Function segregate

Lib/encodings/punycode.py:10–20

3.1 Basic code point segregation

(str)

##################### Encoding #####################################

def segregate(str):
    """3.1 Basic code point segregation"""
    base = bytearray()
    extended = set()
    for c in str:
        if ord(c) < 128:
            base.append(ord(c))
        else:
            extended.add(c)
    extended = sorted(extended)
    return base.take_bytes(), extended

def selective_len(str, max):
    """Return the length of str, considering only characters below max."""