hash.update()
hash.update() is a Python method in the Hashlib Module category. Updates the hash object with bytes data. Can be called multiple times. The syntax is hash.update(data). Parameters: data — bytes. Returns: None. A typical example: h = hashlib.sha256()
h.update(b"hello ")
h.update(b"world")
h.hexdigest() # Same as sha256(b"hello world"). A close sibling is hashlib.md5(), which creates an MD5 hash object for the given data. A close sibling is hashlib.sha1(), which creates a SHA-1 hash object (deprecated for security use). A close sibling is hashlib.sha256(), which creates a SHA-256 hash object — widely used for secure hashing. A close sibling is hashlib.sha512(), which creates a SHA-512 hash object with larger digest size (512 bits). More about this category: Secure hash and message digest algorithms — MD5, SHA-1, SHA-256, BLAKE2. For a broader walkthrough, read the Hashlib Module guide. Related Hashlib Module entries: hashlib.md5(), hashlib.sha1(), hashlib.sha256(), hashlib.sha512(), hashlib.sha3_256(), hashlib.blake2b().