[Python-ideas] IntFlags

[Neil Girdhar]

Actually, it would be cool to support nesting too, e.g.,

class SubPermissions(IntFields):
    read = 0
    write = 1
    exec_ = 2

class Permissions(IntFields):
    owner_flags = range(3), SubPermissions
    group_flags = range(3, 6), SubPermissions
    user_flags = range(6, 9), SubPermissions

    regular_file = range(9), 0o755
    character_file = range(9), 0o664
    directory = range(9), 0o600
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