編寫織物文件來安裝包裝的新手

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。我想在該環境中安裝pip。但是腳本運行後，請求不會安裝在virtualenv中。爲什麼？ Q2302。我被要求提供主機信息（以下也是Q1的日誌）。如果我的目標是在當地運行，是否有更好的方法來處理這個問題？編寫織物文件來安裝包裝的新手

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

我可以在一個run命令安裝軟件包。有沒有更好的方法來做到這一點？

謝謝。

這裏是更新的代碼：

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

來源

2012-07-05 user423455