Re-enabled PEP8 test, closing matplotlib#2443.

Author: pelson

lib/matplotlib/axes/_axes.py

@@ -558,17 +558,18 @@ def annotate(self, *args, **kwargs):
             "figure points", "figure pixels", "figure fraction", "axes
             points", .... See `matplotlib.text.Annotation` for more details.
 
-        textcoords : string, optional, default: None
+        textcoords : string, optional
             string that indicates what type of coordinates `text` is. Examples:
             "figure points", "figure pixels", "figure fraction", "axes
             points", .... See `matplotlib.text.Annotation` for more details.
+            Default is None.
 
-        arrowprops : `matplotlib.lines.Line2D` properties, optional, default: None
+        arrowprops : `matplotlib.lines.Line2D` properties, optional
             Dictionnary of line properties for the arrow that connects the
             annotation to the point. If the dictionnary has a key
             `arrowstyle`, a `FancyArrowPatch` instance is created and drawn.
             See `matplotlib.text.Annotation` for more details on valid
-            options.
+            options. Default is None.
 
         Returns
         -------
@@ -3643,7 +3644,7 @@ def hexbin(self, x, y, C=None, gridsize=100, bins=None,
         # Transform accum if needed
         if bins == 'log':
             accum = np.log10(accum + 1)
-        elif bins != None:
+        elif bins is not None:
             if not iterable(bins):
                 minimum, maximum = min(accum), max(accum)
                 bins -= 1  # one less edge than bins
@@ -5119,7 +5120,8 @@ def hist(self, x, bins=10, range=None, normed=False, weights=None,
 
         Returns
         -------
-        tuple : (n, bins, patches) or ([n0, n1, ...], bins, [patches0, patches1,...])
+        tuple : ``(n, bins, patches)`` or \
+                ``([n0, n1, ...], bins, [patches0, patches1,...])``
 
         Other Parameters
         ----------------
@@ -5246,7 +5248,7 @@ def hist(self, x, bins=10, range=None, normed=False, weights=None,
             # this will automatically overwrite bins,
             # so that each histogram uses the same bins
             m, bins = np.histogram(x[i], bins, weights=w[i], **hist_kwargs)
-            m = m.astype(float) # causes problems later if it's an int
+            m = m.astype(float)  # causes problems later if it's an int
             if mlast is None:
                 mlast = np.zeros(len(bins)-1, m.dtype)
             if normed and not stacked:
@@ -5417,15 +5419,15 @@ def hist(self, x, bins=10, range=None, normed=False, weights=None,
                 xmin0 = max(_saved_bounds[0]*0.9, minimum)
                 xmax = self.dataLim.intervalx[1]
                 for m in n:
-                    xmin = np.amin(m[m != 0]) # filter out the 0 height bins
+                    xmin = np.amin(m[m != 0])  # filter out the 0 height bins
                 xmin = max(xmin*0.9, minimum)
                 xmin = min(xmin0, xmin)
                 self.dataLim.intervalx = (xmin, xmax)
             elif orientation == 'vertical':
                 ymin0 = max(_saved_bounds[1]*0.9, minimum)
                 ymax = self.dataLim.intervaly[1]
                 for m in n:
-                    ymin = np.amin(m[m != 0]) # filter out the 0 height bins
+                    ymin = np.amin(m[m != 0])  # filter out the 0 height bins
                 ymin = max(ymin*0.9, minimum)
                 ymin = min(ymin0, ymin)
                 self.dataLim.intervaly = (ymin, ymax)

lib/matplotlib/axes/_base.py

@@ -698,8 +698,6 @@ def get_yaxis_text2_transform(self, pad_points):
                                               self.figure.dpi_scale_trans),
                 "center", "left")
 
-
-
     def _update_transScale(self):
         self.transScale.set(
             mtransforms.blended_transform_factory(
@@ -1090,7 +1088,8 @@ def set_anchor(self, anchor):
           =====  ============
 
         """
-        if anchor in list(six.iterkeys(mtransforms.Bbox.coefs)) or len(anchor) == 2:
+        if (anchor in list(six.iterkeys(mtransforms.Bbox.coefs)) or
+                len(anchor) == 2):
             self._anchor = anchor
         else:
             raise ValueError('argument must be among %s' %
@@ -1593,9 +1592,9 @@ def add_container(self, container):
 
     def relim(self, visible_only=False):
         """
-        Recompute the data limits based on current artists. If you want to exclude
-        invisible artists from the calculation, set
-        `visible_only=True`
+        Recompute the data limits based on current artists. If you want to
+        exclude invisible artists from the calculation, set
+        ``visible_only=True``
 
         At present, :class:`~matplotlib.collections.Collection`
         instances are not supported.
@@ -2503,7 +2502,8 @@ def set_xlim(self, left=None, right=None, emit=True, auto=False, **kw):
         if 'xmax' in kw:
             right = kw.pop('xmax')
         if kw:
-            raise ValueError("unrecognized kwargs: %s" % list(six.iterkeys(kw)))
+            raise ValueError("unrecognized kwargs: %s" %
+                             list(six.iterkeys(kw)))
 
         if right is None and iterable(left):
             left, right = left
@@ -2732,7 +2732,8 @@ def set_ylim(self, bottom=None, top=None, emit=True, auto=False, **kw):
         if 'ymax' in kw:
             top = kw.pop('ymax')
         if kw:
-            raise ValueError("unrecognized kwargs: %s" % list(six.iterkeys(kw)))
+            raise ValueError("unrecognized kwargs: %s" %
+                             list(six.iterkeys(kw)))
 
         if top is None and iterable(bottom):
             bottom, top = bottom

lib/matplotlib/backends/backend_qt4.py

@@ -272,7 +272,7 @@ def mouseDoubleClickEvent(self, event):
             FigureCanvasBase.button_press_event(self, x, y,
                                                 button, dblclick=True)
         if DEBUG:
-            print ('button doubleclicked:', event.button())
+            print('button doubleclicked:', event.button())
 
     def mouseMoveEvent(self, event):
         x = event.x()
@@ -720,8 +720,8 @@ def save_figure(self, *args):
                 matplotlib.rcParams['savefig.directory'] = startpath
             else:
                 # save dir for next time
-                matplotlib.rcParams['savefig.directory'] = os.path.dirname(
-                                                               six.text_type(fname))
+                savefig_dir = os.path.dirname(six.text_type(fname))
+                matplotlib.rcParams['savefig.directory'] = savefig_dir
             try:
                 self.canvas.print_figure(six.text_type(fname))
             except Exception as e:

lib/matplotlib/backends/backend_webagg_core.py

@@ -10,7 +10,8 @@
 # - `backend_webagg.py` contains a concrete implementation of a basic
 #   application, implemented with tornado.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
 
 import six
 
@@ -283,8 +284,9 @@ def get_javascript(cls, stream=None):
             json.dumps(toolitems)))
 
         extensions = []
-        for filetype, ext in sorted(
-                FigureCanvasWebAggCore.get_supported_filetypes_grouped().items()):
+        for filetype, ext in sorted(FigureCanvasWebAggCore.
+                                    get_supported_filetypes_grouped().
+                                    items()):
             extensions.append(ext[0])
         output.write("mpl.extensions = {0};\n\n".format(
             json.dumps(extensions)))

lib/matplotlib/cm.py

@@ -75,11 +75,8 @@ def _generate_cmap(name, lutsize):
 
 LUTSIZE = mpl.rcParams['image.lut']
 
-_cmapnames = list(six.iterkeys(datad))  # need this list because datad is changed in loop
-
 # Generate the reversed specifications ...
-
-for cmapname in _cmapnames:
+for cmapname in list(six.iterkeys(datad)):
     spec = datad[cmapname]
     spec_reversed = _reverse_cmap_spec(spec)
     datad[cmapname + '_r'] = spec_reversed

lib/matplotlib/dates.py

@@ -820,8 +820,8 @@ def __init__(self, tz=None, minticks=5, maxticks=None,
                             5000, 10000, 20000, 50000, 100000, 200000, 500000,
                             1000000]}
         self._byranges = [None, list(xrange(1, 13)), list(xrange(1, 32)),
-                          list(xrange(0, 24)), list(xrange(0, 60)), list(xrange(0, 60)),
-                          None]
+                          list(xrange(0, 24)), list(xrange(0, 60)),
+                          list(xrange(0, 60)), None]
 
     def __call__(self):
         'Return the locations of the ticks'

lib/matplotlib/figure.py

@@ -1415,7 +1415,8 @@ def savefig(self, *args, **kwargs):
 
         kwargs.setdefault('dpi', rcParams['savefig.dpi'])
         frameon = kwargs.pop('frameon', rcParams['savefig.frameon'])
-        transparent = kwargs.pop('transparent', rcParams['savefig.transparent'])
+        transparent = kwargs.pop('transparent',
+                                 rcParams['savefig.transparent'])
 
         if transparent:
             kwargs.setdefault('facecolor', 'none')

lib/matplotlib/tests/__init__.py

@@ -28,7 +28,7 @@ def setup():
                 "Could not set locale to English/United States. "
                 "Some date-related tests may fail")
 
-    use('Agg', warn=False) # use Agg backend for these tests
+    use('Agg', warn=False)  # use Agg backend for these tests
 
     # These settings *must* be hardcoded for running the comparison
     # tests and are not necessarily the default values as specified in

lib/matplotlib/tests/test_backend_pdf.py

@@ -12,10 +12,12 @@
 
 from matplotlib import cm, rcParams
 from matplotlib import pyplot as plt
-from matplotlib.testing.decorators import image_comparison, knownfailureif, cleanup
+from matplotlib.testing.decorators import (image_comparison, knownfailureif,
+                                           cleanup)
 
 if 'TRAVIS' not in os.environ:
-    @image_comparison(baseline_images=['pdf_use14corefonts'], extensions=['pdf'])
+    @image_comparison(baseline_images=['pdf_use14corefonts'],
+                      extensions=['pdf'])
     def test_use14corefonts():
         rcParams['pdf.use14corefonts'] = True
         rcParams['font.family'] = 'sans-serif'

lib/matplotlib/tests/test_backend_pgf.py

@@ -74,7 +74,8 @@ def create_figure():
     plt.figure()
     x = np.linspace(0, 1, 15)
     plt.plot(x, x ** 2, "b-")
-    plt.fill_between([0., .4], [.4, 0.], hatch='//', facecolor="lightgray", edgecolor="red")
+    plt.fill_between([0., .4], [.4, 0.], hatch='//', facecolor="lightgray",
+                     edgecolor="red")
     plt.plot(x, 1 - x**2, "g>")
     plt.plot([0.9], [0.5], "ro", markersize=3)
     plt.text(0.9, 0.5, 'unicode (ü, °, µ) and math ($\\mu_i = x_i^2$)',