constructors for lists and tuples

[Dr. Des Small]

nbecker at fred.net (N Becker) writes:

> what are the constructors for lists and tuples? 

[] and () respectively.

> I wanted to make a
> list of a known size and then populate it.  Based on my experience
> with C++ and STL, I expected to find a constructor that took a
> size. 

Python isn't C++, thankfully.  What you want is
<transcript>
>>> foo=10*[None] 
>>> foo
[None, None, None, None, None, None, None, None, None, None]
>>> foo[0] = 'a'
>>> foo
['a', None, None, None, None, None, None, None, None, None]
</transcript>

Des.
-- 
Dr Des Small, Scientific Programmer,
School of Mathematics, University of Bristol,
Tel: 0117 9287984