modulefinder.py 文件源码

def _unpack_opargs(code):
    # enumerate() is not an option, since we sometimes process
    # multiple elements on a single pass through the loop
    extended_arg = 0
    n = len(code)
    i = 0
    while i < n:
        op = ord(code[i])
        offset = i
        i = i+1
        arg = None
        if op >= HAVE_ARGUMENT:
            arg = ord(code[i]) + ord(code[i+1])*256 + extended_arg
            extended_arg = 0
            i = i+2
            if op == EXTENDED_ARG:
                extended_arg = arg*65536
        yield (offset, op, arg)

# Modulefinder does a good job at simulating Python's, but it can not
# handle __path__ modifications packages make at runtime.  Therefore there
# is a mechanism whereby you can register extra paths in this map for a
# package, and it will be honored.

# Note this is a mapping is lists of paths.