THRIFT-3596 Better conformance to PEP8

This closes #832
diff --git a/lib/py/src/compat.py b/lib/py/src/compat.py
index 06f672a..42403ea 100644
--- a/lib/py/src/compat.py
+++ b/lib/py/src/compat.py
@@ -1,27 +1,46 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
 import sys
 
 if sys.version_info[0] == 2:
 
-  from cStringIO import StringIO as BufferIO
+    from cStringIO import StringIO as BufferIO
 
-  def binary_to_str(bin_val):
-    return bin_val
+    def binary_to_str(bin_val):
+        return bin_val
 
-  def str_to_binary(str_val):
-    return str_val
+    def str_to_binary(str_val):
+        return str_val
 
 else:
 
-  from io import BytesIO as BufferIO
+    from io import BytesIO as BufferIO
 
-  def binary_to_str(bin_val):
-    try:
-      return bin_val.decode('utf8')
-    except:
-      return bin_val
+    def binary_to_str(bin_val):
+        try:
+            return bin_val.decode('utf8')
+        except:
+            return bin_val
 
-  def str_to_binary(str_val):
-    try:
-      return bytes(str_val, 'utf8')
-    except:
-      return str_val
+    def str_to_binary(str_val):
+        try:
+            return bytes(str_val, 'utf8')
+        except:
+            return str_val