ODOO 源代码安装要求
ref：http://www.odoo.com/documentation/10.0/setup/install.html#setup-install-source
python 版本是2.7.9
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Note
if Python is already installed, make sure it is 2.7.9, previous versions are less convenient and 3.x versions are not compatible with Odoo
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还需要安装一些依赖包 都在requirements.txt里面
windows 下可以通过 psycopg来安装
TODO：数据库如何创建？