Corrected to be PEP8 compliant.

AlexHarn · AlexHarn · commit 2f186ad831e9 · 2018-02-27T17:48:09.000+01:00
diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py
@@ -268,8 +268,9 @@ def _update_figure_dpi(self):
     @property
     def _dpi_ratio(self):
         # Not available on Qt4 or some older Qt5.
-        try:
-            return self.devicePixelRatio() or 1 # can be 0 in rare cases
+            try:
+            # self.devicePixelRatio() returns 0 in rare cases
+            return self.devicePixelRatio() or 1
         except AttributeError:
             return 1
 
