编写织物文件来安装包装的新手

from fabric.api import sudo, put, run 

def install(): 
    run('source /home/user/.virtualenvs/demo/bin/activate') 
    run('pip install requests') 

if __name__ == '__main__': 
    install() 
# to run this, do fab fabfile

Q1。我想在该环境中安装pip。但是脚本运行后，请求不会安装在virtualenv中。为什么？ Q2302。我被要求提供主机信息（以下也是Q1的日志）。如果我的目标是在当地运行，是否有更好的方法来处理这个问题？编写织物文件来安装包装的新手

No hosts found. Please specify (single) host string for connection: localhost 
[localhost] run: source /home/user/.virtualenvs/demo/bin/activate 
[localhost] Passphrase for private key: 
[localhost] Login password: 
[localhost] run: pip install requests 
[localhost] out: Requirement already satisfied (use --upgrade to upgrade): requests in /usr/local/lib/python2.7/dist-packages 
[localhost] out: Requirement already satisfied (use --upgrade to upgrade): certifi>=0.0.7 in /usr/local/lib/python2.7/dist-packages (from requests) 
[localhost] out: Requirement already satisfied (use --upgrade to upgrade): oauthlib>=0.1.0,<0.2.0 in /usr/local/lib/python2.7/dist-packages (from requests) 
[localhost] out: Requirement already satisfied (use --upgrade to upgrade): chardet>=1.0.0 in /usr/lib/python2.7/dist-packages (from requests) 
[localhost] out: Requirement already satisfied (use --upgrade to upgrade): rsa in /usr/local/lib/python2.7/dist-packages (from oauthlib>=0.1.0,<0.2.0->requests) 
[localhost] out: Requirement already satisfied (use --upgrade to upgrade): pyasn1>=0.0.13 in /usr/local/lib/python2.7/dist-packages (from rsa->oauthlib>=0.1.0,<0.2.0->requests) 
[localhost] out: Cleaning up... 
[localhost] out:

更新

我可以在一个run命令安装软件包。有没有更好的方法来做到这一点？

谢谢。

这里是更新的代码：

from fabric.api import sudo, put, run 
from fabric.context_managers import prefix 

def install(): 
    with prefix('source /home/user/.virtualenvs/demo/bin/activate'): 
     run('pip install requests') 

if __name__ == '__main__': 
    install()

http://docs.fabfile.org/en/1.2.0/api/core/context_managers.html?highlight=prefix#fabric.context_managers.prefix

来源

2012-07-05 user423455