bytearray()
bytearray() is a Python function in the Built-in Functions category. Returns a mutable array of bytes. The syntax is bytearray(source=b""). Parameters: source — string, bytes, or iterable. Returns: Bytearray object. A typical example: ba = bytearray(b"hello")
ba[0] = 72 # Modify in place
ba # bytearray(b"Hello"). A close sibling is print(), which prints objects to the text stream, separated by `sep` and followed by `end`. A close sibling is len(), which returns the length (number of items) of an object. Works with sequences, collections, and strings. A close sibling is range(), which returns an immutable sequence of numbers. Commonly used in for loops. A close sibling is type(), which returns the type of an object, or creates a new type with three arguments. More about this category: Python's built-in functions available without importing — print, len, range, map, and more. For a broader walkthrough, read the Built-in Functions guide.