pip install appium-python-client

pip install appium-python-client 是一个命令，用于安装 Appium Python 客户端库。这个库可以让你在 Python 中使用 Appium 进行自动化测试。如果你想使用 Appium 进行移动应用自动化测试，可以先安装 Appium 和 Python，然后使用这个命令安装 appium-python-client 库。

相关问题

pip install Appium-Python-Client 安装成功显示什么

如果 Appium-Python-Client 安装成功，应该会显示以下内容：

Collecting Appium-Python-Client
  Downloading Appium_Python_Client-1.2.0-py3-none-any.whl (55 kB)
     |████████████████████████████████| 55 kB 2.9 MB/s 
Requirement already satisfied: urllib3 in /usr/local/lib/python3.7/dist-packages (from Appium-Python-Client) (1.24.3)
Requirement already satisfied: requests in /usr/local/lib/python3.7/dist-packages (from Appium-Python-Client) (2.23.0)
Requirement already satisfied: six in /usr/local/lib/python3.7/dist-packages (from Appium-Python-Client) (1.15.0)
Requirement already satisfied: idna<3,>=2.5 in /usr/lib/python3/dist-packages (from requests->Appium-Python-Client) (2.6)
Requirement already satisfied: chardet<4,>=3.0.2 in /usr/lib/python3/dist-packages (from requests->Appium-Python-Client) (3.0.4)
Requirement already satisfied: certifi>=2017.4.17 in /usr/lib/python3/dist-packages (from requests->Appium-Python-Client) (2018.1.18)
Installing collected packages: Appium-Python-Client
Successfully installed Appium-Python-Client-1.2.0

这表明 Appium-Python-Client 已经成功安装，并且它的依赖项（urllib3、requests、six）也已经安装。

为什么输入pip install Appium-Python-Client，会下两个版本

可能是因为该库有多个版本可用，或者是因为你的Python环境中已经安装了该库的不同版本。当你输入"pip install Appium-Python-Client"时，pip会搜索包含该库的默认Python软件源，并下载最新版本。如果你希望安装特定版本的库，可以在命令后面添加版本号，例如"pip install Appium-Python-Client==0.49"。如果你想查看你已经安装了哪个版本的库，可以在Python中使用"pip list"命令。