[SPARK-2470] PEP8 fixes to PySpark

This pull request aims to resolve all outstanding PEP8 violations in PySpark.

Author: Nicholas Chammas <nicholas.chammas@gmail.com>
Author: nchammas <nicholas.chammas@gmail.com>

Closes #1505 from nchammas/master and squashes the following commits:

98171af [Nicholas Chammas] [SPARK-2470] revert PEP 8 fixes to cloudpickle
cba7768 [Nicholas Chammas] [SPARK-2470] wrap expression list in parentheses
e178dbe [Nicholas Chammas] [SPARK-2470] style - change position of line break
9127d2b [Nicholas Chammas] [SPARK-2470] wrap expression lists in parentheses
22132a4 [Nicholas Chammas] [SPARK-2470] wrap conditionals in parentheses
24639bc [Nicholas Chammas] [SPARK-2470] fix whitespace for doctest
7d557b7 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to tests.py
8f8e4c0 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to storagelevel.py
b3b96cf [Nicholas Chammas] [SPARK-2470] PEP8 fixes to statcounter.py
d644477 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to worker.py
aa3a7b6 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to sql.py
1916859 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to shell.py
95d1d95 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to serializers.py
a0fec2e [Nicholas Chammas] [SPARK-2470] PEP8 fixes to mllib
c85e1e5 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to join.py
d14f2f1 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to __init__.py
81fcb20 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to resultiterable.py
1bde265 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to java_gateway.py
7fc849c [Nicholas Chammas] [SPARK-2470] PEP8 fixes to daemon.py
ca2d28b [Nicholas Chammas] [SPARK-2470] PEP8 fixes to context.py
f4e0039 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to conf.py
a6d5e4b [Nicholas Chammas] [SPARK-2470] PEP8 fixes to cloudpickle.py
f0a7ebf [Nicholas Chammas] [SPARK-2470] PEP8 fixes to rddsampler.py
4dd148f [nchammas] Merge pull request #5 from apache/master
f7e4581 [Nicholas Chammas] unrelated pep8 fix
a36eed0 [Nicholas Chammas] name ec2 instances and security groups consistently
de7292a [nchammas] Merge pull request #4 from apache/master
2e4fe00 [nchammas] Merge pull request #3 from apache/master
89fde08 [nchammas] Merge pull request #2 from apache/master
69f6e22 [Nicholas Chammas] PEP8 fixes
2627247 [Nicholas Chammas] broke up lines before they hit 100 chars
6544b7e [Nicholas Chammas] [SPARK-2065] give launched instances names
69da6cf [nchammas] Merge pull request #1 from apache/master

1 files changed, 21 insertions, 17 deletions

diff --git a/python/pyspark/sql.py b/python/pyspark/sql.py
index ffe177576f..cb83e89176 100644
--- a/python/pyspark/sql.py
+++ b/python/pyspark/sql.py
@@ -30,7 +30,7 @@ class SQLContext:
     tables, execute SQL over tables, cache tables, and read parquet files.
     """
 
-    def __init__(self, sparkContext, sqlContext = None):
+    def __init__(self, sparkContext, sqlContext=None):
         """Create a new SQLContext.
 
         @param sparkContext: The SparkContext to wrap.
@@ -137,7 +137,6 @@ class SQLContext:
         jschema_rdd = self._ssql_ctx.parquetFile(path)
         return SchemaRDD(jschema_rdd, self)
 
-
     def jsonFile(self, path):
         """Loads a text file storing one JSON object per line,
            returning the result as a L{SchemaRDD}.
@@ -234,8 +233,8 @@ class HiveContext(SQLContext):
                 self._scala_HiveContext = self._get_hive_ctx()
             return self._scala_HiveContext
         except Py4JError as e:
-            raise Exception("You must build Spark with Hive. Export 'SPARK_HIVE=true' and run " \
-                            "sbt/sbt assembly" , e)
+            raise Exception("You must build Spark with Hive. Export 'SPARK_HIVE=true' and run "
+                            "sbt/sbt assembly", e)
 
     def _get_hive_ctx(self):
         return self._jvm.HiveContext(self._jsc.sc())
@@ -377,7 +376,7 @@ class SchemaRDD(RDD):
         """
         self._jschema_rdd.registerAsTable(name)
 
-    def insertInto(self, tableName, overwrite = False):
+    def insertInto(self, tableName, overwrite=False):
         """Inserts the contents of this SchemaRDD into the specified table.
 
         Optionally overwriting any existing data.
@@ -420,7 +419,7 @@ class SchemaRDD(RDD):
         # in Java land in the javaToPython function. May require a custom
         # pickle serializer in Pyrolite
         return RDD(jrdd, self._sc, BatchedSerializer(
-                        PickleSerializer())).map(lambda d: Row(d))
+            PickleSerializer())).map(lambda d: Row(d))
 
     # We override the default cache/persist/checkpoint behavior as we want to cache the underlying
     # SchemaRDD object in the JVM, not the PythonRDD checkpointed by the super class
@@ -483,6 +482,7 @@ class SchemaRDD(RDD):
         else:
             raise ValueError("Can only subtract another SchemaRDD")
 
+
 def _test():
     import doctest
     from array import array
@@ -493,20 +493,25 @@ def _test():
     sc = SparkContext('local[4]', 'PythonTest', batchSize=2)
     globs['sc'] = sc
     globs['sqlCtx'] = SQLContext(sc)
-    globs['rdd'] = sc.parallelize([{"field1" : 1, "field2" : "row1"},
-        {"field1" : 2, "field2": "row2"}, {"field1" : 3, "field2": "row3"}])
-    jsonStrings = ['{"field1": 1, "field2": "row1", "field3":{"field4":11}}',
-       '{"field1" : 2, "field3":{"field4":22, "field5": [10, 11]}, "field6":[{"field7": "row2"}]}',
-       '{"field1" : null, "field2": "row3", "field3":{"field4":33, "field5": []}}']
+    globs['rdd'] = sc.parallelize(
+        [{"field1": 1, "field2": "row1"},
+         {"field1": 2, "field2": "row2"},
+         {"field1": 3, "field2": "row3"}]
+    )
+    jsonStrings = [
+        '{"field1": 1, "field2": "row1", "field3":{"field4":11}}',
+        '{"field1" : 2, "field3":{"field4":22, "field5": [10, 11]}, "field6":[{"field7": "row2"}]}',
+        '{"field1" : null, "field2": "row3", "field3":{"field4":33, "field5": []}}'
+    ]
     globs['jsonStrings'] = jsonStrings
     globs['json'] = sc.parallelize(jsonStrings)
     globs['nestedRdd1'] = sc.parallelize([
-        {"f1" : array('i', [1, 2]), "f2" : {"row1" : 1.0}},
-        {"f1" : array('i', [2, 3]), "f2" : {"row2" : 2.0}}])
+        {"f1": array('i', [1, 2]), "f2": {"row1": 1.0}},
+        {"f1": array('i', [2, 3]), "f2": {"row2": 2.0}}])
     globs['nestedRdd2'] = sc.parallelize([
-        {"f1" : [[1, 2], [2, 3]], "f2" : set([1, 2]), "f3" : (1, 2)},
-        {"f1" : [[2, 3], [3, 4]], "f2" : set([2, 3]), "f3" : (2, 3)}])
-    (failure_count, test_count) = doctest.testmod(globs=globs,optionflags=doctest.ELLIPSIS)
+        {"f1": [[1, 2], [2, 3]], "f2": set([1, 2]), "f3": (1, 2)},
+        {"f1": [[2, 3], [3, 4]], "f2": set([2, 3]), "f3": (2, 3)}])
+    (failure_count, test_count) = doctest.testmod(globs=globs, optionflags=doctest.ELLIPSIS)
     globs['sc'].stop()
     if failure_count:
         exit(-1)
@@ -514,4 +519,3 @@ def _test():
 
 if __name__ == "__main__":
     _test()
-