make all datetime types consistent with JVM type classes

Author: dengziming

python/pyspark/sql/types.py

@@ -368,8 +368,10 @@ class BooleanType(AtomicType, metaclass=DataTypeSingleton):
 
     pass
 
+
 class DatetimeType(AtomicType):
     """Super class of ass datetime data type."""
+
     def needConversion(self) -> bool:
         return True
 
@@ -390,8 +392,10 @@ def fromInternal(self, v: int) -> datetime.date:
 
 class AnyTimeType(DatetimeType):
     """A TIME type of any valid precision."""
+
     pass
 
+
 class TimeType(AnyTimeType):
     """Time (datetime.time) data type."""