在执行Python的altinstall时安装分发

Question

我在CentOS 5.8上执行Python 2.7.3的altinstall，并且我想分发给出pip和所有爵士乐。但是，我无法理解正确的过程，并且分发的安装脚本给我带来了错误。

命令的当前顺序：（最终将被用于我的一个项目中的安装脚本）

sudo yum groupinstall "Development tools" 
sudo yum install {zlib,bzip2,openssl,ncurses}-devel 

cd /tmp && mkdir python273 && cd python273 
wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2 
tar -xf Python-2.7.3.tar.bz2 
cd Python-2.7.3 

./configure --prefix=/usr/local --enable-shared 
make 
sudo make altinstall # installs to /usr/local/{bin,lib} 

# Fix path to shared lib - http://stackoverflow.com/a/7880519/1076493 
echo "/usr/local/lib" | sudo tee -a /etc/ld.so.conf > /dev/null 
sudo ldconfig 

# Distribute 
wget http://python-distribute.org/distribute_setup.py 
sudo python2.7 distribute_setup.py 

# Done, install whatever interesting packages I want + clean up 
sudo pip install virtualenv yolk bpython 
rm -rf /tmp/python273 

但是我得到试图运行distribute_setup.py时拒绝“权限”，甚至尽管它与sudo一起运行。在root shell中执行它时工作正常。我猜测这个脚本并不尊重最初在制作子过程时使用的UID。

这让我感到惊讶;这是正确的顺序进行Python（2.7.3）的altinstall与分布？或者仅仅是分发安装脚本不尊重给定的UID？如果脚本是问题，我将如何使用sudo来运行它，因为我不希望我的设置需要root shell？

$ sudo python2.7 distribute_setup.py        
Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.35.tar.gz 
Extracting in /tmp/tmpE9UJke                
Now working in /tmp/tmpE9UJke/distribute-0.6.35           
Installing Distribute                 
Traceback (most recent call last):              
    File "distribute_setup.py", line 546, in <module>          
    sys.exit(main())                  
    File "distribute_setup.py", line 543, in main           
    return _install(tarball, _build_install_args(options))        
    File "distribute_setup.py", line 87, in _install          
    if not _python_cmd('setup.py', 'install', *install_args):       
    File "distribute_setup.py", line 37, in _python_cmd         
    return subprocess.call(args) == 0             
    File "/usr/local/lib/python2.7/subprocess.py", line 493, in call      
    return Popen(*popenargs, **kwargs).wait()           
    File "/usr/local/lib/python2.7/subprocess.py", line 679, in __init__     
    errread, errwrite)                 
    File "/usr/local/lib/python2.7/subprocess.py", line 1249, in _execute_child   
    raise child_exception                
OSError: [Errno 13] Permission denied 

Answer 1

我在这里有上RHEL5.8一个非常类似的设置，我得到相同的权限被拒绝的异常当我执行：

$ sudo python2.7 distribute_setup.py 

的问题通过使用绝对路径解决：

$ sudo /usr/local/bin/python2.7 distribute_setup.py 

根本问题是根帐户在其PATH中没有/ usr/local/bin。

---

事实上distribute_setup.py试图通过重新使用与sys.executable和subprocess.call当前Python解释器调用一个python子命令，如果你想这样一步一步：

$ sudo python2.7 -c "import sys; print sys.executable" 

$ sudo /usr/local/bin/python2.7 -c "import sys; print sys.executable" 
/usr/local/bin/python2.7 

Permission denied错误是有点误导，但它是由试图执行一个空文件名引起的：

$ python2.7 -c "import subprocess; subprocess.call([''])" 
[...] 
OSError: [Errno 13] Permission denied