bpo-34964: Make Tkinter sources more readable by adding blank lines. (GH-9822)

diff --git a/Lib/tkinter/filedialog.py b/Lib/tkinter/filedialog.py
index a71afb2..d9d3436 100644
--- a/Lib/tkinter/filedialog.py
+++ b/Lib/tkinter/filedialog.py
@@ -264,7 +264,6 @@
         self.quit(file)
 
 
-
 # For the following classes and modules:
 #
 # options (all have default values):
@@ -341,6 +340,7 @@
             return self._fixresult(widget, widget.tk.splitlist(result))
         return _Dialog._fixresult(self, widget, result)
 
+
 class SaveAs(_Dialog):
     "Ask for a filename to save as"
 
@@ -369,16 +369,19 @@
 #
 # convenience stuff
 
+
 def askopenfilename(**options):
     "Ask for a filename to open"
 
     return Open(**options).show()
 
+
 def asksaveasfilename(**options):
     "Ask for a filename to save as"
 
     return SaveAs(**options).show()
 
+
 def askopenfilenames(**options):
     """Ask for multiple filenames to open
 
@@ -390,6 +393,7 @@
 
 # FIXME: are the following  perhaps a bit too convenient?
 
+
 def askopenfile(mode = "r", **options):
     "Ask for a filename to open, and returned the opened file"
 
@@ -398,6 +402,7 @@
         return open(filename, mode)
     return None
 
+
 def askopenfiles(mode = "r", **options):
     """Ask for multiple filenames and return the open file
     objects
@@ -423,12 +428,12 @@
         return open(filename, mode)
     return None
 
+
 def askdirectory (**options):
     "Ask for a directory, and return the file name"
     return Directory(**options).show()
 
 
-
 # --------------------------------------------------------------------
 # test stuff
 
@@ -475,5 +480,6 @@
     saveasfilename=asksaveasfilename()
     print("saveas", saveasfilename.encode(enc))
 
+
 if __name__ == '__main__':
     test()