安装Scrapy过程中出错：error: Unable to find vcvarsall.bat Python版本2.7.11 系统为win7 32位系统 使用pip install scrapy 然后报错 \test copying twisted\mail\test\server.pem -> build\lib.win32-2.7\twisted\mail\t

系统信息：Ubuntu 15.04 2.6.32-042stab116.2 #1 SMP Fri Jun 24 15:33:57 MSK 2016 x86_64 x86_64 x86_64 GNU/Linux 安装 pip install -r requirements.txt 提示错误 Collecting psycopg2==2.6 (from -r