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

diff --git a/Lib/tkinter/simpledialog.py b/Lib/tkinter/simpledialog.py
index a95f551..8524417 100644
--- a/Lib/tkinter/simpledialog.py
+++ b/Lib/tkinter/simpledialog.py
@@ -28,6 +28,7 @@
 
 import tkinter # used at _QueryDialog for tkinter._default_root
 
+
 class SimpleDialog:
 
     def __init__(self, master,
@@ -119,7 +120,6 @@
     '''
 
     def __init__(self, parent, title = None):
-
         '''Initialize a dialog.
 
         Arguments:
@@ -324,9 +324,11 @@
 
 class _QueryInteger(_QueryDialog):
     errormessage = "Not an integer."
+
     def getresult(self):
         return self.getint(self.entry.get())
 
+
 def askinteger(title, prompt, **kw):
     '''get an integer from the user
 
@@ -341,11 +343,14 @@
     d = _QueryInteger(title, prompt, **kw)
     return d.result
 
+
 class _QueryFloat(_QueryDialog):
     errormessage = "Not a floating point value."
+
     def getresult(self):
         return self.getdouble(self.entry.get())
 
+
 def askfloat(title, prompt, **kw):
     '''get a float from the user
 
@@ -360,6 +365,7 @@
     d = _QueryFloat(title, prompt, **kw)
     return d.result
 
+
 class _QueryString(_QueryDialog):
     def __init__(self, *args, **kw):
         if "show" in kw:
@@ -378,6 +384,7 @@
     def getresult(self):
         return self.entry.get()
 
+
 def askstring(title, prompt, **kw):
     '''get a string from the user
 
@@ -393,7 +400,6 @@
     return d.result
 
 
-
 if __name__ == '__main__':
 
     def test():