pip install gunicorn==19.7.1

[chenqy2018]

你好，安装是错了，想问下怎么回事？有什么系统要求吗？ $ sudo pip install gunicorn==19.7.1 Traceback (most recent call last): File "/usr/local/bin/pip", line 7, in from pip._internal import main ImportError: No module named _internal