import dis import array import collections try: import html except ImportError: html = None from setuptools.extern import six from setuptools.extern.six.moves import html_parser __metaclass__ = type OpArg = collections.namedtuple('OpArg', 'opcode arg') class Bytecode_compat: def __init__(self, code): self.code = code def __iter__(self): """Yield '(op,arg)' pair for each operation in code object 'code'""" bytes = array.array('b', self.code.co_code) eof = len(self.code.co_code) ptr = 0 extended_arg = 0 while ptr < eof: op = bytes[ptr] if op >= dis.HAVE_ARGUMENT: arg = bytes[ptr + 1] + bytes[ptr + 2] * 256 + extended_arg ptr += 3 if op == dis.EXTENDED_ARG: long_type = six.integer_types[-1] extended_arg = arg * long_type(65536) continue else: arg = None ptr += 1 yield OpArg(op, arg) Bytecode = getattr(dis, 'Bytecode', Bytecode_compat) unescape = getattr(html, 'unescape', None) if unescape is None: # HTMLParser.unescape is deprecated since Python 3.4, and will be removed # from 3.9. unescape = html_parser.HTMLParser().unescape