在执行Python的altinstall时安装Distribute

Question

我在CentOS 5.8上做了一个Python 2.7.3,我想要分发给pip和所有爵士乐.但是,我无法理解正确的过程,分发的安装脚本给了我错误.

命令的当前顺序:(最终将是用于我的项目的设置脚本)

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

然而,当我试图运行时,我得到"许可被拒绝"distribute_setup.py,即使它是用sudo运行的.在root shell中执行它时工作正常.我猜这个脚本不尊重最初在制作子进程或其他东西时使用的UID.

这让我很奇怪; 这是使用发布版本的Python(2.7.3)的正确顺序吗？或者仅仅是分发设置脚本不尊重给定的UID？如果脚本是问题,我将如何使用sudo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RHEL5.8上有一个非常类似的设置,当我执行时,我得到了相同的权限被拒绝异常:

$ sudo python2.7 distribute_setup.py

通过使用绝对路径解决了该问题:

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

根本问题只是root帐户的PATH中没有/ usr/local/bin.

事实上,distribute_setup.py试图通过重新使用与当前Python解释器调用一个python子sys.executable和subprocess.call,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

权限被拒绝错误有点误导,但它是由尝试执行空文件名引起的:

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