这是Python REPL的经过验证的示例：
>>> import subprocess
>>> import sys
>>> p = subprocess.Popen([sys.executable, '-c', 'import time; time.sleep(100)'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT); print('finished')
finished
如何通过另一个终端窗口进行验证：
$ ps aux | grep python
输出：
user 32820 0.0 0.0 2447684 3972 s003 S+ 10:11PM 0:00.01 /Users/user/venv/bin/python -c import time; time.sleep(100)
602392714
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