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如何在 pocket option 中注册

PyPI(The Python Package Index,Python包索引)是 Python 编程语言的软件存储库。通常,我们就是从这上面安装各种 Python 的包,也可以在上面发布自己的包。
The Python Packaging Authority (PyPA) is a working group that maintains many of the relevant projects in Python packaging.

如何在 pocket option 中注册

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Python 之 pip安装 及 使用详解

ZC·Shou 于 2018-12-14 13:59:34 发布 208021 收藏 450

pip 是啥

pip 是 Python 的包安装程序。其实,pip 如何在 pocket option 中注册 就是 Python 标准库(The Python Standard Library)中的一个包,只是这个包比较特殊,用它可以来管理 Python 标准库(The Python Standard Library)中其他的包。pip 支持从 PyPI,版本控制,本地项目以及直接从分发文件进行安装。pip 是一个命令行程序。 安装 pip 后,会向系统添加一个 pip 命令,该命令可以从命令提示符运行。
目前,pip 是 The Python Packaging Authority (PyPA) 推荐的 Python 包管理工具!英文比较好的同学可以直接去官网参看其用户手册

PyPI(The Python Package Index,Python包索引)是 Python 编程语言的软件存储库。通常,我们就是从这上面安装各种 Python 的包,也可以在上面发布自己的包。
The Python Packaging Authority (PyPA) is a working group that maintains many of the relevant projects in Python packaging.

从 Python 2 版本 >=2.7.9 或 Python 3 版本 >=3.4 开始,官网的安装包中已经自带了 pip,在安装时用户可以直接选择安装。或者如果使用由 virtualenv 或者 pyvenv 创建的 Virtual Environment,那么 pip 也是被默认安装的。
如果没有在安装的时候,选择上安装pip,那么也可以从本地安装。例如,直接使用 get-pip.py 进行安装。首先从官网下载 get-pip.py ,然后直接运行 python get-pip.py 即可。

安装后,在命令行中键入: pip + 回车,就会出现如下使用说明:

install

命令行直接键入 pip install + 回车,则 出现如下提示: ERROR: You must give at least one requirement to install (see "pip help install") 。接着我们键入 pip help install ,就会出现 pip install 的使用说明了,如下:

上面一大堆,总结来说,安装命令就是: pip install 或 pip install -r requirements.txt (对于本地安装包可以指定路径)。唯一需要特殊说明的是,安装时可以指定版本号来安装,举例如下:

uninstall

卸载安装包命令: pip uninstall 或 pip uninstall -r requirements.txt

pip install -U 或:pip install 如何在 pocket option 中注册 --upgrade

freeze

pip freeze 查看已经安装的包及版本信息。导出到指定文件中。例如, pip freeze > requirements.txt ,文件名称随意;也可以使用 pip install -r requirements.txt ,两者等效。

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列出当前已经安装的包。使用命令 pip list -o 则可查询可升级的包。

在这里插入图片描述

显示包所在目录及信息,格式为: pip show 。如果不加包名,则提示 ERROR: Please provide a package name or names. 。

search

在这里插入图片描述

搜索包,格式为: pip search 。如果不写关键字,则提示 ERROR: Missing required argument (search query). 。

如何在 pocket option 中注册

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This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your 如何在 pocket option 中注册 browsing experience.

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Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.