无法建立轮子/“错误:包含环境变量为空" [英] Failure to build wheel / "Error: INCLUDE Environment Variable is empty"

问题描述

我正在使用Python 2.7.11并试图pip安装模块，但是其中一些失败了.我收到的消息是无法为'X'构造滚轮"和错误:INCLUDE环境变量为空".

I am using Python 2.7.11 and am trying to pip install modules however a few of them are failing. The message I get is "Failure to build wheel for 'X'" and "Error: INCLUDE Environment Variable is empty".

我尝试安装Scrapy，LXML和Twisted，但均失败.我尝试安装的其他一些随机模块也很好.

I tried to install Scrapy, LXML and Twisted and those failed. Some other random modules I tried installed fine.

我已经安装了pyOpenSSL，并向环境中添加了python27和python27/scripts.

I have installed pyOpenSSL, added python27 and python27/scripts to environment.

谢谢

推荐答案

我尝试了两种提供的解决方案，都没有用.

I tried both the solutions offered, none worked.

我安装了适用于Python 2.7的Microsoft Visual C ++编译器，并下载了这里.然后运行:

I installed Microsoft Visual C++ Compiler for Python 2.7, download it here. Then run:

pip install scrapy

对我有用

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