Add licence headers and format imports

Author: glentner

docs/source/conf.py

@@ -1,4 +1,5 @@
-# -*- coding: utf-8 -*-
+# SPDX-FileCopyrightText: 2019-2021 Python201 Contributors
+# SPDX-License-Identifier: MIT
 #
 # Configuration file for the Sphinx documentation builder.
 #

python201/__init__.py

@@ -1 +1,8 @@
+# SPDX-FileCopyrightText: 2019-2021 Python201 Contributors
+# SPDX-License-Identifier: MIT
+
+"""python201 package initialization."""
+
+
+# internal libs
 from .core import logging  # force initialization

python201/algorithms.py

@@ -1,8 +1,21 @@
-import sys
+# SPDX-FileCopyrightText: 2019-2021 Python201 Contributors
+# SPDX-License-Identifier: MIT
+
+"""Numerical algorithms."""
+
+
+# type annotations
 from typing import List
+
+# standard libs
+import sys
 from argparse import ArgumentParser, FileType
 
+# internal libs
 from .core.logging import getLogger, initialize_logging
+
+
+# module level logger
 log = getLogger(__name__)
 
 

python201/core/__init__.py

@@ -0,0 +1,4 @@
+# SPDX-FileCopyrightText: 2019-2021 Python201 Contributors
+# SPDX-License-Identifier: MIT
+
+"""Core modules for python201."""

python201/core/logging.py

@@ -1,3 +1,10 @@
+# SPDX-FileCopyrightText: 2019-2021 Python201 Contributors
+# SPDX-License-Identifier: MIT
+
+"""Core logging configuration."""
+
+
+# standard libs
 from socket import gethostname
 from logging import (getLogger, NullHandler, StreamHandler, Formatter,
                      DEBUG, INFO, WARNING, ERROR, CRITICAL)

tests/test_algorithms.py

@@ -1,7 +1,14 @@
+# SPDX-FileCopyrightText: 2019-2021 Python201 Contributors
+# SPDX-License-Identifier: MIT
 
+"""Unit tests for python201.algorithms."""
+
+
+# external libs
 from hypothesis.strategies import lists, integers
 from hypothesis import given
 
+# internal libs
 from python201.algorithms import cumulative_product