a -very- case sensitive search

[John Machin]

Dustan wrote:
> Steven D'Aprano wrote:
> > On Sat, 25 Nov 2006 13:39:55 -0800, Ola K wrote:
> >
> > > Hi,
> > > I am pretty new to Python and I want to make a script that will search
> > > for the following options:
> > > 1) words made of uppercase characters -only- (like "YES")
> > > 2) words made of lowercase character -only- (like "yes")
> > > 3) and words with only the first letter capitalized (like "Yes")
> > > * and I need to do all these considering the fact that not all letters
> > > are indeed English letters.
> > >
> > > I went through different documention section but couldn't find a right
> > > condition, function or method for it.
> >
> > At the command prompt:
> >
> >
> > >>> dir('')
> > # result edited for clarity
> > [ ... 'isalnum', 'isalpha', 'isdigit', 'islower',
> > 'isspace', 'istitle', 'isupper',  ... ]
> >
> > Then do this:
> >
> > >>> help(''.islower)
> >
> > and read the text it provides. Then experiment on the command line:
> >
> > >>> 'abcd1234'.islower()
> > True
> > >>> 'aBcd1234'.islower()
> > False
>
> Forget what I said; I didn't know about the str.is* methods.

... or about the unicode.is* [same bunch of] methods, which may
possibly address the OP's
"not all letters are indeed English letters" concerns. If he's stuck
with 8-bit str objects, he may need to ensure the locale is set
properly, as vaguely hinted at in the docs that Steven pointed him to.

Cheers,
John