libraries with dnf.
 OS X users can install these header libraries with the `Homebrew <https://brew.sh/>`_
 package manager, among other options.
 ::
-    $ brew install python
+    $ brew install python3
     $ brew install libffi

docs/QUICKSTART.md

@@ -15,7 +15,7 @@ how TUF works, however.  It will serve as a very basic update system.
 
 Make sure that TUF is installed, along with some of the optional cryptographic
 libraries and C extensions.  Try this command to do that:
-`pip install securesystemslib[colors,crypto,pynacl] tuf`
+`python3 -m pip install securesystemslib[colors,crypto,pynacl] tuf`
 
 If you run into errors during that pip command, please consult the more
 detailed [TUF Installation Instructions](INSTALLATION.rst).  (There are some
@@ -81,10 +81,6 @@ repository's metadata.
 ```Bash
 $ cd "tufrepo/"
 $ python3 -m http.server 8001
-
-# or, if you are using Python2:
-$ python -m SimpleHTTPServer 8001
-
 ```
 
 **Step (4)** - Obtain and verify the `testfile` update on a client.

docs/TUTORIAL.md

@@ -674,11 +674,6 @@ repository example created earlier in this document.
 ## Test TUF Locally ##
 Run the local TUF repository server.
 ```Bash
-$ cd "repository/"; python -m SimpleHTTPServer 8001
-```
-
-If running Python 3:
-```Bash
 $ cd "repository/"; python3 -m http.server 8001
 ```
 

requirements.txt

@@ -26,9 +26,9 @@
 # 1. Use this script to create a pinned requirements file for each Python
 #    version
 # ```
-# for v in 2.7 3.6 3.7 3.8 3.9; do
+# for v in 3.6 3.7 3.8 3.9; do
 #   mkvirtualenv tuf-env-${v} -p python${v};
-#   pip install pip-tools;
+#   python3 -m pip install pip-tools;
 #   pip-compile --no-header -o requirements-${v}.txt requirements.txt;
 #   deactivate;
 #   rmvirtualenv tuf-env-${v};

setup.py

@@ -23,26 +23,26 @@
   distributed to other users.  The packaged source is saved to the 'dist'
   folder in the current directory.
 
-  $ python setup.py sdist
+  $ python3 setup.py sdist
 
 
   INSTALLATION OPTIONS
 
   pip - installing and managing Python packages (recommended):
 
   # Installing from Python Package Index (https://pypi.python.org/pypi).
-  $ pip install tuf
+  $ python3 -m pip install tuf
 
   # Installing from local source archive.
-  $ pip install <path to archive>
+  $ python3 -m pip install <path to archive>
 
   # Or from the root directory of the unpacked archive.
-  $ pip install .
+  $ python3 -m pip install .
 
   # Installing optional requirements (i.e., after installing tuf).
   # Support for creation of Ed25519 signatures and support for RSA and ECDSA
   # signatures in general requires optional dependencies:
-  $ pip install securesystemslib[crypto,pynacl]
+  $ python3 -m pip install securesystemslib[crypto,pynacl]
 
 
   Alternate installation options:
@@ -51,13 +51,13 @@
   run one of the following shell commands:
 
   Install to the global site-packages directory.
-  $ python setup.py install
+  $ python3 setup.py install
 
   Install to the user site-packages directory.
-  $ python setup.py install --user
+  $ python3 setup.py install --user
 
   Install to a chosen directory.
-  $ python setup.py install --home=<directory>
+  $ python3 setup.py install --home=<directory>
 
 
   Note: The last two installation options may require modification of
@@ -96,7 +96,6 @@
     'Operating System :: POSIX :: Linux',
     'Operating System :: MacOS :: MacOS X',
     'Operating System :: Microsoft :: Windows',
-    'Programming Language :: Python',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3.6',
     'Programming Language :: Python :: 3.7',

tests/repository_data/README.md

@@ -13,7 +13,7 @@ Or by invoking `aggregate_tests.py` from the
 directory.
 
 ```
-$ python aggregate_tests.py
+$ python3 aggregate_tests.py
 ```
 
 Note: integration tests end in `_integration.py`.
@@ -22,13 +22,13 @@ If you wish to run a particular unit test, navigate to the tests directory and
 run that specific unit test.  For example:
 
 ```
-$ python test_updater.py
+$ python3 test_updater.py
 ```
 
 It it also possible to run the test cases of a unit test.  For instance:
 
 ```
-$ python -m unittest test_updater.TestMultiRepoUpdater.test_get_one_valid_targetinfo
+$ python3 -m unittest test_updater.TestMultiRepoUpdater.test_get_one_valid_targetinfo
 ```
 
 ## Setup

tests/test_tutorial.py

@@ -389,9 +389,6 @@ def test_tutorial(self):
 
     # TODO: Run subprocess to simulate the following bash instructions:
 
-    # $ cd "repository/"; python -m SimpleHTTPServer 8001
-    # If running Python 3:
-
     # $ cd "repository/"; python3 -m http.server 8001
     # We next retrieve targets from the TUF repository and save them to client/. The client.py script is available to download metadata and files from a specified repository. In a different command-line prompt . . .
 

tox.ini

@@ -14,17 +14,17 @@ skipsdist = true
 changedir = tests
 
 commands =
-    python --version
-    python -m coverage run aggregate_tests.py
-    python -m coverage report -m --fail-under 97 --omit "{toxinidir}/tuf/ngclient/*"
+    python3 --version
+    python3 -m coverage run aggregate_tests.py
+    python3 -m coverage report -m --fail-under 97 --omit "{toxinidir}/tuf/ngclient/*"
 
 deps =
     -r{toxinidir}/requirements-test.txt
     # Install TUF in editable mode, instead of tox default virtual environment
     # installation (see `skipsdist`), to get relative paths in coverage reports
     --editable {toxinidir}
 
-install_command = pip install {opts} {packages}
+install_command = python3 -m pip install {opts} {packages}
 
 # Develop test env to run tests against securesystemslib's master branch
 # Must to be invoked explicitly with, e.g. `tox -e with-sslib-master`
@@ -35,8 +35,8 @@ deps =
     --editable {toxinidir}
 
 commands =
-    python -m coverage run aggregate_tests.py
-    python -m coverage report -m
+    python3 -m coverage run aggregate_tests.py
+    python3 -m coverage report -m
 
 [testenv:lint]
 changedir = {toxinidir}