cantools | CAN bus tools. -

Whenever I try to pip install cantools==34.0.0 (on python 2.7) i receive the error:

I'm using the Python cantools library to extract the messages from a CAN dbc file and the data type returned looks like this:

message('Message_10', 0x146, False, 8, None),

I need to extract the 2nd value, 0x146 and the message name can change in length so a standard string slice won't consistently work.

My first idea was to convert message('Message_10', 0x146, False, 8, None), into a string and then remove everything that doesn't start with 0x but I suspect there is a better way.

The purpose of this is to pull all of the CAN IDs from a DBC file and create a dictionary with each can ID number as a Key. Then monitor the CAN bus and update the each value in the directory with the data payload associated with each CAN ID on the CAN bus.

Here is a snippet of my code where I originally tried to just extract the message name, which worked but I need the message ID, 0x146, as the Key in my dictionary to compare with as I look at incoming on the bus

Anyone have any idea how to accomplish this?

I am trying to reduce the time taken to apply a complex function from the cantools library on each row within a dataframe (up to 2 million rows): Timestamp Type ID Data 0 16T122109957 0 522 b'0006' 1 16T122109960 0 281 b'0000ce52d2290000' 2 16T122109960 0 279 b'0000000000000000' 3 16T122109960 0 304 b'0000' 4 16T122109961 0 277 b'400000'

Using the above dataframe and a dbc file read in. A dbc file is a set of rules on how to encode/decode data.

Using DataFrame apply can take up to 10 minutes: