gen-range.py

#!/bin/python3
from os import path
from urllib.request import urlretrieve

classes = ['Lu', 'Ll', 'Lt', 'Lm', 'Lo']
entr = None

if not path.isfile('UnicodeData.txt'):
    urlretrieve('https://www.unicode.org/Public/UNIDATA/UnicodeData.txt', 'UnicodeData.txt')

with open('UnicodeData.txt') as ud:
    entr = [ln.rstrip('\n') for ln in ud]

cps = [cdp.split(';')[0] for cdp in entr if cdp.split(';')[2] in classes]

last = 0
br = 0
for cp in cps:
    nxt = int(cp, 16)
    if last == 0:
        last = nxt
        br = nxt
        continue

    if last + 1 != nxt:
        if br == last:
            print('U+{}'.format(format(br, '05X')))
        else:
            print('U+{}...U+{}'.format(format(br,'05X'),format(last, '05X')))
        br = nxt
    last = nxt