Ran black, updated to pylint 2.x

.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 --force-reinstall pylint black==19.10b0 Sphinx sphinx-rtd-theme
     - name: Library version
       run: git describe --dirty --always --tags
     - name: PyLint

adafruit_tlc5947.py

@@ -48,10 +48,11 @@
 # Globally disable protected access.  Ppylint can't figure out the
 # context for using internal decorate classes below.  In these cases protectected
 # access is by design for the internal class.
-#pylint: disable=protected-access
+# pylint: disable=protected-access
 
 _CHANNELS = 24
-_STOREBYTES = _CHANNELS + _CHANNELS//2
+_STOREBYTES = _CHANNELS + _CHANNELS // 2
+
 
 class TLC5947:
     """TLC5947 12-bit 24 channel LED PWM driver.  Create an instance of this by
@@ -105,7 +106,9 @@ def duty_cycle(self):
         @duty_cycle.setter
         def duty_cycle(self, val):
             if val < 0 or val > 65535:
-                raise ValueError("PWM intensity {0} outside supported range [0;65535]".format(val))
+                raise ValueError(
+                    "PWM intensity {0} outside supported range [0;65535]".format(val)
+                )
             # Convert to 12-bit value (quantization error will occur!).
             val = (val >> 4) & 0xFFF
             self._tlc5947._set_gs_value(self._channel, val)
@@ -121,16 +124,18 @@ def frequency(self):
         # pylint bug misidentifies the following as a regular function instead
         # of the associated setter: https://github.com/PyCQA/pylint/issues/870
         # Must disable a few checks to make pylint happy (ugh).
-        #pylint: disable=no-self-use,unused-argument
+        # pylint: disable=no-self-use,unused-argument
         @frequency.setter
         def frequency(self, val):
-            raise RuntimeError('Cannot set TLC5947 PWM frequency!')
-        #pylint: enable=no-self-use,unused-argument
+            raise RuntimeError("Cannot set TLC5947 PWM frequency!")
 
+        # pylint: enable=no-self-use,unused-argument
 
     def __init__(self, spi, latch, *, auto_write=True, num_drivers=1):
         if num_drivers < 1:
-            raise ValueError("Need at least one driver; {0} is not supported.".format(num_drivers))
+            raise ValueError(
+                "Need at least one driver; {0} is not supported.".format(num_drivers)
+            )
         self._spi = spi
         self._latch = latch
         self._latch.switch_to_output(value=False)
@@ -157,7 +162,7 @@ def write(self):
             # First ensure latch is low.
             self._latch.value = False
             # Write out the bits.
-            self._spi.write(self._shift_reg, start=0, end=_STOREBYTES*self._n +1)
+            self._spi.write(self._shift_reg, start=0, end=_STOREBYTES * self._n + 1)
             # Then toggle latch high and low to set the value.
             self._latch.value = True
             self._latch.value = False
@@ -170,7 +175,8 @@ def _get_gs_value(self, channel):
         # Disable should be removed when refactor can be tested
         if channel < 0 or channel >= _CHANNELS * self._n:
             raise ValueError(
-                "Channel {0} not available with {1} board(s).".format(channel, self._n))
+                "Channel {0} not available with {1} board(s).".format(channel, self._n)
+            )
         # Invert channel position as the last channel needs to be written first.
         # I.e. is in the first position of the shift registr.
         channel = _CHANNELS * self._n - 1 - channel
@@ -182,7 +188,7 @@ def _get_gs_value(self, channel):
         start_offset = bit_offset % 8
         # Grab the high and low bytes.
         high_byte = self._shift_reg[byte_start]
-        low_byte = self._shift_reg[byte_start+1]
+        low_byte = self._shift_reg[byte_start + 1]
         if start_offset == 4:
             # Value starts in the lower 4 bits of the high bit so you can
             # just concat high with low byte and return the 12-bit value.
@@ -192,14 +198,17 @@ def _get_gs_value(self, channel):
             # 4 bits of low byte.  Shift low byte and concat values.
             return ((high_byte << 4) | (low_byte >> 4)) & 0xFFF
         else:
-            raise RuntimeError('Unsupported bit offset!')
+            raise RuntimeError("Unsupported bit offset!")
 
     def _set_gs_value(self, channel, val):
         if channel < 0 or channel >= _CHANNELS * self._n:
             raise ValueError(
-                "Channel {0} not available with {1} board(s).".format(channel, self._n))
+                "Channel {0} not available with {1} board(s).".format(channel, self._n)
+            )
         if val < 0 or val > 4095:
-            raise ValueError("PWM intensity {0} outside supported range [0;4095]".format(val))
+            raise ValueError(
+                "PWM intensity {0} outside supported range [0;4095]".format(val)
+            )
 
         # Invert channel position as the last channel needs to be written first.
         # I.e. is in the first position of the shift registr.
@@ -212,11 +221,11 @@ def _set_gs_value(self, channel, val):
         start_offset = bit_offset % 8
         # Grab the high and low bytes.
         high_byte = self._shift_reg[byte_start]
-        low_byte = self._shift_reg[byte_start+1]
+        low_byte = self._shift_reg[byte_start + 1]
         if start_offset == 4:
             # Value starts in the lower 4 bits of the high bit.
             high_byte &= 0b11110000
-            high_byte |= (val >> 8)
+            high_byte |= val >> 8
             low_byte = val & 0xFF
         elif start_offset == 0:
             # Value starts in the entire high byte and spills into upper
@@ -225,9 +234,9 @@ def _set_gs_value(self, channel, val):
             low_byte &= 0b00001111
             low_byte |= (val << 4) & 0xFF
         else:
-            raise RuntimeError('Unsupported bit offset!')
+            raise RuntimeError("Unsupported bit offset!")
         self._shift_reg[byte_start] = high_byte
-        self._shift_reg[byte_start+1] = low_byte
+        self._shift_reg[byte_start + 1] = low_byte
         # Write the updated shift register values if required.
         if self.auto_write:
             self.write()
@@ -256,7 +265,7 @@ def __getitem__(self, key):
         """
         if key < 0:  # allow reverse adressing with negative index
             key = key + _CHANNELS * self._n
-        return self._get_gs_value(key)    # does parameter checking
+        return self._get_gs_value(key)  # does parameter checking
 
     def __setitem__(self, key, val):
         """Set the 12-bit PWM value (0-4095) for the specified channel (0-max).
@@ -267,4 +276,4 @@ def __setitem__(self, key, val):
         """
         if key < 0:  # allow reverse adressing with negative index
             key = key + _CHANNELS * self._n
-        self._set_gs_value(key, val)    # does parameter checking
+        self._set_gs_value(key, val)  # does parameter checking

docs/conf.py

@@ -2,47 +2,51 @@
 
 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.viewcode',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.viewcode",
 ]
 
 # Uncomment the below if you use native CircuitPython modules such as
 # digitalio, micropython and busio. List the modules you use. Without it, the
 # autodoc module docs will fail to generate with a warning.
 # autodoc_mock_imports = ["digitalio", "busio"]
 
-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 TLC5947 Library'
-copyright = u'2017 Tony DiCola'
-author = u'Tony DiCola'
+project = u"Adafruit TLC5947 Library"
+copyright = u"2017 Tony DiCola"
+author = u"Tony DiCola"
 
 # 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 = u"1.0"
 # The full version, including alpha/beta/rc tags.
-release = u'1.0'
+release = u"1.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -54,7 +58,7 @@
 # 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.
@@ -66,7 +70,7 @@
 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
@@ -80,68 +84,76 @@
 # 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 = 'AdafruitTlc5947Librarydoc'
+htmlhelp_basename = "AdafruitTlc5947Librarydoc"
 
 # -- 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, 'AdafruitTLC5947Library.tex', u'AdafruitTLC5947 Library Documentation',
-     author, 'manual'),
+    (
+        master_doc,
+        "AdafruitTLC5947Library.tex",
+        u"AdafruitTLC5947 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, 'AdafruitTLC5947library', u'Adafruit TLC5947 Library Documentation',
-     [author], 1)
+    (
+        master_doc,
+        "AdafruitTLC5947library",
+        u"Adafruit TLC5947 Library Documentation",
+        [author],
+        1,
+    )
 ]
 
 # -- Options for Texinfo output -------------------------------------------
@@ -150,7 +162,13 @@
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'AdafruitTLC5947Library', u'Adafruit TLC5947 Library Documentation',
-     author, 'AdafruitTLC5947Library', 'One line description of project.',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "AdafruitTLC5947Library",
+        u"Adafruit TLC5947 Library Documentation",
+        author,
+        "AdafruitTLC5947Library",
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]