use different precision initial conditions without conversion

also, fix typo in __main__.py

bfps/DNS.py

@@ -930,18 +930,9 @@ class DNS(_code):
                      3)
         src_file = h5py.File(src_file_name, 'r')
         if (src_file[src_dset_name].shape == dst_shape):
-            if make_link and (src_file[src_dset_name].dtype == self.ctype):
             dst_file[dst_dset_name] = h5py.ExternalLink(
                     src_file_name,
                     src_dset_name)
-            else:
-                dst_file.create_dataset(
-                        dst_dset_name,
-                        shape = dst_shape,
-                        dtype = self.ctype,
-                        fillvalue = 0.0)
-                for kz in range(src_file[src_dset_name].shape[0]):
-                    dst_file[dst_dset_name][kz] = src_file[src_dset_name][kz]
         else:
             min_shape = (min(dst_shape[0], src_file[src_dset_name].shape[0]),
                          min(dst_shape[1], src_file[src_dset_name].shape[1]),

bfps/__main__.py

@@ -40,7 +40,7 @@ def main():
             version = '%(prog)s ' + bfps.__version__)
     parser.add_argument(
             'base_class',
-            choices = ['DNS', 'PP', 'TEST']
+            choices = ['DNS', 'PP', 'TEST'],
             type = str)
     # first option is the choice of base class or -h or -v
     # all other options are passed on to the base_class instance