Tutoriales básicos de Python

Control de flujo de Python

El método bytes() devuelve un objeto byte inmutable, que se inicializa con el tamaño y los datos dados.

La sintaxis del método bytes() es:

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

El método bytes() devuelve un objeto bytes, que es una secuencia de enteros no fijos (no modificables), con un rango de 0 <= x <256.

Si desea usar la versión variable, utilicebytearray()Method.

bytes() has three optional parameters:

source (optional) -The array used to initialize bytes from the source.
encoding (optional) -The encoding of the string if source is a string.
errors (optional) -The action taken when the encoding conversion fails if source is a string (more information:String encoding)

The source parameter can be used to initialize the byte array in the following ways:

Different source parameters
Type	Description
String	To convert a string to bytes using str.encode(), you must also provideencoding　and optionalError
Integer	Create an array that provides size, and all arrays are initialized to null
Object	The read-only buffer of the 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 bytes() method returns a bytes object with given size and initialization value.

Example

string = "Python is interesting."
# Encoded as “utf-8” of the string
arr = bytes(string, 'utf-8)
print(arr)

When running this program, the output is:

b'Python is interesting.'

Example

size =　5
arr = bytes(size)
print(arr)

When running this program, the output is:

b'\x00\x00\x00\x00\x00'

Example

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

When running this program, the output is:

b'\x01\x02\x03\x04\x05'