September 2024
Intermediate to advanced
1648 pages
52h 56m
Spanish
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Capítulo 12. Pruebas if y reglas sintácticas
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Este capítulo presenta la sentencia Python if, que es la sentencia principal utilizada para seleccionar acciones alternativas en función de los resultados de las pruebas. Dado que éste es nuestro primer análisis en profundidad de las sentencias compuestas -sentenciasque incluyen otras sentencias-, también exploraremos aquí los conceptos generales del modelo sintáctico de las sentencias de Python con más detalle que en la introducción del Capítulo 10. Dado que la sentencia if introduce la noción de pruebas, este capítulo también tratará las expresiones booleanas, cubrirá la expresión "ternaria" if y completará algunos detalles sobre las pruebas de verdad en general.
si Declaraciones
En términos sencillos, la sentencia Python if selecciona las acciones a realizar. Junto con su homóloga la expresión, es la principal herramienta de selección en Python y representa gran parte de la lógica que posee un programa Python. También es nuestra primera sentencia compuesta. Como todas las sentencias compuestas de Python, la sentencia if puede contener otras sentencias, incluidas otras ifs. De hecho, Python te permite combinar sentencias en un programa de forma secuencial (para que se ejecuten una tras otra), y de forma anidada arbitrariamente (para que se ejecuten sólo bajo determinadas condiciones, como selecciones y bucles).
Formato general ...
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