Merge pull request matplotlib#3513 from thisch/examples_whitespace_fixes

PEP8 : fix blank-line violations in examples

Author: tacaswell

examples/color/color_cycle_demo.py

@@ -30,5 +30,3 @@
 # Tweak spacing between subplots to prevent labels from overlapping
 plt.subplots_adjust(hspace=0.3)
 plt.show()
-
-

examples/color/colormaps_reference.py

@@ -59,6 +59,7 @@
 gradient = np.linspace(0, 1, 256)
 gradient = np.vstack((gradient, gradient))
 
+
 def plot_color_gradients(cmap_category, cmap_list):
     fig, axes = plt.subplots(nrows=nrows)
     fig.subplots_adjust(top=0.95, bottom=0.01, left=0.2, right=0.99)

examples/event_handling/close_event.py

@@ -1,6 +1,7 @@
 from __future__ import print_function
 import matplotlib.pyplot as plt
 
+
 def handle_close(evt):
     print('Closed Figure!')
 

examples/event_handling/data_browser.py

@@ -7,6 +7,7 @@ class PointBrowser:
     generated the point will be shown in the lower axes.  Use the 'n'
     and 'p' keys to browse through the next and previous points
     """
+
     def __init__(self):
         self.lastind = 0
 
@@ -21,7 +22,6 @@ def onpress(self, event):
         if event.key=='n': inc = 1
         else:  inc = -1
 
-
         self.lastind += inc
         self.lastind = np.clip(self.lastind, 0, len(xs)-1)
         self.update()
@@ -37,7 +37,6 @@ def onpick(self, event):
        x = event.mouseevent.xdata
        y = event.mouseevent.ydata
 
-
        distances = np.hypot(x-xs[event.ind], y-ys[event.ind])
        indmin = distances.argmin()
        dataind = event.ind[indmin]
@@ -80,4 +79,3 @@ def update(self):
     fig.canvas.mpl_connect('key_press_event', browser.onpress)
 
     plt.show()
-

examples/event_handling/figure_axes_enter_leave.py

@@ -5,21 +5,25 @@
 from __future__ import print_function
 import matplotlib.pyplot as plt
 
+
 def enter_axes(event):
     print('enter_axes', event.inaxes)
     event.inaxes.patch.set_facecolor('yellow')
     event.canvas.draw()
 
+
 def leave_axes(event):
     print('leave_axes', event.inaxes)
     event.inaxes.patch.set_facecolor('white')
     event.canvas.draw()
 
+
 def enter_figure(event):
     print('enter_figure', event.canvas.figure)
     event.canvas.figure.patch.set_facecolor('red')
     event.canvas.draw()
 
+
 def leave_figure(event):
     print('leave_figure', event.canvas.figure)
     event.canvas.figure.patch.set_facecolor('grey')
@@ -42,5 +46,3 @@ def leave_figure(event):
 fig2.canvas.mpl_connect('axes_leave_event', leave_axes)
 
 plt.show()
-
-

examples/event_handling/idle_and_timeout.py

@@ -16,6 +16,8 @@
 line2, = ax.plot(y2)
 
 N = 100
+
+
 def on_idle(event):
     on_idle.count +=1
     print('idle', on_idle.count)
@@ -31,5 +33,3 @@ def on_idle(event):
 fig.canvas.mpl_connect('idle_event', on_idle)
 
 plt.show()
-
-

examples/event_handling/lasso_demo.py

@@ -15,9 +15,11 @@
 from numpy import nonzero
 from numpy.random import rand
 
+
 class Datum(object):
     colorin = colorConverter.to_rgba('red')
     colorout = colorConverter.to_rgba('blue')
+
     def __init__(self, x, y, include=False):
         self.x = x
         self.y = y

examples/event_handling/looking_glass.py

@@ -11,6 +11,7 @@
 ax.plot(x, y, alpha=0.2)
 line, = ax.plot(x, y, alpha=1.0, clip_path=circ)
 
+
 class EventHandler:
    def __init__(self):
        fig.canvas.mpl_connect('button_press_event', self.onpress)

examples/event_handling/path_editor.py

@@ -60,7 +60,6 @@ def __init__(self, pathpatch):
         canvas.mpl_connect('motion_notify_event', self.motion_notify_callback)
         self.canvas = canvas
 
-
     def draw_callback(self, event):
         self.background = self.canvas.copy_from_bbox(self.ax.bbox)
         self.ax.draw_artist(self.pathpatch)
@@ -74,7 +73,6 @@ def pathpatch_changed(self, pathpatch):
         plt.Artist.update_from(self.line, pathpatch)
         self.line.set_visible(vis)  # don't use the pathpatch visibility state
 
-
     def get_ind_under_point(self, event):
         'get the index of the vertex under point if within epsilon tolerance'
 
@@ -138,5 +136,3 @@ def motion_notify_callback(self, event):
 ax.set_ylim(-3,4)
 
 plt.show()
-
-

examples/event_handling/pick_event_demo.py

@@ -84,7 +84,6 @@ def pick_handler(event):
     for label in ax2.get_xticklabels():  # make the xtick labels pickable
         label.set_picker(True)
 
-
     def onpick1(event):
         if isinstance(event.artist, Line2D):
             thisline = event.artist
@@ -99,8 +98,6 @@ def onpick1(event):
             text = event.artist
             print('onpick1 text:', text.get_text())
 
-
-
     fig.canvas.mpl_connect('pick_event', onpick1)
 
 if 1: # picking with a custom hit test function
@@ -146,6 +143,7 @@ def onpick2(event):
 if 1: # picking on a scatter plot (matplotlib.collections.RegularPolyCollection)
 
     x, y, c, s = rand(4, 100)
+
     def onpick3(event):
         ind = event.ind
         print('onpick3 scatter:', ind, np.take(x, ind), np.take(y, ind))
@@ -174,4 +172,3 @@ def onpick4(event):
 
 
 plt.show()
-