Fixed PEP8 coding style violations of "unit"folder

`pep8 unit/*.py --ignore=E501` tells us everything is ok.

As part of http://24pullrequests.com

unit/agg_memleak.py

@@ -3,12 +3,13 @@
 """
 
 from __future__ import print_function
-import sys, time, os
+import os
 from matplotlib.ft2font import FT2Font
 from numpy.random import rand
 from matplotlib.backend_bases import GraphicsContextBase
 from matplotlib.backends._backend_agg import RendererAgg
 
+
 def report_memory(i):
     pid = os.getpid()
     a2 = os.popen('ps -p %d -o rss,sz' % pid).readlines()
@@ -20,40 +21,41 @@ def report_memory(i):
 N = 200
 for i in range(N):
     gc = GraphicsContextBase()
-    gc.set_clip_rectangle( [20,20,20,20] )
-    o = RendererAgg(400,400, 72)
+    gc.set_clip_rectangle([20, 20, 20, 20])
+    o = RendererAgg(400, 400, 72)
 
     for j in range(50):
-        xs = [400*int(rand()) for k in range(8)]
-        ys = [400*int(rand()) for k in range(8)]
-        rgb = (1,0,0)
+        xs = [400 * int(rand()) for k in range(8)]
+        ys = [400 * int(rand()) for k in range(8)]
+        rgb = (1, 0, 0)
         pnts = zip(xs, ys)
         o.draw_polygon(gc, rgb, pnts)   # no such method??
         o.draw_polygon(gc, None, pnts)
 
     for j in range(50):
-        x = [400*int(rand()) for k in range(4)]
-        y = [400*int(rand()) for k in range(4)]
-        o.draw_lines( gc, x, y)
+        x = [400 * int(rand()) for k in range(4)]
+        y = [400 * int(rand()) for k in range(4)]
+        o.draw_lines(gc, x, y)
 
     for j in range(50):
-        args = [400*int(rand()) for k in range(4)]
-        rgb = (1,0,0)
+        args = [400 * int(rand()) for k in range(4)]
+        rgb = (1, 0, 0)
         o.draw_rectangle(gc, rgb, *args)
 
-    if 1: # add text
+    if 1:  # add text
         font = FT2Font(fname)
         font.clear()
         font.set_text('hi mom', 60)
         font.set_size(12, 72)
         o.draw_text_image(font.get_image(), 30, 40, gc)
 
-    o.write_png('aggtest%d.png'%i)
+    o.write_png('aggtest%d.png' % i)
     val = report_memory(i)
-    if i==1: start = val
+    if i == 1:
+        start = val
 
 end = val
-print('Average memory consumed per loop: %1.4f\n' % ((end-start)/float(N)))
+print('Average memory consumed per loop: %1.4f\n' % ((end - start) / float(N)))
 
 # w/o text and w/o write_png: Average memory consumed per loop: 0.02
 # w/o text and w/ write_png : Average memory consumed per loop: 0.3400

unit/compare_backend_driver_results.py

@@ -1,6 +1,7 @@
 from __future__ import print_function
 import sys
 
+
 def parse_results(filename):
     results = {}
     fd = open(filename, 'r')
@@ -22,11 +23,11 @@ def check_results_are_compatible(results_a, results_b):
     for section in results_a.keys():
         if not section in results_b:
             raise RuntimeError("Backend '%s' in first set, but not in second" % section)
-    
+
     for section in results_b.keys():
         if not section in results_a:
             raise RuntimeError("Backend '%s' in second set, but not in first" % section)
-    
+
 
 def compare_results(results_a, results_b):
     check_results_are_compatible(results_a, results_b)

unit/ellipse_large.py

@@ -1,6 +1,6 @@
 
 # This example can be boiled down to a more simplistic example
-# to show the problem, but bu including the upper and lower
+# to show the problem, but including the upper and lower
 # bound ellipses, it demonstrates how significant this error
 # is to our plots.
 
@@ -14,129 +14,121 @@
 y = 6720.850
 
 # get is the radius of a circle through this point
-r = math.sqrt( x*x+y*y )
+r = math.sqrt(x * x + y * y)
 
 # show some comparative circles
 delta = 6
 
 
 ##################################################
-def custom_ellipse( ax, x, y, major, minor, theta, numpoints = 750, **kwargs ):
-   xs = []
-   ys = []
-   incr = 2.0*math.pi / numpoints
-   incrTheta = 0.0
-   while incrTheta <= (2.0*math.pi):
-      a = major * math.cos( incrTheta )
-      b = minor * math.sin( incrTheta )
-      l = math.sqrt( ( a**2 ) + ( b**2 ) )
-      phi = math.atan2( b, a )
-      incrTheta += incr
-
-      xs.append( x + ( l * math.cos( theta + phi ) ) )
-      ys.append( y + ( l * math.sin( theta + phi ) ) )
-   # end while
-
-   incrTheta = 2.0*math.pi
-   a = major * math.cos( incrTheta )
-   b = minor * math.sin( incrTheta )
-   l = sqrt( ( a**2 ) + ( b**2 ) )
-   phi = math.atan2( b, a )
-   xs.append( x + ( l * math.cos( theta + phi ) ) )
-   ys.append( y + ( l * math.sin( theta + phi ) ) )
-
-   ellipseLine = ax.plot( xs, ys, **kwargs )
-
-
+def custom_ellipse(ax, x, y, major, minor, theta, numpoints=750, **kwargs):
+    xs = []
+    ys = []
+    incr = 2.0 * math.pi / numpoints
+    incrTheta = 0.0
+    while incrTheta <= (2.0 * math.pi):
+        a = major * math.cos(incrTheta)
+        b = minor * math.sin(incrTheta)
+        l = math.sqrt((a ** 2) + (b ** 2))
+        phi = math.atan2(b, a)
+        incrTheta += incr
+
+        xs.append(x + (l * math.cos(theta + phi)))
+        ys.append(y + (l * math.sin(theta + phi)))
+    # end while
+
+    incrTheta = 2.0 * math.pi
+    a = major * math.cos(incrTheta)
+    b = minor * math.sin(incrTheta)
+    l = sqrt((a ** 2) + (b ** 2))
+    phi = math.atan2(b, a)
+    xs.append(x + (l * math.cos(theta + phi)))
+    ys.append(y + (l * math.sin(theta + phi)))
+
+    ellipseLine = ax.plot(xs, ys, **kwargs)
 
 
 ##################################################
 # make the axes
-ax1 = subplot( 311, aspect='equal' )
-ax1.set_aspect( 'equal', 'datalim' )
+ax1 = subplot(311, aspect='equal')
+ax1.set_aspect('equal', 'datalim')
 
 # make the lower-bound ellipse
 diam = (r - delta) * 2.0
-lower_ellipse = Ellipse( (0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkgreen" )
-ax1.add_patch( lower_ellipse )
+lower_ellipse = Ellipse((0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkgreen")
+ax1.add_patch(lower_ellipse)
 
 # make the target ellipse
 diam = r * 2.0
-target_ellipse = Ellipse( (0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkred" )
-ax1.add_patch( target_ellipse )
+target_ellipse = Ellipse((0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkred")
+ax1.add_patch(target_ellipse)
 
 # make the upper-bound ellipse
 diam = (r + delta) * 2.0
-upper_ellipse = Ellipse( (0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkblue" )
-ax1.add_patch( upper_ellipse )
+upper_ellipse = Ellipse((0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkblue")
+ax1.add_patch(upper_ellipse)
 
 # make the target
 diam = delta * 2.0
-target = Ellipse( (x, y), diam, diam, 0.0, fill=False, edgecolor="#DD1208" )
-ax1.add_patch( target )
+target = Ellipse((x, y), diam, diam, 0.0, fill=False, edgecolor="#DD1208")
+ax1.add_patch(target)
 
 # give it a big marker
-ax1.plot( [x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10 )
+ax1.plot([x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10)
 
 ##################################################
 # make the axes
-ax = subplot( 312, aspect='equal' , sharex=ax1, sharey=ax1)
-ax.set_aspect( 'equal', 'datalim' )
+ax = subplot(312, aspect='equal', sharex=ax1, sharey=ax1)
+ax.set_aspect('equal', 'datalim')
 
 # make the lower-bound arc
 diam = (r - delta) * 2.0
-lower_arc = Arc( (0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkgreen" )
-ax.add_patch( lower_arc )
+lower_arc = Arc((0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkgreen")
+ax.add_patch(lower_arc)
 
 # make the target arc
 diam = r * 2.0
-target_arc = Arc( (0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkred" )
-ax.add_patch( target_arc )
+target_arc = Arc((0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkred")
+ax.add_patch(target_arc)
 
 # make the upper-bound arc
 diam = (r + delta) * 2.0
-upper_arc = Arc( (0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkblue" )
-ax.add_patch( upper_arc )
+upper_arc = Arc((0.0, 0.0), diam, diam, 0.0, fill=False, edgecolor="darkblue")
+ax.add_patch(upper_arc)
 
 # make the target
 diam = delta * 2.0
-target = Arc( (x, y), diam, diam, 0.0, fill=False, edgecolor="#DD1208" )
-ax.add_patch( target )
+target = Arc((x, y), diam, diam, 0.0, fill=False, edgecolor="#DD1208")
+ax.add_patch(target)
 
 # give it a big marker
-ax.plot( [x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10 )
-
-
-
-
+ax.plot([x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10)
 
 ##################################################
 # now lets do the same thing again using a custom ellipse function
 
-
-
 # make the axes
-ax = subplot( 313, aspect='equal', sharex=ax1, sharey=ax1 )
-ax.set_aspect( 'equal', 'datalim' )
+ax = subplot(313, aspect='equal', sharex=ax1, sharey=ax1)
+ax.set_aspect('equal', 'datalim')
 
 # make the lower-bound ellipse
-custom_ellipse( ax, 0.0, 0.0, r-delta, r-delta, 0.0, color="darkgreen" )
+custom_ellipse(ax, 0.0, 0.0, r - delta, r - delta, 0.0, color="darkgreen")
 
 # make the target ellipse
-custom_ellipse( ax, 0.0, 0.0, r, r, 0.0, color="darkred" )
+custom_ellipse(ax, 0.0, 0.0, r, r, 0.0, color="darkred")
 
 # make the upper-bound ellipse
-custom_ellipse( ax, 0.0, 0.0, r+delta, r+delta, 0.0, color="darkblue" )
+custom_ellipse(ax, 0.0, 0.0, r + delta, r + delta, 0.0, color="darkblue")
 
 # make the target
-custom_ellipse( ax, x, y, delta, delta, 0.0, color="#BB1208" )
+custom_ellipse(ax, x, y, delta, delta, 0.0, color="#BB1208")
 
 # give it a big marker
-ax.plot( [x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10 )
+ax.plot([x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10)
 
 
 # give it a big marker
-ax.plot( [x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10 )
+ax.plot([x], [y], marker='x', linestyle='None', mfc='red', mec='red', markersize=10)
 
 ##################################################
 # lets zoom in to see the area of interest
@@ -146,5 +138,3 @@ def custom_ellipse( ax, x, y, major, minor, theta, numpoints = 750, **kwargs ):
 
 savefig("ellipse")
 show()
-
-

unit/legend_unit.py

@@ -3,20 +3,20 @@
 
 Ntests = 3
 t = np.arange(0.0, 1.0, 0.05)
-s = np.sin(2*np.pi*t)
+s = np.sin(2 * np.pi * t)
 
 # scatter creates a RegPolyCollection
 fig = figure()
 ax = fig.add_subplot(Ntests, 1, 1)
 N = 100
-x, y = 0.9*np.random.rand(2,N)
-area = np.pi*(10 * np.random.rand(N))**2 # 0 to 10 point radiuses
-ax.scatter(x,y,s=area, marker='^', c='r', label='scatter')
+x, y = 0.9 * np.random.rand(2, N)
+area = np.pi * (10 * np.random.rand(N)) ** 2  # 0 to 10 point radiuses
+ax.scatter(x, y, s=area, marker='^', c='r', label='scatter')
 ax.legend()
 
 # vlines creates a LineCollection
 ax = fig.add_subplot(Ntests, 1, 2)
-ax.vlines(t, [0], np.sin(2*np.pi*t), label='vlines')
+ax.vlines(t, [0], np.sin(2 * np.pi * t), label='vlines')
 ax.legend()
 
 # vlines creates a LineCollection

unit/longs_test.py

@@ -4,12 +4,12 @@
 from __future__ import print_function
 
 from pylab import *
-x = arange(1000) + 2**32
+x = arange(1000) + 2 ** 32
 
 subplot(211)
-plot(x,x)
+plot(x, x)
 
 subplot(212)
-loglog(x,x)
+loglog(x, x)
 
 show()

unit/memleak_gui.py

@@ -15,7 +15,6 @@
 
 '''
 from __future__ import print_function
-import os, sys, time
 import gc
 from optparse import OptionParser
 
@@ -52,7 +51,7 @@
 
 print('# columns are: iteration, OS memory (k), number of python objects')
 print('#')
-for i in range(indEnd+1):
+for i in range(indEnd + 1):
 
     fig = pylab.figure()
     fig.savefig('test')  # This seems to just slow down the testing.
@@ -63,9 +62,9 @@
     if options.verbose:
         if i % 10 == 0:
             #print ("iter: %4d OS memory: %8d Python objects: %8d" %
-            print ("%4d %8d %8d" %
-                   (i, val, len(gc.get_objects())))
-    if i==indStart: start = val # wait a few cycles for memory usage to stabilize
+            print("%4d %8d %8d" % (i, val, len(gc.get_objects())))
+    if i == indStart:
+        start = val  # wait a few cycles for memory usage to stabilize
 
 gc.collect()
 end = val
@@ -98,7 +97,7 @@
 
     print('# Averaging over loops %d to %d' % (indStart, indEnd))
     print('# Memory went from %dk to %dk' % (start, end))
-    print('# Average memory consumed per loop: %1.4fk bytes\n' % ((end-start)/float(indEnd-indStart)))
+    print('# Average memory consumed per loop: %1.4fk bytes\n' % ((end - start) / float(indEnd - indStart)))
 
 if options.cycles:
     cbook.print_cycles(gc.garbage)