matplotlib · dstansby · Mar 23, 2020 · Mar 22, 2020
diff --git a/.flake8 b/.flake8
@@ -13,7 +13,7 @@ ignore =
     N801, N802, N803, N806, N812,
     # pydocstyle
     D100, D101, D102, D103, D104, D105, D106, D107,
-    D200, D202, D203, D204, D205, D207, D209, D212, D213,
+    D200, D202, D203, D204, D205, D207, D212, D213,
     D301
     D400, D401, D402, D403, D413,
 

diff --git a/lib/matplotlib/backends/backend_pdf.py b/lib/matplotlib/backends/backend_pdf.py
@@ -95,9 +95,12 @@
 
 
 def fill(strings, linelen=75):
-    """Make one string from sequence of strings, with whitespace
-    in between. The whitespace is chosen to form lines of at most
-    linelen characters, if possible."""
+    """
+    Make one string from sequence of strings, with whitespace in between.
+
+    The whitespace is chosen to form lines of at most *linelen* characters,
+    if possible.
+    """
     currpos = 0
     lasti = 0
     result = []
@@ -295,8 +298,7 @@ def pdfRepr(self):
 
 
 class Verbatim:
-    """Store verbatim PDF command content for later inclusion in the
-    stream."""
+    """Store verbatim PDF command content for later inclusion in the stream."""
     def __init__(self, x):
         self._x = x
 
@@ -322,9 +324,16 @@ def pdfRepr(self):
 
 
 def _paint_path(fill, stroke):
-    """Return the PDF operator to paint a path in the following way:
-    fill:   fill the path with the fill color
-    stroke: stroke the outline of the path with the line color"""
+    """
+    Return the PDF operator to paint a path.
+
+    Parameters
+    ----------
+    fill: bool
+        Fill the path with the fill color.
+    stroke: bool
+        Stroke the outline of the path with the line color.
+    """
     if stroke:
         if fill:
             return Op.fill_stroke
@@ -339,7 +348,8 @@ def _paint_path(fill, stroke):
 
 
 class Stream:
-    """PDF stream object.
+    """
+    PDF stream object.
 
     This has no pdfRepr method. Instead, call begin(), then output the
     contents of the stream by calling write(), and finally call end().

diff --git a/lib/matplotlib/dviread.py b/lib/matplotlib/dviread.py
@@ -69,45 +69,55 @@
 # argument bytes in this delta.
 
 def _arg_raw(dvi, delta):
-    """Return *delta* without reading anything more from the dvi file"""
+    """Return *delta* without reading anything more from the dvi file."""
     return delta
 
 
 def _arg(bytes, signed, dvi, _):
-    """Read *bytes* bytes, returning the bytes interpreted as a
-    signed integer if *signed* is true, unsigned otherwise."""
+    """
+    Read *bytes* bytes, returning the bytes interpreted as a signed integer
+    if *signed* is true, unsigned otherwise.
+    """
     return dvi._arg(bytes, signed)
 
 
 def _arg_slen(dvi, delta):
-    """Signed, length *delta*
+    """
+    Signed, length *delta*
 
-    Read *delta* bytes, returning None if *delta* is zero, and
-    the bytes interpreted as a signed integer otherwise."""
+    Read *delta* bytes, returning None if *delta* is zero, and the bytes
+    interpreted as a signed integer otherwise.
+    """
     if delta == 0:
         return None
     return dvi._arg(delta, True)
 
 
 def _arg_slen1(dvi, delta):
-    """Signed, length *delta*+1
+    """
+    Signed, length *delta*+1
 
-    Read *delta*+1 bytes, returning the bytes interpreted as signed."""
+    Read *delta*+1 bytes, returning the bytes interpreted as signed.
+    """
     return dvi._arg(delta+1, True)
 
 
 def _arg_ulen1(dvi, delta):
-    """Unsigned length *delta*+1
+    """
+    Unsigned length *delta*+1
 
-    Read *delta*+1 bytes, returning the bytes interpreted as unsigned."""
+    Read *delta*+1 bytes, returning the bytes interpreted as unsigned.
+    """
     return dvi._arg(delta+1, False)
 
 
 def _arg_olen1(dvi, delta):
-    """Optionally signed, length *delta*+1
+    """
+    Optionally signed, length *delta*+1
 
     Read *delta*+1 bytes, returning the bytes interpreted as
-    unsigned integer for 0<=*delta*<3 and signed if *delta*==3."""
+    unsigned integer for 0<=*delta*<3 and signed if *delta*==3.
+    """
     return dvi._arg(delta + 1, delta == 3)
 
 
@@ -122,7 +132,8 @@ def _arg_olen1(dvi, delta):
 
 
 def _dispatch(table, min, max=None, state=None, args=('raw',)):
-    """Decorator for dispatch by opcode. Sets the values in *table*
+    """
+    Decorator for dispatch by opcode. Sets the values in *table*
     from *min* to *max* to this method, adds a check that the Dvi state
     matches *state* if not None, reads arguments from the file according
     to *args*.

diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py
@@ -592,8 +592,10 @@ def test_light_source_topo_surface():
 
 
 def test_light_source_shading_default():
-    """Array comparison test for the default "hsv" blend mode. Ensure the
-    default result doesn't change without warning."""
+    """
+    Array comparison test for the default "hsv" blend mode. Ensure the
+    default result doesn't change without warning.
+    """
     y, x = np.mgrid[-1.2:1.2:8j, -1.2:1.2:8j]
     z = 10 * np.cos(x**2 + y**2)
 
@@ -647,8 +649,10 @@ def test_light_source_shading_default():
 # additional elements being masked when calculating the gradient thus
 # the output is different with earlier numpy versions.
 def test_light_source_masked_shading():
-    """Array comparison test for a surface with a masked portion. Ensures that
-    we don't wind up with "fringes" of odd colors around masked regions."""
+    """
+    Array comparison test for a surface with a masked portion. Ensures that
+    we don't wind up with "fringes" of odd colors around masked regions.
+    """
     y, x = np.mgrid[-1.2:1.2:8j, -1.2:1.2:8j]
     z = 10 * np.cos(x**2 + y**2)
 
@@ -701,8 +705,10 @@ def test_light_source_masked_shading():
 
 
 def test_light_source_hillshading():
-    """Compare the current hillshading method against one that should be
-    mathematically equivalent. Illuminates a cone from a range of angles."""
+    """
+    Compare the current hillshading method against one that should be
+    mathematically equivalent. Illuminates a cone from a range of angles.
+    """
 
     def alternative_hillshade(azimuth, elev, z):
         illum = _sph2cart(*_azimuth2math(azimuth, elev))
@@ -730,20 +736,25 @@ def alternative_hillshade(azimuth, elev, z):
 
 
 def test_light_source_planar_hillshading():
-    """Ensure that the illumination intensity is correct for planar
-    surfaces."""
+    """
+    Ensure that the illumination intensity is correct for planar surfaces.
+    """
 
     def plane(azimuth, elevation, x, y):
-        """Create a plane whose normal vector is at the given azimuth and
-        elevation."""
+        """
+        Create a plane whose normal vector is at the given azimuth and
+        elevation.
+        """
         theta, phi = _azimuth2math(azimuth, elevation)
         a, b, c = _sph2cart(theta, phi)
         z = -(a*x + b*y) / c
         return z
 
     def angled_plane(azimuth, elevation, angle, x, y):
-        """Create a plane whose normal vector is at an angle from the given
-        azimuth and elevation."""
+        """
+        Create a plane whose normal vector is at an angle from the given
+        azimuth and elevation.
+        """
         elevation = elevation + angle
         if elevation > 90:
             azimuth = (azimuth + 180) % 360
@@ -775,8 +786,10 @@ def _sph2cart(theta, phi):
 
 
 def _azimuth2math(azimuth, elevation):
-    """Converts from clockwise-from-north and up-from-horizontal to
-    mathematical conventions."""
+    """
+    Convert from clockwise-from-north and up-from-horizontal to mathematical
+    conventions.
+    """
     theta = np.radians((90 - azimuth) % 360)
     phi = np.radians(90 - elevation)
     return theta, phi
@@ -795,8 +808,10 @@ def test_pandas_iterable(pd):
 
 @pytest.mark.parametrize('name', sorted(cm.cmap_d))
 def test_colormap_reversing(name):
-    """Check the generated _lut data of a colormap and corresponding
-    reversed colormap if they are almost the same."""
+    """
+    Check the generated _lut data of a colormap and corresponding reversed
+    colormap if they are almost the same.
+    """
     cmap = plt.get_cmap(name)
     cmap_r = cmap.reversed()
     if not cmap_r._isinit:

diff --git a/lib/matplotlib/tests/test_mlab.py b/lib/matplotlib/tests/test_mlab.py
@@ -1561,44 +1561,38 @@ def test_single_dataset_element(self):
             mlab.GaussianKDE([42])
 
     def test_silverman_multidim_dataset(self):
-        """Use a multi-dimensional array as the dataset and test silverman's
-        output"""
+        """Test silverman's for a multi-dimensional array."""
         x1 = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
         with pytest.raises(np.linalg.LinAlgError):
             mlab.GaussianKDE(x1, "silverman")
 
     def test_silverman_singledim_dataset(self):
-        """Use a single dimension list as the dataset and test silverman's
-        output."""
+        """Test silverman's output for a single dimension list."""
         x1 = np.array([-7, -5, 1, 4, 5])
         mygauss = mlab.GaussianKDE(x1, "silverman")
         y_expected = 0.76770389927475502
         assert_almost_equal(mygauss.covariance_factor(), y_expected, 7)
 
     def test_scott_multidim_dataset(self):
-        """Use a multi-dimensional array as the dataset and test scott's output
-        """
+        """Test scott's output for a multi-dimensional array."""
         x1 = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
         with pytest.raises(np.linalg.LinAlgError):
             mlab.GaussianKDE(x1, "scott")
 
     def test_scott_singledim_dataset(self):
-        """Use a single-dimensional array as the dataset and test scott's
-        output"""
+        """Test scott's output a single-dimensional array."""
         x1 = np.array([-7, -5, 1, 4, 5])
         mygauss = mlab.GaussianKDE(x1, "scott")
         y_expected = 0.72477966367769553
         assert_almost_equal(mygauss.covariance_factor(), y_expected, 7)
 
     def test_scalar_empty_dataset(self):
-        """Use an empty array as the dataset and test the scalar's cov factor
-        """
+        """Test the scalar's cov factor for an empty array."""
         with pytest.raises(ValueError):
             mlab.GaussianKDE([], bw_method=5)
 
     def test_scalar_covariance_dataset(self):
-        """Use a dataset and test a scalar's cov factor
-        """
+        """Test a scalar's cov factor."""
         np.random.seed(8765678)
         n_basesample = 50
         multidim_data = [np.random.randn(n_basesample) for i in range(5)]
@@ -1607,8 +1601,7 @@ def test_scalar_covariance_dataset(self):
         assert kde.covariance_factor() == 0.5
 
     def test_callable_covariance_dataset(self):
-        """Use a multi-dimensional array as the dataset and test the callable's
-        cov factor"""
+        """Test the callable's cov factor for a multi-dimensional array."""
         np.random.seed(8765678)
         n_basesample = 50
         multidim_data = [np.random.randn(n_basesample) for i in range(5)]
@@ -1619,8 +1612,7 @@ def callable_fun(x):
         assert kde.covariance_factor() == 0.55
 
     def test_callable_singledim_dataset(self):
-        """Use a single-dimensional array as the dataset and test the
-        callable's cov factor"""
+        """Test the callable's cov factor for a single-dimensional array."""
         np.random.seed(8765678)
         n_basesample = 50
         multidim_data = np.random.randn(n_basesample)