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How to use _wait_instruments method in ATX

Best Python code snippet using ATX

__init__.py

Source:__init__.py

...58        # subprocess.check_output([self._bootstrap, 'reset'], env=self._env)59        # 2. start instruments60        self._proc = subprocess.Popen([self._bootstrap, 'instruments'], env=self._env, stdout=subprocess.PIPE)61        self.sleep(5.0)62        self._wait_instruments()63    def _wait_instruments(self):64        ret = self._run('1')65        if ret != 1:66            log.error('Instruments stdout:\n' + self._proc.stdout.read())67            raise RuntimeError('Instruments start failed, expect 1 but got %s' % (ret,))68    def _run(self, code):69        # print self._proc.poll()70        # print code71        encoded_code = json.dumps({'command': code})72        output = subprocess.check_output([self._bootstrap, 'run', encoded_code], env=self._env)73        # print output74        try:75            return json.loads(output)76        except:77            print 'unknown json output:', output...

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