I received szymon@rfid_teachers:~$ strace ./led_board.py execve("./led_board.py", ["./led_board.py"], [/* 22 vars */]) = 0 brk(NULL) = 0x106f000 uname({sysname="Linux", nodename="rfid_teachers", ...}) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOEN...