Update pyiceberg/schema.py

Co-authored-by: Fokko Driesprong <fokko@apache.org>

Author: ndrluis

pyiceberg/schema.py

@@ -183,9 +183,9 @@ def as_struct(self) -> StructType:
         return StructType(*self.fields)
 
     def as_arrow(self) -> "pa.Schema":
-        from pyiceberg.io.pyarrow import schema_to_pyarrow
-
         """Return the schema as an Arrow schema."""
+
+        from pyiceberg.io.pyarrow import schema_to_pyarrow
         return schema_to_pyarrow(self)
 
     def find_field(self, name_or_id: Union[str, int], case_sensitive: bool = True) -> NestedField: