[libchamplain] Implement flake8 suggestions for Python demos

[Jiří Techet <jiritechet src gnome org>]

commit 2748a76369e91a6c5002b8e17edcb7b8be739e65
Author: Chris Mayo <aklhfex gmail com>
Date:   Sat Aug 12 11:27:23 2017 +0100

    Implement flake8 suggestions for Python demos
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786195

 demos/keyboard-mapping.py |   13 +++++++------
 demos/launcher-gtk.py     |    9 +++++----
 demos/mapbox.py           |    4 +---
 demos/minimal.py          |    3 +--
 demos/polygons.py         |    6 +++---
 5 files changed, 17 insertions(+), 18 deletions(-)
---
diff --git a/demos/keyboard-mapping.py b/demos/keyboard-mapping.py
index 50eb623..45925b5 100755
--- a/demos/keyboard-mapping.py
+++ b/demos/keyboard-mapping.py
@@ -9,7 +9,7 @@ import gi
 gi.require_version('GtkChamplain', '0.12')
 gi.require_version('GtkClutter', '1.0')
 from gi.repository import GtkClutter
-from gi.repository import GObject, Gtk, Gdk, GtkChamplain 
+from gi.repository import Gtk, Gdk, GtkChamplain
 
 class KeyboardMapping:
 
@@ -30,17 +30,17 @@ class KeyboardMapping:
     def on_key_press(self, widget, ev):
         deltax = self.widget.get_allocation().width / 4
         deltay = self.widget.get_allocation().height / 4
-        if ev.keyval == Gdk.KEY_Left: 
+        if ev.keyval == Gdk.KEY_Left:
             self.scroll(-deltax, 0)
-        elif ev.keyval == Gdk.KEY_Right: 
+        elif ev.keyval == Gdk.KEY_Right:
             self.scroll(deltax, 0)
-        elif ev.keyval == Gdk.KEY_Up: 
+        elif ev.keyval == Gdk.KEY_Up:
             self.scroll(0, -deltay)
-        elif ev.keyval == Gdk.KEY_Down: 
+        elif ev.keyval == Gdk.KEY_Down:
             self.scroll(0, deltay)
         elif ev.keyval == Gdk.KEY_plus or ev.keyval == Gdk.KEY_KP_Add:
             self.view.zoom_in()
-        elif ev.keyval == Gdk.KEY_minus or ev.keyval == Gdk.KEY_KP_Subtract: 
+        elif ev.keyval == Gdk.KEY_minus or ev.keyval == Gdk.KEY_KP_Subtract:
             self.view.zoom_out()
         else:
             return False
@@ -59,6 +59,7 @@ class KeyboardMapping:
         self.view.center_on(lat, lon)
         #self.view.go_to(lat, lon)
 
+
 if __name__ == "__main__":
     KeyboardMapping()
     Gtk.main()
diff --git a/demos/launcher-gtk.py b/demos/launcher-gtk.py
index 1035495..1fb402d 100755
--- a/demos/launcher-gtk.py
+++ b/demos/launcher-gtk.py
@@ -6,10 +6,11 @@ gi.require_version('Champlain', '0.12')
 gi.require_version('GtkChamplain', '0.12')
 gi.require_version('GtkClutter', '1.0')
 from gi.repository import GtkClutter, Clutter
-GtkClutter.init([]) # Must be initialized before importing those:
+GtkClutter.init([])  # Must be initialized before importing those:
 from gi.repository import GObject, Gtk, Champlain, GtkChamplain, Pango
 
-import os, sys
+import os
+import sys
 os.chdir(os.path.dirname(os.path.abspath(sys.argv[0])))
 
 class LauncherGTK:
@@ -137,7 +138,7 @@ class LauncherGTK:
         iter = widget.get_active_iter()
         id = model.get_value(iter, 0)
         map_source_factory = Champlain.MapSourceFactory.dup_default()
-        source = map_source_factory.create_cached_source(id);
+        source = map_source_factory.create_cached_source(id)
         self.view.set_property("map-source", source)
 
     def map_zoom_changed(self, widget, value):
@@ -157,7 +158,6 @@ class LauncherGTK:
         print("Montreal was clicked\n")
         return True
 
-
     def create_marker_layer(self, view):
         orange = Clutter.Color.new(0xf3, 0x94, 0x07, 0xbb)
         layer = Champlain.MarkerLayer()
@@ -201,6 +201,7 @@ class LauncherGTK:
         layer.show()
         return layer
 
+
 if __name__ == "__main__":
     GObject.threads_init()
     LauncherGTK()
diff --git a/demos/mapbox.py b/demos/mapbox.py
index 6921ca3..badd0bb 100755
--- a/demos/mapbox.py
+++ b/demos/mapbox.py
@@ -10,7 +10,7 @@ gi.require_version('Champlain', '0.12')
 gi.require_version('GtkChamplain', '0.12')
 gi.require_version('GtkClutter', '1.0')
 from gi.repository import GtkClutter
-from gi.repository import GObject, Gtk, Champlain, GtkChamplain
+from gi.repository import Gtk, Champlain, GtkChamplain
 
 ACCESS_TOKEN = "PUT YOUR ACCESS TOKEN HERE!!!"
 
@@ -72,5 +72,3 @@ window.add(widget)
 window.show_all()
 
 Gtk.main()
-
-
diff --git a/demos/minimal.py b/demos/minimal.py
index 03a9b12..da3cc32 100755
--- a/demos/minimal.py
+++ b/demos/minimal.py
@@ -9,7 +9,7 @@ import gi
 gi.require_version('GtkChamplain', '0.12')
 gi.require_version('GtkClutter', '1.0')
 from gi.repository import GtkClutter
-from gi.repository import GObject, Gtk, GtkChamplain 
+from gi.repository import Gtk, GtkChamplain
 
 GtkClutter.init([])
 
@@ -23,4 +23,3 @@ window.add(widget)
 window.show_all()
 
 Gtk.main()
-
diff --git a/demos/polygons.py b/demos/polygons.py
index 8344512..d06e416 100755
--- a/demos/polygons.py
+++ b/demos/polygons.py
@@ -33,7 +33,7 @@ def zoom_out(widget, event, view):
 def make_button(text):
        black = Clutter.Color.new(0x00, 0x00, 0x00, 0xff)
        white = Clutter.Color.new(0xff, 0xff, 0xff, 0xff)
-  
+
        button = Clutter.Actor()
        
        button_bg = Clutter.Actor()
@@ -81,7 +81,7 @@ if __name__ == '__main__':
        buttons.add_child(button)
        button.set_reactive(True)
        (width, height) = button.get_size()
-       total_width += width + PADDING;
+       total_width += width + PADDING
        #button.connect('button-release-event', zoom_in, view)
        button.connect('button-release-event', zoom_in, view)
        
@@ -110,7 +110,7 @@ if __name__ == '__main__':
 
        dash = [6, 2]
        layer.set_dash(dash)
-  
+
        # Draw a path
        layer = Champlain.PathLayer()
        append_point(layer, 45.1386, -73.9196)