PEP 8 nits in json package

Lib/json/tests/__init__.py

@@ -31,7 +31,5 @@ def main():
     runner.run(suite)
 
 if __name__ == '__main__':
-    import os
-    import sys
     sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
     main()

Lib/json/tests/test_recursion.py

@@ -5,6 +5,7 @@ import json
 class JSONTestObject:
     pass
 
+
 class RecursiveJSONEncoder(json.JSONEncoder):
     recurse = False
     def default(self, o):
@@ -15,6 +16,7 @@ class RecursiveJSONEncoder(json.JSONEncoder):
                 return 'JSONTestObject'
         return json.JSONEncoder.default(o)
 
+
 class TestRecursion(TestCase):
     def test_listrecursion(self):
         x = []

Lib/json/tool.py

@@ -8,6 +8,7 @@ Usage::
     }
     $ echo '{ 1.2:3.4}' | python -mjson.tool
     Expecting property name: line 1 column 2 (char 2)
+
 """
 import sys
 import json