Thanks Mike, I'll see what I can do.

Simon

On Wed, Jun 16, 2021 at 1:26 PM Mike Bayer <mike...@zzzcomputing.com> wrote:
>
> HI Simon -
>
> I believe that example for now should vendor its own "copy()" function that 
> does what's needed.   the function that's there is already un-doing some of 
> the work of the old copy() method in any case.  I think for history table we 
> need column name, datatype, and maybe nullable constraint.
>
> We can accept PRs for this if this is something you would be interested in, 
> although your contributions to the SQLA mailing list are already many :)
>
>
>
> On Wed, Jun 16, 2021, at 7:15 AM, Simon King wrote:
>
> Hi all,
>
> I'm updating an app from SA 1.3 to 1.4 and getting a SADeprecationWarning:
>
>     The Column.copy() method is deprecated and will be removed in a
> future release. (deprecated since: 1.4)
>
> The code triggering the warning is based on the versioned_history example:
>
> https://docs.sqlalchemy.org/en/14/_modules/examples/versioned_history/history_meta.html
>
> ...and here's the offending function:
>
>     def _col_copy(col):
>         orig = col
>         col = col.copy()
>         orig.info["history_copy"] = col
>         col.unique = False
>         col.default = col.server_default = None
>         col.autoincrement = False
>         return col
>
> For the moment I've switched to calling the private _copy() method
> instead, but is there any recommendation of a better approach?
>
> (I did see the issue at
> https://github.com/sqlalchemy/sqlalchemy/issues/5953 and understand
> why the copy() method was deprecated)
>
> Thanks a lot,
>
> Simon
>
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