fix: Add writelines proxy method

Author: effigies

nibabel/openers.py

@@ -21,7 +21,7 @@
 if ty.TYPE_CHECKING:
     from types import TracebackType
 
-    from _typeshed import WriteableBuffer
+    from _typeshed import ReadableBuffer, WriteableBuffer
 
     from ._typing import Self
 
@@ -231,6 +231,9 @@ def readinto(self, buffer: WriteableBuffer, /) -> int | None:
     def write(self, b: bytes, /) -> int | None:
         return self.fobj.write(b)
 
+    def writelines(self, lines: ty.Iterable[ReadableBuffer], /) -> None:
+        self.fobj.writelines(lines)
+
     def seek(self, pos: int, whence: int = 0, /) -> int:
         return self.fobj.seek(pos, whence)
 

nibabel/volumeutils.py

@@ -1364,7 +1364,7 @@ def shape_zoom_affine(
     return aff
 
 
-def rec2dict(rec: np.ndarray) -> dict[str, np.generic | np.ndarray]:
+def rec2dict(rec: np.record) -> dict[str, np.generic | np.ndarray]:
     """Convert recarray to dictionary
 
     Also converts scalar values to scalars
@@ -1387,7 +1387,7 @@ def rec2dict(rec: np.ndarray) -> dict[str, np.generic | np.ndarray]:
     True
     """
     dct = {}
-    for key in rec.dtype.fields:
+    for key in rec.dtype.fields or ():
         val = rec[key]
         try:
             val = val.item()