NotImplementedError. Loop for bytearray.

[prem111]

Code: Select all

def escape(msg):
        escaped = bytearray()
        reserved = bytearray(b"\x7E\x7D\x11\x13")

        escaped.append(msg[0])
        for m in msg[1:]:
            if m in reserved:
                escaped.append(0x7D)
                escaped.append(m ^ 0x20)
            else:
                escaped.append(m)
        return escaped

File "<stdin>", line 8, in escape
NotImplementedError:

How can you do?

Thanks for help!

[dhylands]

It looks like using 'in' with a bytearray isn't supported.

If you replace it with:

Code: Select all

reserved = b"\x7E\x7D\x11\x13"

then it seems to work properly.

[prem111]

Thanks for help.

[jimmo]

Thanks for help.

One extra point on this -- although it would have been nice if what you wanted was implemented, it's actually a lot more efficient to use dhylands' suggestion instead, as it does not involve allocating or copying a bytearray every time this function is called.