Add np.ndarray to StringArrayTypes and fix/ignore remaining type errors

Author: weiji14

pygmt/clib/conversion.py

@@ -9,7 +9,7 @@
 import numpy as np
 from pygmt.exceptions import GMTInvalidInput
 
-StringArrayTypes = Sequence[str]
+StringArrayTypes = Sequence[str] | np.ndarray
 
 try:
     import pyarrow as pa
@@ -300,7 +300,7 @@ def strings_to_ctypes_array(strings: StringArrayTypes) -> ctp.Array:
         bytes_string_list = [s.encode() for s in strings]
     except AttributeError:  # 'pyarrow.StringScalar' object has no attribute 'encode'
         # Convert pyarrow.StringArray to Python list first
-        bytes_string_list = [s.encode() for s in strings.to_pylist()]
+        bytes_string_list = [s.encode() for s in strings.to_pylist()]  # type: ignore[union-attr]
     return (ctp.c_char_p * len(strings))(*bytes_string_list)
 
 

pygmt/clib/session.py

@@ -34,7 +34,7 @@
     tempfile_from_image,
 )
 
-StringArrayTypes = Sequence[str]
+StringArrayTypes = Sequence[str] | np.ndarray
 
 try:
     import pyarrow as pa
@@ -1005,9 +1005,8 @@ def put_strings(
             self.session_pointer, family_int, dataset, strings_pointer
         )
         if status != 0:
-            raise GMTCLibError(
-                f"Failed to put strings of type {strings.dtype} into dataset"
-            )
+            dtype = strings.dtype if hasattr(strings, "dtype") else type(strings)
+            raise GMTCLibError(f"Failed to put strings of type {dtype} into dataset")
 
     def put_matrix(self, dataset, matrix, pad=0):
         """