Function to apply superset of arguments to a function

[Mel]

David Stanek wrote:
> On Wed, Sep 9, 2009 at 12:45 PM, Andrey Fedorov<anfedorov at gmail.com>
> wrote:

>> I've written a function [1] called apply_some which takes a set of
>> keywords arguments, filters only those a function is expecting, and
>> calls the function with only those arguments. This is meant to
>> suppress TypeErrors - [ ... ]

> What is your use-case for using this? It seems really odd to me.

I may have run into one possible use.  I have a program that uses DB-API 2.0 
to work with a database, sometimes SQLite3, sometimes PostgreSQL.  Connect 
parameters are built up in a dict from a combination of defaults, 
environment values, and command-line arguments.  This dictionary has to be 
pruned down before calling connect, because sqlite3.connect doesn't take the 
wide assortment of arguments that are needed for PostgreSQL.  The existing 
program does this "by hand", being programmed in advance to know which 
parameters are acceptable to which database module.


        Mel.