Most of the pep8 changes finished. Be careful, things may be horribly broken.

src/fenrirscreenreader/core/screenData.py

@@ -7,7 +7,7 @@
 from fenrirscreenreader.core import debug
 import time
 
-screenData = {
+screen_data = {
     'columns': 0,
     'lines': 0,
     'oldDelta': '',
@@ -15,23 +15,23 @@ screenData = {
     'oldNegativeDelta': '',
     'oldCursorReview': None,
     'oldCursorAttrib': None,
-    'oldCursor': {'x': 0, 'y': 0},
+    'old_cursor': {'x': 0, 'y': 0},
     'oldContentBytes': b'',
-    'oldContentText': '',
+    'old_content_text': '',
     'oldContentAttrib': None,
     'oldApplication': '',
     'oldTTY': None,
-    'newDelta': '',
+    'new_delta': '',
     'newNegativeDelta': '',
     'newAttribDelta': '',
     'newCursorReview': None,
     'newCursorAttrib': None,
-    'newCursor': {'x': 0, 'y': 0},
+    'new_cursor': {'x': 0, 'y': 0},
     'newContentBytes': b'',
-    'newContentText': '',
+    'new_content_text': '',
     'newContentAttrib': None,
     'newTTY': '0',
-    'newApplication': '',
+    'new_application': '',
     'lastScreenUpdate': time.time(),
     'autoIgnoreScreens': [],
 }