Show unicode identifier ranges for Python 3

identifier_ranges.py

"Show unicode identifier ranges."

in_identifier_range = False
for codepoint in range(int('10ffff', 16)):  # Last mapped codepoint is U+10FFFF
    if chr(codepoint).isidentifier() and not in_identifier_range:
        # We are transitioning into a range.
        in_identifier_range = True
        start = codepoint
    elif not chr(codepoint).isidentifier() and in_identifier_range:
        # We are transitioning out of a range.
        in_identifier_range = False
        print('{}-{}: {}'.format(
            hex(start),
            hex(codepoint - 1),
            ''.join((chr(i) for i in range(start, codepoint)))[:60]))