BUG: Don't import helpers in namespaces

Author: crusaderky

Diff for: array_api_compat/cupy/__init__.py

@@ -8,9 +8,6 @@
 
 # See the comment in the numpy __init__.py
 __import__(__package__ + '.linalg')
-
 __import__(__package__ + '.fft')
 
-from ..common._helpers import * # noqa: F401,F403
-
 __array_api_version__ = '2024.12'

Diff for: array_api_compat/dask/array/__init__.py

@@ -5,5 +5,6 @@
 
 __array_api_version__ = '2024.12'
 
+# See the comment in the numpy __init__.py
 __import__(__package__ + '.linalg')
 __import__(__package__ + '.fft')

Diff for: array_api_compat/numpy/__init__.py

@@ -14,17 +14,8 @@
 # It doesn't overwrite np.linalg from above. The import is generated
 # dynamically so that the library can be vendored.
 __import__(__package__ + '.linalg')
-
 __import__(__package__ + '.fft')
 
 from .linalg import matrix_transpose, vecdot # noqa: F401
 
-from ..common._helpers import * # noqa: F403
-
-try:
-    # Used in asarray(). Not present in older versions.
-    from numpy import _CopyMode # noqa: F401
-except ImportError:
-    pass
-
 __array_api_version__ = '2024.12'

Diff for: array_api_compat/numpy/_aliases.py

@@ -86,7 +86,7 @@ def asarray(
     *,
     dtype: Optional[DType] = None,
     device: Optional[Device] = None,
-    copy: "Optional[Union[bool, np._CopyMode]]" = None,
+    copy: Optional[Union[bool, np._CopyMode]] = None,
     **kwargs,
 ) -> Array:
     """

Diff for: array_api_compat/torch/__init__.py

@@ -9,16 +9,14 @@
         or 'cpu' in n
         or 'backward' in n):
         continue
-    exec(n + ' = torch.' + n)
+    exec(f"{n} = torch.{n}")
+del n
 
 # These imports may overwrite names from the import * above.
 from ._aliases import * # noqa: F403
 
 # See the comment in the numpy __init__.py
 __import__(__package__ + '.linalg')
-
 __import__(__package__ + '.fft')
 
-from ..common._helpers import * # noqa: F403
-
 __array_api_version__ = '2024.12'