micropython/tests/extmod/uhashlib_md5.py

try:
    import uhashlib as hashlib
except ImportError:
    try:
        import hashlib
    except ImportError:
        # This is neither uPy, nor cPy, so must be uPy with
        # uhashlib module disabled.
        print("SKIP")
        raise SystemExit

try:
    hashlib.md5
except AttributeError:
    # MD5 is only available on some ports
    print("SKIP")
    raise SystemExit

md5 = hashlib.md5(b"hello")
md5.update(b"world")
print(md5.digest())