Contract debugging

If your contract is using print in cairo hints (it was compiled with the --disable-hint-validation flag), Devnet will output those lines together with its regular server output. Read more about hints here.

To filter out just your debug lines, redirect stderr to /dev/null when starting Devnet:

starknet-devnet 2> /dev/null

To disable all the python logging you have to explicitly pass PYTHONUNBUFFERED=0:

docker run -p 127.0.0.1:5050:5050 -e PYTHONUNBUFFERED=0 shardlabs/starknet-devnet