Fokko commented on code in PR #555:
URL: https://github.com/apache/iceberg-python/pull/555#discussion_r1552302617


##########
pyiceberg/manifest.py:
##########
@@ -283,31 +277,12 @@ def __repr__(self) -> str:
 }
 
 
-@singledispatch
-def partition_field_to_data_file_partition_field(partition_field_type: 
IcebergType) -> PrimitiveType:
-    raise TypeError(f"Unsupported partition field type: 
{partition_field_type}")
-
-
-@partition_field_to_data_file_partition_field.register(LongType)
-@partition_field_to_data_file_partition_field.register(DateType)
-@partition_field_to_data_file_partition_field.register(TimeType)
-@partition_field_to_data_file_partition_field.register(TimestampType)
-@partition_field_to_data_file_partition_field.register(TimestamptzType)
-def _(partition_field_type: PrimitiveType) -> IntegerType:
-    return IntegerType()
-
-
-@partition_field_to_data_file_partition_field.register(PrimitiveType)
-def _(partition_field_type: PrimitiveType) -> PrimitiveType:
-    return partition_field_type
-
-
-def data_file_with_partition(partition_type: StructType, format_version: 
TableVersion) -> StructType:
+def data_file_with_partition(partition_type: StructType, format_version: 
Literal[1, 2]) -> StructType:

Review Comment:
   Nit:
   ```suggestion
   def data_file_with_partition(partition_type: StructType, format_version: 
TableVersion) -> StructType:
   ```



##########
pyiceberg/manifest.py:
##########
@@ -289,10 +286,7 @@ def 
partition_field_to_data_file_partition_field(partition_field_type: IcebergTy
 
 
 @partition_field_to_data_file_partition_field.register(LongType)
-@partition_field_to_data_file_partition_field.register(DateType)

Review Comment:
   Beautiful, thanks 👍 



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