[SPARK-14903][SPARK-14071][ML][PYTHON] Revert : MLWritable.write property

## What changes were proposed in this pull request?

SPARK-14071 changed MLWritable.write to be a property.  This reverts that change since there was not a good way to make MLReadable.read appear to be a property.

## How was this patch tested?

existing unit tests

Author: Joseph K. Bradley <joseph@databricks.com>

Closes #12671 from jkbradley/revert-MLWritable-write-py.

1 files changed, 1 insertions, 3 deletions

diff --git a/python/pyspark/ml/util.py b/python/pyspark/ml/util.py
index dc3914f95e..9d28823196 100644
--- a/python/pyspark/ml/util.py
+++ b/python/pyspark/ml/util.py
@@ -120,14 +120,13 @@ class MLWritable(object):
     .. versionadded:: 2.0.0
     """
 
-    @property
     def write(self):
         """Returns an MLWriter instance for this ML instance."""
         raise NotImplementedError("MLWritable is not yet implemented for type: %r" % type(self))
 
     def save(self, path):
         """Save this ML instance to the given path, a shortcut of `write().save(path)`."""
-        self.write.save(path)
+        self.write().save(path)
 
 
 @inherit_doc
@@ -136,7 +135,6 @@ class JavaMLWritable(MLWritable):
     (Private) Mixin for ML instances that provide :py:class:`JavaMLWriter`.
     """
 
-    @property
     def write(self):
         """Returns an MLWriter instance for this ML instance."""
         return JavaMLWriter(self)