SYSTEMML-829 Python API Broken In Python 3 Due To Inclusion Of Tabs I…

…n Source File

Currently, our Python Api (SystemML.py) does not support Python 3 due to
accidental inclusion of tabs into the source file. Both Python 2 and
Python 3 heavily discourage the use of any tabs, and Python 3 explicitly
does not allow a file to contain both tabs and spaces. Therefore,
this fix replaces all tabs with spaces, and we must ensure that any
future Python additions *only* include spaces.

src/main/java/org/apache/sysml/api/python/SystemML.py

@@ -210,15 +210,15 @@ def __init__(self, jmlOut, sc):
 
     def getBinaryBlockedRDD(self, varName):
         raise Exception('Not supported in Python MLContext')
-		#try:
+        #try:
         #    rdd = RDD(self.jmlOut.getBinaryBlockedRDD(varName), self.sc)
         #    return rdd
         #except Py4JJavaError:
         #    traceback.print_exc()
 
     def getMatrixCharacteristics(self, varName):
         raise Exception('Not supported in Python MLContext')
-		#try:
+        #try:
         #    chars = self.jmlOut.getMatrixCharacteristics(varName)
         #    return chars
         #except Py4JJavaError:
@@ -234,14 +234,14 @@ def getDF(self, sqlContext, varName):
 
     def getMLMatrix(self, sqlContext, varName):
         raise Exception('Not supported in Python MLContext')
-		#try:
+        #try:
         #    mlm = self.jmlOut.getMLMatrix(sqlContext._scala_SQLContext, varName)
         #    return mlm
         #except Py4JJavaError:
         #    traceback.print_exc()
 
     def getStringRDD(self, varName, format):
-		raise Exception('Not supported in Python MLContext')
+        raise Exception('Not supported in Python MLContext')
         #try:
         #    rdd = RDD(self.jmlOut.getStringRDD(varName, format), self.sc)
         #    return rdd