如何为 Python 安装 yaml 包？
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How do I install the yaml package for Python?
提问by harperville
I have a Python program that uses YAML. I attempted to install it on a new server using pip install yamland it returns the following:
我有一个使用 YAML 的 Python 程序。我尝试使用它在新服务器上安装它pip install yaml，它返回以下内容：
$ sudo pip install yaml
Downloading/unpacking yaml
Could not find any downloads that satisfy the requirement yaml
No distributions at all found for yaml
Storing complete log in /home/pa/.pip/pip.log
How do I install the yaml package for Python? I'm running Python 2.7. (OS: Debian Wheezy)
如何为 Python 安装 yaml 包？我正在运行 Python 2.7。（操作系统：Debian Wheezy）
采纳答案by Bonlenfum
You could try the search feature in pip,
你可以试试 pip 中的搜索功能，
$ pip search yaml
which looks for packages in PyPI with yaml in the short description. That reveals various packages, including PyYaml, yamltools, and PySyck, among others (Note that PySyck docsrecommend using PyYaml, since syck is out of date). Now you know a specific package name, you can install it:
它在简短描述中使用 yaml 在 PyPI 中查找包。这揭示了各种软件包，包括 PyYaml、yamltools 和 PySyck 等（请注意，PySyck 文档建议使用 PyYaml，因为 syck 已过时）。现在你知道了一个特定的包名，你可以安装它：
$ pip install pyyaml
If you want to install python yaml system-wide in linux, you can also use a package manager, like aptitudeor yum:
如果要在 linux 系统范围内安装 python yaml，还可以使用包管理器，例如aptitude或yum：
$ sudo apt-get install python-yaml
$ sudo yum install python-yaml
回答by harperville
pip install pyyaml
pip install pyyaml
If you don't have pip, run easy_install pipto install pip, which is the go-to package installer - Why use pip over easy_install?. If you prefer to stick with easy_install, then easy_install pyyaml
如果您没有 pip，请运行easy_install pip以安装 pip，这是首选软件包安装程序 -为什么要使用 pip 而不是 easy_install？. 如果您更喜欢使用easy_install，那么easy_install pyyaml
回答by tutuDajuju
Update:Nowadays installing is done with pip, but libyaml is still required to build the C extension (on mac):
更新：现在安装是用 pip 完成的，但仍然需要 libyaml 来构建 C 扩展（在 mac 上）：
brew install libyaml
python -m pip install pyyaml
Outdated method:
过时的方法：
For MacOSX (mavericks), the following seems to work:
对于 MacOSX（小牛），以下似乎有效：
brew install libyaml
sudo python -m easy_install pyyaml
回答by bbaassssiiee
pip install PyYAML
If libyaml is not found or compiled PyYAML can do without it on Mavericks.
如果未找到或未编译 libyaml，PyYAML 可以在 Mavericks 上不用它。
回答by Anthon
There are three YAML capable packages. Syck (pip install syck) which implements the YAML 1.0 specification from 2002; PyYAML (pip install pyyaml) which follows the YAML 1.1 specification from 2004; and ruamel.yamlwhich follows the latest (YAML 1.2, from 2009) specification.
有三个支持 YAML 的包。Syck ( pip install syck) 从 2002 年开始实施 YAML 1.0 规范；PyYAML ( pip install pyyaml) 遵循 2004 年的 YAML 1.1 规范；和ruamel.yaml遵循最新的（YAML 1.2，从 2009 年开始）规范。
You can install the YAML 1.2 compatible package with pip install ruamel.yamlor if you are running a modern version of Debian/Ubuntu (or derivative) with:
pip install ruamel.yaml如果您正在运行现代版本的 Debian/Ubuntu（或衍生版本），您可以使用以下命令安装 YAML 1.2 兼容包：
sudo apt-get install python-ruamel.yaml
回答by hbadger
Debian-based systems:
基于 Debian 的系统：
$ sudo aptitude install python-yaml
$ sudo aptitude install python-yaml
or newer for python3
或更新的python3
$ sudo aptitude install python3-yaml
$ sudo aptitude install python3-yaml
回答by Mayank Jaiswal
For me, installing development version of libyaml did it.
对我来说，安装开发版的 libyaml 做到了。
yum install libyaml-devel #centos
apt-get install libyaml-dev # ubuntu
回答by Sergey Belash
"There should be one -- and preferably only one -- obvious way to do it." So let me add another one. This one is more like "install from sources" for Debian/Ubuntu, from https://github.com/yaml/pyyaml
“应该有一种——最好只有一种——明显的方法来做到这一点。” 所以让我再添加一个。这个更像是 Debian/Ubuntu 的“从源代码安装”，来自https://github.com/yaml/pyyaml
Install the libYAML and it's headers:
安装 libYAML 及其标头：
sudo apt-get install libyaml-dev
Downloadthe pyyaml sources:
下载pyyaml源：
wget http://pyyaml.org/download/pyyaml/PyYAML-3.13.tar.gz
Install from sources, (don't forget to activate your venv):
从源代码安装，（不要忘记激活你的 venv）：
. your/env/bin/activate
tar xzf PyYAML-3.13.tar.gz
cd PyYAML-3.13.tar.gz
(env)$ python setup.py install
(env)$ python setup.py test
回答by Ankit Shukla
following command will download pyyaml, which also includes yaml
以下命令将下载pyyaml，其中还包括yaml
pip install pyYaml
回答by Connor
Use strictyamlinstead
使用strictyaml代替
If you have the luxury of creating the yaml file yourself, or if you don't require any of these featuresof regular yaml, I recommend using strictyamlinstead of the standard pyyamlpackage.
如果您有幸自己创建 yaml 文件，或者如果您不需要常规 yaml 的任何这些功能，我建议使用strictyaml而不是标准pyyaml包。
In short, default yaml has some serious flaws in terms of security, interface, and predictability. strictyamlis a subset of the yaml spec that does not have those issues (and is better documented).
简而言之，default yaml 在安全性、接口和可预测性方面存在一些严重的缺陷。strictyaml是 yaml 规范的一个子集，没有这些问题（并且有更好的文档记录）。
You can read more about the problems with regular yaml here
您可以在此处阅读有关常规 yaml 问题的更多信息
OPINION:strictyamlshould be the default implementation of yaml and the old yaml spec should be obsoleted.
意见：strictyaml应该是 yaml 的默认实现，旧的 yaml 规范应该被废弃。
