使用Dreamhost上的virtualenv更新新的Django和Python 2.7。*（带乘客）

Question

Dreamhost是小项目的好主人。它也是Django友好的托管。除了python和Django版本之外的一切都有点过时了。好吧，这是一整天的工作来弄清楚如何在dreamhost上更新Python 2.7.3，Django 1.4并且我真的想与找到它的人分享

Answer 1

我目前有私人服务器，一个shell帐户和一点运气。所以这就是我的所作所为：

1. SSH到您的主机升级python

    cd ~
    mkdir tmp
    cd tmp
    wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
    tar zxvf Python-2.7.3.tgz
    cd Python-2.7.3
    ./configure --enable-shared --prefix=$HOME/Python27 --enable-unicode=ucs4
    make
    make install

2. 配置系统以使用我们的新Python。打开〜/ .bashrc并添加以下行

    export PATH="$HOME/Python27/bin:$PATH"
    export LD_LIBRARY_PATH=$HOME/Python27/lib
   
    #save it and run
    source ~/.bashrc

   你现在可以用which python查看你的python版本
3. 安装easy_install，pip

   cd ~/tmp
   wget http://peak.telecommunity.com/dist/ez_setup.py
   python ez_setup.py
   easy_install pip
   # Or even shorter
   wget https://bootstrap.pypa.io/get-pip.py
   python get-pip.py

4. 安装virtualenv

    pip install virtualenv
    virtualenv $HOME/<site>/env
    #Switch to virtualenv
    source $HOME/<site>/env/bin/activate

   你也可以添加env路径到bashrc

    export PATH="$HOME/<site>/env/bin/:$PATH"
    source ~/.bashrc

5. 安装django和其他一切

    pip install django
    pip install ....
    pip install ....
    pip install ....

6. 创建项目

    cd $HOME/<site>/
    python $HOME/<site>/env/bin/django-admin.py startproject project

7. 在passenger_wsgi.py中创建HOME/<site>/，内容如下

    import sys, os
    cwd = os.getcwd()
    sys.path.append(cwd)
    sys.path.append(cwd + '/project')  #You must add your project here or 500
   
    #Switch to new python
    #You may try to replace $HOME with your actual path
    if sys.version < "2.7.3": os.execl("$HOME/<site>/env/bin/python",
        "python2.7.3", *sys.argv)
   
    sys.path.insert(0,'$HOME/<site>/env/bin')
    sys.path.insert(0,'$HOME/<site>/env/lib/python2.7/site-packages/django')
    sys.path.insert(0,'$HOME/<site>/env/lib/python2.7/site-packages')
   
    os.environ['DJANGO_SETTINGS_MODULE'] = "project.settings"
    import django.core.handlers.wsgi
    application = django.core.handlers.wsgi.WSGIHandler()

或者这样

import sys, os

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

sys.path.append(os.path.join(BASE_DIR))  #You must add your project here or 500

#Switch to new python
#You may try to replace $HOME with your actual path
PYTHON_PATH = os.path.join(BASE_DIR, 'env', 'bin', 'python')
if sys.executable != PYTHON_PATH:
    os.execl(PYTHON_PATH, "python2.7.12", *sys.argv)

如果您使用的是django 1.7，请将最后两行替换为

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

8. 享受：D

---

Dreamhost上新版本的python将不再返回sys.executable所以你这是我的passenger_wsgi版本

import sys, os

VIRTUAL_ENV_PYTHON = 'venv-python'  # Python > 2.7.6 dreamhost not return sys.executable
BASE_DIR = os.path.dirname(os.path.abspath(__file__))

def is_venv_python():
    if len(sys.argv) > 0:
        last_item = sys.argv[len(sys.argv)-1]
        if last_item == VIRTUAL_ENV_PYTHON:
            return True
    return False

sys.path.append(os.path.join(BASE_DIR))  #You must add your project here or 500

#Switch to new python

PYTHON_PATH = os.path.join(BASE_DIR, 'env', 'bin', 'python')
if not is_venv_python():
    os.execl(PYTHON_PATH, "python2.7.12", *sys.argv + [VIRTUAL_ENV_PYTHON])

sys.path.insert(0, os.path.join(BASE_DIR, 'env', 'bin'))
sys.path.insert(0, os.path.join(
    BASE_DIR, 'env', 'lib', 'python2.7', 'site-packages'
))

Answer 2

目前Dreamhost更新服务器到Ubuntu 12.04，我有一个错误：

Import Error: <path-to-python>/_io.so undefined symbol: PyUnicodeUCS2_Decode

编译自定义python并运行“python ez_setup.py”之后

解决方案是在步骤1使用--enable-unicode = ucs4编译python

./configure --enable-shared --prefix=$HOME/Python27 --enable-unicode=ucs4