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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Aggregates with integer keys","articleBody":"Does `python-dtrace` support using integer keys in aggregates? \r\n\r\nHere is a simple example:\r\n```python\r\nfrom dtrace import DTraceConsumerThread\r\nfrom subprocess import check_output, Popen, PIPE, STDOUT\r\nimport time\r\n\r\nscript = \"\"\"syscall::read:entry /execname == \"dd\"/\r\n{\r\n    @values[arg2] = count();\r\n}\"\"\"\r\ncommand = [\"dd\", \"if=/dev/zero\", \"of=/dev/null\", \"status=none\", \"bs=1M\", \"count=10\"]\r\n\r\nprint(\"Running with dtrace-python\")\r\ndtrace_thread = DTraceConsumerThread(script, sleep=1)\r\ndtrace_thread.start()\r\ncheck_output(command)\r\ndtrace_thread.stop()\r\ndtrace_thread.join()\r\n\r\nprint(\"\\nRunning with command line dtrace\")\r\nwith Popen([\"dtrace\", \"-n\", script], stderr=STDOUT, stdout=PIPE) as proc:\r\n    time.sleep(0.5) # let dtrace start\r\n    check_output(command)\r\n    proc.terminate()\r\n    print(proc.stdout.read().decode())\r\n```\r\n\r\n`python-dtrace` prints:\r\n```\r\n1793 1 [b'/'] 1\r\n1793 1 [b'\\x80'] 1\r\n1793 1 [b''] 10\r\n```\r\n\r\nThe `dtrace` command prints\r\n```\r\n               47                1\r\n              128                1\r\n          1048576               10\r\n```\r\n\r\nIs there some way to recover the integer aggregate keys from the byte strings returned (`b'/'`, `b'\\x80'`, `b''`),  or is this functionality not yet supported?\r\nThanks in advance. \r\n\r\n(I'm using version `0.0.12` installed from master, on FreeBSD 13)","author":{"url":"https://github.com/ictrobot","@type":"Person","name":"ictrobot"},"datePublished":"2021-02-28T16:33:38.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/25/python-dtrace/issues/25"}