Remove or PSYDAC_BACKENDS['python'] from StencilInterfaceMatrix

Author: max-models

psydac/linalg/stencil.py

@@ -2281,7 +2281,7 @@ def __init__(self, V, W, s_d, s_c, d_axis, c_axis, d_ext, c_ext, *, flip=None, p
         self._transpose_func = kernels['interface_transpose'][self._ndim]
 
         if backend is None:
-            backend = PSYDAC_BACKENDS.get(os.environ.get('PSYDAC_BACKEND')) or PSYDAC_BACKENDS['python']
+            backend = PSYDAC_BACKENDS.get(os.environ.get('PSYDAC_BACKEND'))# or PSYDAC_BACKENDS['python']
 
         if backend:
             self.set_backend(backend)