Pylint update

.github/workflows/build.yml

@@ -40,7 +40,7 @@ jobs:
         source actions-ci/install.sh
     - name: Pip install pylint, black, & Sphinx
       run: |
-        pip install --force-reinstall pylint==1.9.2 black==19.10b0 Sphinx sphinx-rtd-theme
+        pip install pylint black==19.10b0 Sphinx sphinx-rtd-theme
     - name: Library version
       run: git describe --dirty --always --tags
     - name: PyLint

adafruit_dymoscale.py

@@ -41,8 +41,8 @@
 from pulseio import PulseIn
 from micropython import const
 
-OUNCES = const(0x0B)   # data in weight is in ounces
-GRAMS = const(0x02)    # data in weight is in grams
+OUNCES = const(0x0B)  # data in weight is in ounces
+GRAMS = const(0x02)  # data in weight is in grams
 PULSE_WIDTH = 72.5
 
 __version__ = "0.0.0-auto.0"
@@ -51,13 +51,16 @@
 # pylint: disable=too-few-public-methods
 class ScaleReading:
     """Dymo Scale Data"""
-    units = None           # what units we're measuring
-    stable = None          # is the measurement stable?
-    weight = None          # the weight!
+
+    units = None  # what units we're measuring
+    stable = None  # is the measurement stable?
+    weight = None  # the weight!
+
 
 class DYMOScale:
     """Interface to a DYMO postal scale.
     """
+
     def __init__(self, data_pin, units_pin, timeout=1.0):
         """Sets up a DYMO postal scale.
         :param ~pulseio.PulseIn data_pin: The data pin from the Dymo scale.
@@ -84,9 +87,9 @@ def toggle_unit_button(self, switch_units=False):
         :param bool switch_units: Simulates pressing the units button.
         """
         toggle_times = 0
-        if switch_units: # press the button once
+        if switch_units:  # press the button once
             toggle_amt = 2
-        else: # toggle and preserve current unit state
+        else:  # toggle and preserve current unit state
             toggle_amt = 4
         while toggle_times < toggle_amt:
             self.units_pin.value ^= 1
@@ -103,34 +106,38 @@ def _read_pulse(self):
         self.dymo.resume()
         while len(self.dymo) < 35:
             if (time.monotonic() - timestamp) > self.timeout:
-                raise RuntimeError("Timed out waiting for data - is the scale turned on?")
+                raise RuntimeError(
+                    "Timed out waiting for data - is the scale turned on?"
+                )
         self.dymo.pause()
 
     def get_scale_data(self):
         """Reads a pulse of SPI data and analyzes the resulting data.
         """
         self._read_pulse()
-        bits = [0] * 96 # there are 12 bytes = 96 bits of data
-        bit_idx = 0 # we will count a bit at a time
-        bit_val = False # first pulses will be LOW
+        bits = [0] * 96  # there are 12 bytes = 96 bits of data
+        bit_idx = 0  # we will count a bit at a time
+        bit_val = False  # first pulses will be LOW
         for i in range(len(self.dymo)):
-            if self.dymo[i] == 65535: # check for the pulse between transmits
+            if self.dymo[i] == 65535:  # check for the pulse between transmits
                 break
-            num_bits = int(self.dymo[i] / PULSE_WIDTH + 0.5) # ~14KHz == ~7.5us per clock
+            num_bits = int(
+                self.dymo[i] / PULSE_WIDTH + 0.5
+            )  # ~14KHz == ~7.5us per clock
             bit = 0
             while bit < num_bits:
                 bits[bit_idx] = bit_val
                 bit_idx += 1
-                if bit_idx == 96: # we have read all the data we wanted
+                if bit_idx == 96:  # we have read all the data we wanted
                     break
                 bit += 1
             bit_val = not bit_val
-        data_bytes = [0] * 12 # alllocate data array
+        data_bytes = [0] * 12  # alllocate data array
         for byte_n in range(12):
             the_byte = 0
             for bit_n in range(8):
                 the_byte <<= 1
-                the_byte |= bits[byte_n*8 + bit_n]
+                the_byte |= bits[byte_n * 8 + bit_n]
             data_bytes[byte_n] = the_byte
         # do some very basic data checking
         if data_bytes[0] != 3 and data_bytes[0] != 2:

docs/conf.py

@@ -2,18 +2,19 @@
 
 import os
 import sys
-sys.path.insert(0, os.path.abspath('..'))
+
+sys.path.insert(0, os.path.abspath(".."))
 
 # -- General configuration ------------------------------------------------
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-    'sphinx.ext.napoleon',
-    'sphinx.ext.todo',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.napoleon",
+    "sphinx.ext.todo",
 ]
 
 # TODO: Please Read!
@@ -23,29 +24,32 @@
 autodoc_mock_imports = ["pulseio", "micropython"]
 
 
-intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}
+intersphinx_mapping = {
+    "python": ("https://docs.python.org/3.4", None),
+    "CircuitPython": ("https://circuitpython.readthedocs.io/en/latest/", None),
+}
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = u'Adafruit DymoScale Library'
-copyright = u'2019 ladyada'
-author = u'ladyada'
+project = "Adafruit DymoScale Library"
+copyright = "2019 ladyada"
+author = "ladyada"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'1.0'
+version = "1.0"
 # The full version, including alpha/beta/rc tags.
-release = u'1.0'
+release = "1.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -57,7 +61,7 @@
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This patterns also effect to html_static_path and html_extra_path
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', '.env', 'CODE_OF_CONDUCT.md']
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store", ".env", "CODE_OF_CONDUCT.md"]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
@@ -69,7 +73,7 @@
 add_function_parentheses = True
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = False
@@ -84,68 +88,76 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+on_rtd = os.environ.get("READTHEDOCS", None) == "True"
 
 if not on_rtd:  # only import and set the theme if we're building docs locally
     try:
         import sphinx_rtd_theme
-        html_theme = 'sphinx_rtd_theme'
-        html_theme_path = [sphinx_rtd_theme.get_html_theme_path(), '.']
+
+        html_theme = "sphinx_rtd_theme"
+        html_theme_path = [sphinx_rtd_theme.get_html_theme_path(), "."]
     except:
-        html_theme = 'default'
-        html_theme_path = ['.']
+        html_theme = "default"
+        html_theme_path = ["."]
 else:
-    html_theme_path = ['.']
+    html_theme_path = ["."]
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # The name of an image file (relative to this directory) to use as a favicon of
 # the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
 #
-html_favicon = '_static/favicon.ico'
+html_favicon = "_static/favicon.ico"
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'AdafruitDymoscaleLibrarydoc'
+htmlhelp_basename = "AdafruitDymoscaleLibrarydoc"
 
 # -- Options for LaTeX output ---------------------------------------------
 
 latex_elements = {
-     # The paper size ('letterpaper' or 'a4paper').
-     #
-     # 'papersize': 'letterpaper',
-
-     # The font size ('10pt', '11pt' or '12pt').
-     #
-     # 'pointsize': '10pt',
-
-     # Additional stuff for the LaTeX preamble.
-     #
-     # 'preamble': '',
-
-     # Latex figure (float) alignment
-     #
-     # 'figure_align': 'htbp',
+    # The paper size ('letterpaper' or 'a4paper').
+    #
+    # 'papersize': 'letterpaper',
+    # The font size ('10pt', '11pt' or '12pt').
+    #
+    # 'pointsize': '10pt',
+    # Additional stuff for the LaTeX preamble.
+    #
+    # 'preamble': '',
+    # Latex figure (float) alignment
+    #
+    # 'figure_align': 'htbp',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, 'AdafruitDymoScaleLibrary.tex', u'AdafruitDymoScale Library Documentation',
-     author, 'manual'),
+    (
+        master_doc,
+        "AdafruitDymoScaleLibrary.tex",
+        "AdafruitDymoScale Library Documentation",
+        author,
+        "manual",
+    ),
 ]
 
 # -- Options for manual page output ---------------------------------------
 
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    (master_doc, 'AdafruitDymoScalelibrary', u'Adafruit DymoScale Library Documentation',
-     [author], 1)
+    (
+        master_doc,
+        "AdafruitDymoScalelibrary",
+        "Adafruit DymoScale Library Documentation",
+        [author],
+        1,
+    )
 ]
 
 # -- Options for Texinfo output -------------------------------------------
@@ -154,7 +166,13 @@
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'AdafruitDymoScaleLibrary', u'Adafruit DymoScale Library Documentation',
-     author, 'AdafruitDymoScaleLibrary', 'One line description of project.',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "AdafruitDymoScaleLibrary",
+        "Adafruit DymoScale Library Documentation",
+        author,
+        "AdafruitDymoScaleLibrary",
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]

examples/dymoscale_simpletest.py

@@ -17,7 +17,7 @@
     print(text)
     # to avoid sleep mode, toggle the units pin every 2 mins.
     if (time.monotonic() - time_stamp) > 120:
-        print('toggling units button...')
+        print("toggling units button...")
         dymo.toggle_unit_button()
         # reset the time
         time_stamp = time.monotonic()

setup.py

@@ -6,58 +6,48 @@
 """
 
 from setuptools import setup, find_packages
+
 # To use a consistent encoding
 from codecs import open
 from os import path
 
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
-with open(path.join(here, 'README.rst'), encoding='utf-8') as f:
+with open(path.join(here, "README.rst"), encoding="utf-8") as f:
     long_description = f.read()
 
 setup(
-    name='adafruit-circuitpython-dymoscale',
-
+    name="adafruit-circuitpython-dymoscale",
     use_scm_version=True,
-    setup_requires=['setuptools_scm'],
-
-    description='CircuitPython interface for DYMO scales.',
+    setup_requires=["setuptools_scm"],
+    description="CircuitPython interface for DYMO scales.",
     long_description=long_description,
-    long_description_content_type='text/x-rst',
-
+    long_description_content_type="text/x-rst",
     # The project's main homepage.
-    url='https://github.com/adafruit/Adafruit_CircuitPython_DymoScale',
-
+    url="https://github.com/adafruit/Adafruit_CircuitPython_DymoScale",
     # Author details
-    author='Adafruit Industries',
-    author_email='circuitpython@adafruit.com',
-
-    install_requires=[
-        'Adafruit-Blinka'
-    ],
-
+    author="Adafruit Industries",
+    author_email="circuitpython@adafruit.com",
+    install_requires=["Adafruit-Blinka"],
     # Choose your license
-    license='MIT',
-
+    license="MIT",
     # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
     classifiers=[
-        'Development Status :: 3 - Alpha',
-        'Intended Audience :: Developers',
-        'Topic :: Software Development :: Libraries',
-        'Topic :: System :: Hardware',
-        'License :: OSI Approved :: MIT License',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
+        "Development Status :: 3 - Alpha",
+        "Intended Audience :: Developers",
+        "Topic :: Software Development :: Libraries",
+        "Topic :: System :: Hardware",
+        "License :: OSI Approved :: MIT License",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
     ],
-
     # What does your project relate to?
-    keywords='adafruit blinka circuitpython micropython dymoscale dymo scale',
-
+    keywords="adafruit blinka circuitpython micropython dymoscale dymo scale",
     # You can just specify the packages manually here if your project is
     # simple. Or you can use find_packages().
     # TODO: IF LIBRARY FILES ARE A PACKAGE FOLDER,
     #       CHANGE `py_modules=['...']` TO `packages=['...']`
-    py_modules=['adafruit_dymoscale'],
+    py_modules=["adafruit_dymoscale"],
 )