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Resolución De ExpedientesX De Código

Hoy me he topado con algo bastante gracioso que puede liarte unos minutos:

python
>>> import re
>>> a='owjf oasijf aw0oifj osfij 4.4.4.4 oasidjfowefij 192.168.1.1'


ok, pues ahora copy-pasteais cada una de estas:
re.findall('[0-9]̣̣',a)
re.findall('[0-9]',a)

Son exactamente iguales, pero si paseteais una da resultados diferente a si pasteais la otra :)

Pasteamos la primera:
>>> re.findall('[0-9]̣̣',a)
[]

Pasteamos la segunda:
>>> re.findall('[0-9]',a)
['0', '4', '4', '4', '4', '1', '9', '2', '1', '6', '8', '1', '1']


o_O, he repasado caracter a caracter y son visualmente iguales, si mirais en un editor hexa vereis que realmente no lo son, lógicamente no se trata de un expedienteX.

La cuestion es que según la fuente que tengais, debajo de la comilla o debajo del ] hay un punto microscópico :)

Esto es como cuando me emparanoie de que gmail cuando llevas un rato escribiendo un email y se hace auto-save, aparece una especie de acento raro en la pantalla :)

En estos casos, la metodología tipica de copypastear un trozo de la primera sentencia con el resto de la segunda sentencia, te lleva a los 2 caracteres que varían, pero no aprecias (segun la fuente que tengas) la diferéncia.



6572 662e 6e69 6164 6c6c 2728 305b 392d cc5d cca3 27a3 612c 0a29
6572 662e 6e69 6164 6c6c 2728 305b 392d 275d 612c 0a29

Son dígitos unicode, sabe Dios de que pais, y sabe Dios también como los escribí con mi teclado,
se me ocurren bromas de código fuente que se pueden hacer con esto :D, pero vamos, si tenemos metodología de reaccién ante expedientesX, sobretodo aquello de divide y vencerás dicotómico, en pocos minutos se resuelven este tipo de problemas.

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