[BioPython] Re: sequence class

[Iddo Friedberg]

On Tue, 11 Jan 2000, Cayte wrote:

: In  the Seq object by Andrew Dalke and Itto Friedberg.  I was wondering,
: why does the _call_ return a list of letters instead of a string?I imagine
: most users would want text?
: 

Actually, I meant for it to return a sequence object, which also includes
the sequence as a list of characters. I hold that a mutable data type for
the sequence is better, for reasons of easy sequence manipulations using
fundamental Python tools.  Andrew suggested that a string should be
better, for reasons of string immutability, memory efficiency, and
reduction of fundamental data types.

This is further elaborated upon in the Oct 1999 discussions, under the
"[BioPython] Sequence numbering. Moving on..." headers.

http://www.biopython.org/pipermail/biopython/

Cheers,

Iddo

--

/* --- */main(c){float t,x,y,b=-2,a=b;for(;b-=a>2?.1/(a=-2):0,b<2;
/*  |  */putchar(30+c),a+=.0503) for(x=y=c=0;++c<90&x*x+y*y<4;y=2*
/*  |  */x*y+b,x=t)t=x*x-y*y+a;}
/* --- ddo Friedberg */