[Python-3000] features i'd like [Python 3000?] ... #4: interpolated strings ala perl

[Barry Warsaw]

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On Dec 6, 2006, at 5:24 AM, Jan Grant wrote:

> PS. IF generic functions (operators) could be sensitive to return  
> types
> and IF python6k supported a complex type inference mechanism (possibly
> including automatic coercion), then one might be able to do something
> like:
>
> def foo(d: sqlDriver):
>   s = "select template goes here" % (param1, param2)
>   r = d.query(s)
>
> where sqlDriver has a method
>
> def query(self, s: some_type_that_signals_sql_interpolation)
>
> and "%" is overloadable on the basis that the return type is  
> determined
> to be compatible with "some_type_that_signals_sql_interpolation".  
> Those
> are some mighty big "IF"s though, and you could still concoct cases
> where things would break :-)

BTW, I believe that most of the SQL wrapper packages for Python  
already provide safe prepared statement like functionality, that is  
convenient to use.

- -Barry

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