报错信息 在ubuntu系统下安装pycharm后,下载包时报错: You are using pip version 7.1.0, however version 19.0.3 is available.You should consider upgrading via the 'pip install --upgrade pip' command. 错误原因 报错翻译过来是: 您
原因:版本太低,安装就好了。 ERROR: pyopenssl 19.0.0 has requirement cryptography>=2.3, but you'll have cryptography 2.1.4 which is incompatible.Installing collected packages: ldap3, hyperframe, click, zstanda