Infinite recursion when sending frame

[normaldotcom]

My simple test script fails to transmit and infinitely recurses:

from canard import can
from canard.hw import socketcan
dev = socketcan.SocketCanDev("can0")
dev.start()
req = can.Frame(0x705)
req.dlc = 2
req.data = [0x10, 0x11]
dev.send(req)

When run, this script returns:

  File "/usr/lib/python3.5/site-packages/canard/can.py", line 71, in data
    data_len = min(self.dlc, len(self._data))
  RecursionError: maximum recursion depth exceeded while calling a Python object

The issue appears to be in can.py:

    @property
    def data(self):
        # return bytes up to dlc length, pad with zeros
        data_len = min(self.dlc, len(self._data))
        result = self.data[:data_len]
        result.extended([0] * (8 - data_len))
        return result

I tried changing the result to result = self._data[:data_len] which fixed the recursion, but then errored out on setting the extended property on the next line. After commenting out the extended property line, everything appears to work.

[ghost]

i proposed a patch that should fix it