Re: [PATCH v2 02/16] qapi/expr.py: Check for dict instead of OrderedDict

[Markus Armbruster]

John Snow <jsnow@redhat.com> writes:

> OrderedDict is a subtype of dict, so we can check for a more general form.
>
> Signed-off-by: John Snow <jsnow@redhat.com>
> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
> Reviewed-by: Cleber Rosa <crosa@redhat.com>
> ---
>  scripts/qapi/expr.py | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py
> index 35695c4c653b..5694c501fa38 100644
> --- a/scripts/qapi/expr.py
> +++ b/scripts/qapi/expr.py
> @@ -14,7 +14,6 @@
>  # This work is licensed under the terms of the GNU GPL, version 2.
>  # See the COPYING file in the top-level directory.
>  
> -from collections import OrderedDict
>  import re
>  
>  from .common import c_name
> @@ -131,7 +130,7 @@ def check_if_str(ifcond):
>  
>  
>  def normalize_members(members):
> -    if isinstance(members, OrderedDict):
> +    if isinstance(members, dict):
>          for key, arg in members.items():
>              if isinstance(arg, dict):
>                  continue
> @@ -162,7 +161,7 @@ def check_type(value, info, source,
>      if not allow_dict:
>          raise QAPISemError(info, "%s should be a type name" % source)
>  
> -    if not isinstance(value, OrderedDict):
> +    if not isinstance(value, dict):
>          raise QAPISemError(info,
>                             "%s should be an object or type name" % source)

Plain dict remembers insertion order since Python 3.6, but it wasn't
formally promised until 3.7.  

Can we simply ditch OrderedDict entirely?