PostgreSQL, psycopg2 and OID-less tables

[Jim]

Frank Millman wrote:
> I therefore use the following -
>     cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)
I use this also (although isn't it right that sometimes the name of the
sequence is not so straightforward? for instance, isn't there a limit
on the number of chars?).

Can anyone say what is an advantage of the two nextval() solutions
described earlier in this thread over the currval() solution listed
here?

Jim