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Date: Sat, 24 Dec 2011 17:09:57 +0000
Subject: Re: How to check for single character change in a string?
From: Arnaud Delobelle <arnodel@gmail.com>
To: Roy Smith <roy@panix.com>
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On 24 December 2011 16:10, Roy Smith <roy@panix.com> wrote:
> In article <roy-AAAEEA.10571424122011@news.panix.com>,
> =C2=A0Roy Smith <roy@panix.com> wrote:
>
>> >>> len([x for x in zip(s1, s2) if x[0] !=3D x[1]])
>
> Heh, Ian Kelly's version:
>
>> sum(a =3D=3D b for a, b in zip(str1, str2))
>
> is cleaner than mine. =C2=A0Except that Ian's counts matches and the OP a=
sked
> for non-matches, but that's an exercise for the reader :-)

Here's a variation on the same theme:

sum(map(str.__ne__, str1, str2))

--=20
Arnaud