Python Ansible 创建 virtualenv
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Ansible creating a virtualenv
提问by user204088
How do you create a virtualenv for a specific python version using ansible. Is there a command in the ansible standard library?
如何使用 ansible 为特定的 Python 版本创建 virtualenv。ansible 标准库中是否有命令？
I would like something like:
我想要类似的东西：
- virtualenv: dest=venv python_version:/usr/bin/python3
回答by Schnouki
回答by toast38coza
I have at times experienced some erratic behaviour with specifying virtualenv_command(e.g.: getting a python 2.7 executable in my virtualenv even though I specified to run the command with virtualenv-3.4.
我有时会在指定时遇到一些不稳定的行为virtualenv_command（例如：即使我指定使用virtualenv-3.4.
If you experience that problem, you cancreate the virtualenv manually with the commandmodule:
如果您遇到该问题，您可以使用该command模块手动创建 virtualenv ：
- name: Manually create the initial virtualenv
command:
cmd: virtualenv /user/home/venvs/myenv -p python3.4
creates: "/user/home/venvs/myenv"
(note: by specifying createsthis command will only run in the case that a virtualenv does not exist at /user/home/venvs/myenv).
（注意：通过指定creates此命令只会在 virtualenv 不存在的情况下运行/user/home/venvs/myenv）。
Then you can install your requirements as normal with the pipcommand:
然后您可以使用以下pip命令正常安装您的需求：
- name: Install requirements
pip:
requirements=/my_app/requirements.txt
virtualenv=/user/home/venvs/myenv
Update
更新
I've found that specifying the virtualenv_python(available in Ansible 2.0+) also seems to work in the case stated above. For example:
我发现指定virtualenv_python（在 Ansible 2.0+ 中可用）似乎也适用于上述情况。例如：
- name: Install requirements
pip:
requirements: /my_app/requirements.txt
virtualenv: /user/home/venvs/myenv
virtualenv_python: python3.4
(with this you shouldn't need to manually create the virtualenv first)
（有了这个，您不需要先手动创建 virtualenv）
回答by Tristan
With ansible 2.0 you can specify a python version for your virtualenv with virtualenv_python
使用 ansible 2.0，您可以为您的 virtualenv 指定一个 python 版本 virtualenv_python
For example:
例如：
- name: Initiate virtualenv
pip: virtualenv="{{ virtualenv_dir }}"
virtualenv_python=python3.4
requirements={{ app_dir }}/requirements.txt
