1.下载第三方模块（源码）
譬如我们要安装的requests模块https://pypi.python.org/pypi/requests
2.解压然后执行(或者执行命令python setup.py install)
D:360安全浏览器下载 equests-2.10.0 equests-2.10.0>pip3 install requests
You are using pip version 6.0.8, however version 8.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Requirement already satisfied (use --upgrade to upgrade): requests in c:python3
4libsite-packages
equests-2.10.0-py3.4.egg
3.安装完成后重启PyCharm