（二）Locust 安装
虫师 创建于 over 7 years 之前
最后更新: less than a minute 之前
阅读数: 566
Locust 是基于 Python 语言的一个性能测试库，如果要想使用它来做性能测试必须要先安装 Python 。
Python安装，参考
Locust 安装
方式一：通过 pip 命令安装
> pip install locust
Collecting locust
Downloading locust-0.8.tar.gz (225kB)
59% |███████████████████ | 133kB 199kB/s eta 0:00:0
63% |████████████████████▍ | 143kB 304kB/s eta 0:00:
68% |█████████████████████▉ | 153kB 358kB/s eta 0:0
72% |███████████████████████▎ | 163kB 355kB/s eta 0:
77% |████████████████████████▊ | 174kB 421kB/s eta
81% |██████████████████████████▏ | 184kB 449kB/s eta
86% |███████████████████████████▋ | 194kB 439kB/s e
90% |█████████████████████████████ | 204kB 487kB/s
95% |██████████████████████████████▌ | 215kB 492kB/s
99% |████████████████████████████████| 225kB 487kB
100% |████████████████████████████████| 235kB 417k
....
方式二：GitHub下载安装
GitHub项目地址：https://github.com/locustio/locust/
将项目克隆下来，通过Python 执行 setup.py 文件
...\locust> python setup.py install
running install
running bdist_egg
running egg_info
creating locustio.egg-info
writing locustio.egg-info\PKG-INFO
writing dependency_links to locustio.egg-info\dependency_links.txt
writing entry points to locustio.egg-info\entry_points.txt
writing requirements to locustio.egg-info\requires.txt
writing top-level names to locustio.egg-info\top_level.txt
writing manifest file 'locustio.egg-info\SOURCES.txt'
...
最后，检查是否安装成功。打开Windows命令提示符，输入 “locust --help” 回车。
> locust --help
Usage: locust [options] [LocustClass [LocustClass2 ... ]]
Options:
-h, --help show this help message and exit
...
每个参数的含义，将会放到后面介绍。
安装依赖分析
这里想简单介绍 Locust 都基于了哪些库。打开 Locust 安装目录下的 setup.py 文件。查看安装要求：
install_requires=["gevent>=1.1.2", "flask>=0.10.1", "requests>=2.9.1", "msgpack-python>=0.4.2", "six>=1.10.0", "pyzmq==15.2.0"]
gevent 是在 Python 中实现协程的一个第三方库。协程，又称微线程（Coroutine）。使用gevent可以获得极高的并发性能。
flask 是 Python 的一个 Web 开发框架。
Requests 用来做 HTTP 接口测试。
msgpack-python 是一种快速、紧凑的二进制序列化格式，适用于类似JSON的数据。
six 提供了一些简单的工具用来封装 Python2 和 Python3 之间的差异性。
pyzmq 如果你打算运行 Locust 分布在多个进程/机器，建议你安装pyzmq。
当我们在安装 Locust 时，它会检测我们当前的 Python 环境是否已经安装了这些库，如果没有安装，它会先把这些库一一装上。并且对这些库版本有要求，有些是必须等于某版本，有些是大于某版本。我们也可以事先把这些库全部按要求装好，再安装Locust时就会快上许多。
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