python phantomjs 자식 프로세스 안죽는 문제 해결

import signal

driver.service.process.send_signal(signal.SIGTERM) # kill the specific phantomjs child proc
driver.quit()                                      # quit the node proc

참조: https://stackoverflow.com/questions/44995042/phantomjs-raise-oserror-errno-9-bad-file-descriptor