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问题：如何安装适用于Python的yaml软件包？
回答 0
回答 1
回答 2
回答 3
回答 4
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回答 7
回答 8
使用strictyaml代替
Use strictyaml instead
回答 9

问题：如何安装适用于Python的yaml软件包？

我有一个使用YAML的Python程序。我尝试使用将其安装在新服务器上pip install yaml，并且返回以下内容：

$ 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

如何安装适用于Python的yaml软件包？我正在运行Python 2.7。（作业系统：Debian Wheezy）

点击查看英文原文

I have a Python program that uses YAML. I attempted to install it on a new server using pip install yaml and it returns the following:

$ 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)

回答 0

您可以尝试点子搜索功能， 

$ pip search yaml

它在简短说明中使用yaml在PyPI中查找软件包。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）。现在您知道了特定的软件包名称，可以安装它：

$ pip install pyyaml

如果要在linux系统范围内安装python yaml，也可以使用软件包管理器，例如aptitude或yum：

$ sudo apt-get install python-yaml
$ sudo yum install python-yaml
点击查看英文原文

You could try the search feature in pip, 

$ 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including PyYaml, yamltools, and PySyck, among others (Note that PySyck docs recommend using PyYaml, since syck is out of date). Now you know a specific package name, you can install it:

$ pip install pyyaml

If you want to install python yaml system-wide in linux, you can also use a package manager, like aptitude or yum:

$ sudo apt-get install python-yaml
$ sudo yum install python-yaml

回答 1

pip install pyyaml

如果没有pip，请运行easy_install pip安装pip，这是必备的软件包安装程序- 为什么在easy_install上使用pip？。如果您喜欢坚持使用easy_install，则easy_install pyyaml

点击查看英文原文

pip install pyyaml

If you don’t have pip, run easy_install pip to 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

回答 2

更新：如今，安装已通过pip完成，但仍需要libyaml来构建C扩展（在Mac上）：

brew install libyaml
python -m pip install pyyaml

过时的方法：

对于MacOSX（小牛），以下方法似乎有效：

brew install libyaml
sudo python -m easy_install pyyaml
点击查看英文原文

Update: Nowadays installing is done with pip, but libyaml is still required to build the C extension (on mac):

brew install libyaml
python -m pip install pyyaml

Outdated method:

For MacOSX (mavericks), the following seems to work:

brew install libyaml
sudo python -m easy_install pyyaml

回答 3

pip install PyYAML

如果找不到libyaml或编译的PyYAML可以在Mavericks上不使用它。

点击查看英文原文 
pip install PyYAML

If libyaml is not found or compiled PyYAML can do without it on Mavericks.

回答 4

有三个支持YAML的软件包。Syck（pip install syck），从2002年开始实施YAML 1.0规范；pip install pyyaml遵循2004年的YAML 1.1规范的PyYAML（）；和ruamel.yaml下面的最新（YAML 1.2，从2009年）规范。

您可以使用以下命令安装YAML 1.2兼容软件包，pip install ruamel.yaml或者如果您正在运行Debian / Ubuntu（或衍生版本）的现代版本，则可以使用：

sudo apt-get install python-ruamel.yaml
点击查看英文原文

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.yaml which follows the latest (YAML 1.2, from 2009) specification.

You can install the YAML 1.2 compatible package with pip install ruamel.yaml or if you are running a modern version of Debian/Ubuntu (or derivative) with:

sudo apt-get install python-ruamel.yaml

回答 5

基于Debian的系统：

$ sudo aptitude install python-yaml

或更高版本的python3

$ sudo aptitude install python3-yaml

点击查看英文原文

Debian-based systems:

$ sudo aptitude install python-yaml

or newer for python3

$ sudo aptitude install python3-yaml

回答 6

以下命令将下载pyyaml，其中还包括yaml

pip install pyYaml
点击查看英文原文

following command will download pyyaml, which also includes yaml

pip install pyYaml

回答 7

“应该有一种-最好只有一种-显而易见的方法。” 因此，我再添加一个。这更像是Debian / Ubuntu的“从源代码安装”，来自https://github.com/yaml/pyyaml

安装libYAML及其标头：

sudo apt-get install libyaml-dev

下载 pyyaml来源：

wget http://pyyaml.org/download/pyyaml/PyYAML-3.13.tar.gz

从源代码安装（不要忘记激活您的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
点击查看英文原文

“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

Install the libYAML and it’s headers:

sudo apt-get install libyaml-dev

Download the pyyaml sources:

wget http://pyyaml.org/download/pyyaml/PyYAML-3.13.tar.gz

Install from sources, (don’t forget to activate your 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 8

使用strictyaml代替

如果您可以自行创建yaml文件，或者不需要常规yaml的任何这些功能，则建议使用而不是标准pyyaml软件包。

简而言之，默认yaml在安全性，接口和可预测性方面存在一些严重缺陷。strictyaml是yaml规范的一个子集，没有这些问题（并且有更好的记录）。

您可以在这里阅读更多有关常规Yaml问题的信息

意见： strictyaml应为yaml的默认实现，而旧的yaml规范应作废。

点击查看英文原文

Use strictyaml instead

If you have the luxury of creating the yaml file yourself, or if you don’t require any of these features of regular yaml, I recommend using instead of the standard pyyaml package.

In short, default yaml has some serious flaws in terms of security, interface, and predictability. strictyaml is a subset of the yaml spec that does not have those issues (and is better documented).

You can read more about the problems with regular yaml here

OPINION: strictyaml should be the default implementation of yaml and the old yaml spec should be obsoleted.

回答 9

对我来说，安装libyaml的开发版本即可。 

yum install libyaml-devel         #centos
apt-get install libyaml-dev       # ubuntu
点击查看英文原文

For me, installing development version of libyaml did it. 

yum install libyaml-devel         #centos
apt-get install libyaml-dev       # ubuntu
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