1. pip 安装总是 time out
pip install jieba
2. 指定 time out 时间,问题依旧
pip --default-timeout=100 install jieba
3. 手动下载
wget https://files.pythonhosted.org/packages/71/46/c6f9179f73b818d5827202ad1c4a94e371a29473b7f043b736b4dab6b8cd/jieba-0.39.zip
4. 进入解包目录安装
python setup.py install