Bytes Objects - CPython

Overview

Bytes objects represent sequences of bytes (integers 0-255). They are immutable.

Type Object

PyTypeObject PyBytes_Type

Type Checking

int PyBytes_Check(PyObject *o)
int PyBytes_CheckExact(PyObject *o)

Creating Bytes

PyObject* PyBytes_FromString(const char *v)
PyObject* PyBytes_FromStringAndSize(const char *v, Py_ssize_t len)

Example:

PyObject *data = PyBytes_FromString("binary\\x00data");
PyObject *buf = PyBytes_FromStringAndSize(buffer, buffer_len);

Accessing Bytes

char* PyBytes_AsString(PyObject *o)
Py_ssize_t PyBytes_Size(PyObject *o)

Example:

char *data = PyBytes_AsString(bytes_obj);
Py_ssize_t size = PyBytes_Size(bytes_obj);

for (Py_ssize_t i = 0; i < size; i++) {
    printf("%02x ", (unsigned char)data[i]);
}

See Also

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