Iteration of strings

[Duncan Booth]

Alan Kennedy <alanmk at hotmail.com> wrote in 
news:3DE0DDEA.1B87D457 at hotmail.com:

> I suggest the following amendment:
> 
> import types
> 
> def dont_allow_string_argument(v):
>     assert type(v) not in [types.StringType, types.UnicodeType]

Slightly better to write:

def dont_allow_string_argument(v):
    assert type(v) not in types.StringTypes

Of course that still doesn't catch the case where someone subclassed a 
string type. If you are sufficiently paranoid you might consider:

def dont_allow_string_argument(v):
    for t in types.StringTypes:
       assert not isinstance(v, t)


-- 
Duncan Booth                                             duncan at rcp.co.uk
int month(char *p){return(124864/((p[0]+p[1]-p[2]&0x1f)+1)%12)["\5\x8\3"
"\6\7\xb\1\x9\xa\2\0\4"];} // Who said my code was obscure?