made consistent with PEP8

Author: AdamStone

pylearn2/train_extensions/live_monitoring.py

@@ -16,17 +16,17 @@
     zmq_available = True
 except:
     zmq_available = False
-    
+
 try:
     from PySide import QtCore, QtGui
 
     import sys
     import matplotlib
     matplotlib.use('Qt4Agg')
-    matplotlib.rcParams['backend.qt4']='PySide'
+    matplotlib.rcParams['backend.qt4'] = 'PySide'
 
-    from matplotlib.backends.backend_qt4agg \
-        import FigureCanvasQTAgg as FigureCanvas
+    from matplotlib.backends.backend_qt4agg import (
+        FigureCanvasQTAgg as FigureCanvas)
     from matplotlib.figure import Figure
 
     qt_available = True
@@ -388,14 +388,13 @@ def follow_channels(self, channel_list):
             plt.ion()
             plt.draw()
 
-
     def follow_channels_qt(self, channel_list):
         """
         Tracks and plots a specified set of channels in real time using
         a PySide Qt GUI. If the plot is closed, it can be reopened by
         calling lm.gui.start() (where lm is the instance of LiveMonitor)
         or new channels can be specified by calling this method again.
-        
+
         Alternative to the follow_channels method which avoids relying
         on matplotlib's interactive mode, which may not work for some
         setups.
@@ -408,46 +407,45 @@ def follow_channels_qt(self, channel_list):
         if not qt_available:
             raise ImportError('PySide needs to be installed for ' +
                               'this functionality')
-                              
+
         # only create qt app if running the first time
         if not hasattr(self, 'gui'):
             self.gui = LiveMonitorGUI(self, channel_list)
-        
+
         self.gui.channel_list = channel_list
         self.gui.start()
 
-
 if qt_available:
     class LiveMonitorGUI(QtGui.QMainWindow):
         def __init__(self, lm, channel_list):
             """
             PySide GUI implementation for live monitoring channels.
-            
+
             Parameters
             ----------
             lm : LiveMonitor instance
                 The LiveMonitor instance to which the GUI belongs.
-                
+
             channel_list : list
                 A list of the channels to display.
             """
             self.app = QtGui.QApplication(sys.argv)
-            
+
             super(LiveMonitorGUI, self).__init__()
             self.lm = lm
             self.channel_list = channel_list
             self.initUI()
-            
+
         def initUI(self):
-            self.fig = Figure(figsize=(600,600), dpi=72, facecolor=(1,1,1),
-                         edgecolor=(0,0,0))
+            self.fig = Figure(figsize=(600, 600), dpi=72,
+                              facecolor=(1, 1, 1), edgecolor=(0, 0, 0))
             self.ax = self.fig.add_subplot(111)
             self.canvas = FigureCanvas(self.fig)
             self.setCentralWidget(self.canvas)
-            
+
         def update(self):
             self.lm.update_channels(self.channel_list)
-            self.ax.cla() # clear previous plot
+            self.ax.cla()  # clear previous plot
             for channel_name in self.channel_list:
                 self.ax.plot(
                     self.lm.channels[channel_name].epoch_record,
@@ -456,11 +454,11 @@ def update(self):
                 )
             self.ax.legend()
             self.canvas.draw()
-                
+
         def closeEvent(self, event):
             self.updateTimer.stop()
             event.accept()
-                
+
         def start(self):
             self.updateTimer = QtCore.QTimer(self)
             self.updateTimer.timeout.connect(self.update)