[SPARK-6661] Python type errors should print type, not object

Author: Elisey Zanko <elisey.zanko@gmail.com>

Closes #5361 from 31z4/spark-6661 and squashes the following commits:

73c5d79 [Elisey Zanko] Python type errors should print type, not object

1 files changed, 6 insertions, 6 deletions

diff --git a/python/pyspark/sql/_types.py b/python/pyspark/sql/_types.py
index 492c0cbdcf..110d1152fb 100644
--- a/python/pyspark/sql/_types.py
+++ b/python/pyspark/sql/_types.py
@@ -562,8 +562,8 @@ def _infer_type(obj):
     else:
         try:
             return _infer_schema(obj)
-        except ValueError:
-            raise ValueError("not supported type: %s" % type(obj))
+        except TypeError:
+            raise TypeError("not supported type: %s" % type(obj))
 
 
 def _infer_schema(row):
@@ -584,7 +584,7 @@ def _infer_schema(row):
         items = sorted(row.__dict__.items())
 
     else:
-        raise ValueError("Can not infer schema for type: %s" % type(row))
+        raise TypeError("Can not infer schema for type: %s" % type(row))
 
     fields = [StructField(k, _infer_type(v), True) for k, v in items]
     return StructType(fields)
@@ -696,7 +696,7 @@ def _merge_type(a, b):
         return a
     elif type(a) is not type(b):
         # TODO: type cast (such as int -> long)
-        raise TypeError("Can not merge type %s and %s" % (a, b))
+        raise TypeError("Can not merge type %s and %s" % (type(a), type(b)))
 
     # same type
     if isinstance(a, StructType):
@@ -773,7 +773,7 @@ def _create_converter(dataType):
         elif hasattr(obj, "__dict__"):  # object
             d = obj.__dict__
         else:
-            raise ValueError("Unexpected obj: %s" % obj)
+            raise TypeError("Unexpected obj type: %s" % type(obj))
 
         if convert_fields:
             return tuple([conv(d.get(name)) for name, conv in zip(names, converters)])
@@ -912,7 +912,7 @@ def _infer_schema_type(obj, dataType):
         return StructType(fields)
 
     else:
-        raise ValueError("Unexpected dataType: %s" % dataType)
+        raise TypeError("Unexpected dataType: %s" % type(dataType))
 
 
 _acceptable_types = {