Tutoriales básicos de Python

Control de flujo de Python

El método bytearray() devuelve un objeto bytearray que es un array de bytes dados.

La sintaxis del método bytearray() es:

bytearray([fuente[, encoding[, errors]]])

El método bytearray() devuelve un objeto bytearray, que es una secuencia de enteros mutables (pueden modificarse), en el rango 0 <= x <256.

Si desea usar la versión inmutable, utilicebytes()método.

bytearray() tiene tres parámetros opcionales:

source (optional) -The source used to initialize the byte array.
encoding (optional) -If the source is a string, it is the encoding of the string.
errors (optional) -If the source is a string, the action taken when the encoding conversion fails (more information:String encoding)

The bytearray can be initialized using the source parameter in the following ways:

Different source parameters
Type	Description
String	When converting a string to bytes using str.encode(), you must also provideencoding and optionalerrors
Integer	Create an array that provides size, and all arrays are initialized to null
Object	The read-only buffer of the Object object will be used to initialize the byte array
Iterable	Create an array of size equal to the count of the iterable, and initialize it with the elements of the iterable. It must be 0 <= x <256Integer iterable between
No source (arguments)	Create an array of size 0.

The bytearray() method returns a byte array of given size and initial value.

Example

string = "Python is interesting."
# Encoding as “utf-8” string
arr = bytearray(string, 'utf-8')
print(arr)

When running the program, the output is:

bytearray(b'Python is interesting.')

Example

size =　5
arr = bytearray(size)
print(arr)

When running the program, the output is:

bytearray(b'\x00\x00\x00\x00\x00')

Example

rList = [1,　2,　3,　4,　5]
arr = bytearray(rList)
print(arr)

When running the program, the output is:

bytearray(b'\x01\x02\x03\x04\x05')