ddtrace_run.py 文件源码

def main():
    if len(sys.argv) < 2 or sys.argv[1] == "-h":
        print(USAGE)
        return

    log.debug("sys.argv: %s", sys.argv)

    root_dir = _ddtrace_root()
    log.debug("ddtrace root: %s", root_dir)

    bootstrap_dir = os.path.join(root_dir, 'bootstrap')
    log.debug("ddtrace bootstrap: %s", bootstrap_dir)

    _add_bootstrap_to_pythonpath(bootstrap_dir)
    log.debug("PYTHONPATH: %s", os.environ['PYTHONPATH'])
    log.debug("sys.path: %s", sys.path)

    executable = sys.argv[1]

    # Find the executable path
    executable = spawn.find_executable(executable)
    log.debug("program executable: %s", executable)

    os.execl(executable, executable, *sys.argv[2:])