August 2024
Intermediate to advanced
1014 pages
26h
Spanish
Content preview from Python fluido, 2ª edición
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Capítulo 4. Texto Unicode frente a Bytes
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Los humanos usamos texto. Los ordenadores hablan bytes.
Esther Nam y Travis Fischer, "Codificación de caracteres y Unicode en Python"1
Python 3 introdujo una clara distinción entre cadenas de texto humano y secuencias de bytes sin procesar. La conversión implícita de secuencias de bytes a texto Unicode es cosa del pasado. Este capítulo trata de las cadenas Unicode, las secuencias binarias y las codificaciones utilizadas para convertir entre ellas.
Dependiendo del tipo de trabajo que hagas con Python, puedes pensar que entender Unicode no es importante. Es poco probable, pero de todos modos no hay forma de escapar a la división entre str y byte. Como extra, descubrirás que los tipos de secuencia binaria especializados proporcionan características que el tipo "multiuso" de Python 2 str no tenía.
En este capítulo, visitaremos los siguientes temas:
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Caracteres, puntos de código y representaciones de bytes
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Características únicas de las secuencias binarias:
bytes,bytearray, ymemoryview -
Codificaciones para Unicode completo y conjuntos de caracteres heredados
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Evitar y tratar los errores de codificación
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Buenas prácticas en el manejo de archivos de texto
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La trampa de codificación por defecto y los problemas de E/S estándar
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Comparaciones de texto Unicode seguras con normalización
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Funciones útiles para normalizar, ...
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