blocks|key|1564160|text|与pip没有等价物。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1564161|最好的方法是pip+install+package+&&+pip+freeze+>+requirements.txt|1564162|你可以在他们的documentation+page上看到所有可用的选项。|1564163|如果它真的困扰您，那么编写一个接受-s参数并自动冻结到您的requirements.txt文件的自定义bash脚本(pips)也不是太难。|1564164|编辑1个|BOLD|1564165|自写这篇文章以来，在提供类似于NPM的自动--save-dev选项方面没有任何变化，但是Kenneth+Reitz+(+requests和更多的作者)发布了更多关于better+pip+workflow的信息，以更好地处理pip更新。|1564166|编辑2|1564167|链接自上面的“更好的pip工作流程”文章，现在建议使用pipenv来管理需求和虚拟环境。最近我用了很多次，我想总结一下这个转换是多么的简单：|1564168|安装pipenv+(在Mac上)|1564169|brew+install+pipenv|code-block|syntax|javascript|1564170|pipenv创建并管理它自己的虚拟环境，因此在使用现有requirements.txt__的项目中，安装所有需求(我使用的是Python3.7，但如果不这样做，您可以删除--three+)非常简单：|1564171|pipenv+--three+install|1564172|激活virtualenv来运行命令也很容易|1564173|pipenv+shell|1564174|安装要求将自动更新Pipfile和Pipfile.lock|1564175|pipenv+install+<package>|1564176|也可以更新过期的包|1564177|pipenv+update|1564178|我强烈推荐checking+it+out，特别是如果来自npm背景，因为它与package.json和package-lock.json有相似的感觉|1564179|entityMap|0|LINK|mutability|MUTABLE|url|https://pip.pypa.io/en/latest/cli/|1|https://kennethreitz.org/essays/2016/02/25/a-better-pip-workflow|2|https://pipenv.readthedocs.io/en/latest/|3|https://pipenv.readthedocs.io/en/latest/basics/^0|1|3|0|6|1G|0|7|I|0|0|H|2|T|G|1M|4|0|0|4|0|L|A|1O|8|33|3|2A|J|1|0|0|3|0|R|6|R|6|2|0|2|6|0|0|0|6|R|G|2D|7|0|0|0|0|9|7|H|C|0|0|0|0|S|3|12|C|1F|H|5|F|3|0^^$0|@$1|2|3|4|5|6|7|1X|8|@$9|1Y|A|1Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|20|8|@$9|21|A|22|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|23|8|@]|D|@$9|24|A|25|1|26]]|E|$]]|$1|J|3|K|5|6|7|27|8|@$9|28|A|29|B|C]|$9|2A|A|2B|B|C]|$9|2C|A|2D|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|2E|8|@$9|2F|A|2G|B|N]]|D|@]|E|$]]|$1|O|3|P|5|6|7|2H|8|@$9|2I|A|2J|B|C]|$9|2K|A|2L|B|C]|$9|2M|A|2N|B|C]]|D|@$9|2O|A|2P|1|2Q]]|E|$]]|$1|Q|3|R|5|6|7|2R|8|@$9|2S|A|2T|B|N]]|D|@]|E|$]]|$1|S|3|T|5|6|7|2U|8|@$9|2V|A|2W|B|C]]|D|@$9|2X|A|2Y|1|2Z]]|E|$]]|$1|U|3|V|5|6|7|30|8|@$9|31|A|32|B|C]]|D|@]|E|$]]|$1|W|3|X|5|Y|7|33|8|@]|D|@]|E|$Z|10]]|$1|11|3|12|5|6|7|34|8|@$9|35|A|36|B|C]|$9|37|A|38|B|C]|$9|39|A|3A|B|C]]|D|@]|E|$]]|$1|13|3|14|5|Y|7|3B|8|@]|D|@]|E|$Z|10]]|$1|15|3|16|5|6|7|3C|8|@]|D|@]|E|$]]|$1|17|3|18|5|Y|7|3D|8|@]|D|@]|E|$Z|10]]|$1|19|3|1A|5|6|7|3E|8|@$9|3F|A|3G|B|C]|$9|3H|A|3I|B|C]]|D|@]|E|$]]|$1|1B|3|1C|5|Y|7|3J|8|@]|D|@]|E|$Z|10]]|$1|1D|3|1E|5|6|7|3K|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|Y|7|3L|8|@]|D|@]|E|$Z|10]]|$1|1H|3|1I|5|6|7|3M|8|@$9|3N|A|3O|B|C]|$9|3P|A|3Q|B|C]|$9|3R|A|3S|B|C]]|D|@$9|3T|A|3U|1|3V]]|E|$]]|$1|1J|3|-4|5|6|7|3W|8|@]|D|@]|E|$]]]|1K|$1L|$5|1M|1N|1O|E|$1P|1Q]]|1R|$5|1M|1N|1O|E|$1P|1S]]|1T|$5|1M|1N|1O|E|$1P|1U]]|1V|$5|1M|1N|1O|E|$1P|1W]]]]

There isn't an equivalent with <code>pip</code>.
Best way is to <code>pip install package &amp;&amp; pip freeze &gt; requirements.txt</code>
You can see all the available options on their <a href="https://pip.pypa.io/en/latest/cli/" rel="noreferrer">documentation page</a>.
If it really bothers you, it wouldn't be too difficult to write a custom bash script (<code>pips</code>) that takes a <code>-s</code> argument and freezes to your <code>requirements.txt</code> file automatically.
Edit 1
Since writing this there has been no change in providing an auto <code>--save-dev</code> option similar to NPM however Kenneth Reitz (author of <code>requests</code> and many more) has released some more info about a <a href="https://kennethreitz.org/essays/2016/02/25/a-better-pip-workflow" rel="noreferrer">better pip workflow</a> to better handle <code>pip</code> updates.
Edit 2
Linked from the &quot;better pip workflow&quot; article above it is now recommended to use <a href="https://pipenv.readthedocs.io/en/latest/" rel="noreferrer"><code>pipenv</code></a> to manage requirements and virtual environments. Having used this a lot recently I would like to summarise how simple the transition is:
Install <code>pipenv</code> (on Mac)
<pre><code>brew install pipenv
</code></pre>
<code>pipenv</code> creates and manages it's own virtual environments so in a project with an existing <code>requirements.txt</code>, installing all requirements (I use Python3.7 but you can remove the <code>--three</code> if you do not) is as simple as:
<pre><code>pipenv --three install
</code></pre>
Activating the virtualenv to run commands is also easy
<pre><code>pipenv shell
</code></pre>
Installing requirements will automatically update the <code>Pipfile</code> and <code>Pipfile.lock</code>
<pre><code>pipenv install &lt;package&gt;
</code></pre>
It's also possible to update out-of-date packages
<pre><code>pipenv update
</code></pre>
I highly recommend <a href="https://pipenv.readthedocs.io/en/latest/basics/" rel="noreferrer">checking it out</a> especially if coming from a <code>npm</code> background as it has a similar feel to <code>package.json</code> and <code>package-lock.json</code>

blocks|key|5422398|text|我在pip上做了一个快速修改，在安装/卸载命令中添加了--save选项。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5422399|请看看我的博客，了解更多关于这次黑客攻击的信息：http://blog.abhiomkar.in/2015/11/12/pip-save-npm-like-behaviour-to-pip/|5422400|安装(GitHub)：https://github.com/abhiomkar/pip-save|5422401|希望这能有所帮助。|5422402|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.abhiomkar.in/2015/11/12/pip-save-npm-like-behaviour-to-pip/|1|https://github.com/abhiomkar/pip-save^0|2|3|R|6|0|O|1Z|0|0|B|11|1|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|H|3|I|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|J|3|K|5|6|7|18|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]|T|$5|O|P|Q|E|$R|U]]]]

I made a quick hack on <code>pip</code> to add <code>--save</code> option to install/uninstall commands.

Please have a look at my blog for more information about this hack: 
<a href="http://blog.abhiomkar.in/2015/11/12/pip-save-npm-like-behaviour-to-pip/" rel="nofollow">http://blog.abhiomkar.in/2015/11/12/pip-save-npm-like-behaviour-to-pip/</a>

Installation (GitHub):
<a href="https://github.com/abhiomkar/pip-save" rel="nofollow">https://github.com/abhiomkar/pip-save</a>

Hope this helps.

blocks|key|1893427|text|您可以手动并将其保存在生成文件(或文本文件，然后导入到生成文件中)中：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1893428|PYTHON=.venv/bin/python+#+path+to+pyphon
PIP=.venv/bin/pip+#+path+to+pip
SOURCE_VENV=.+.venv/bin/activate


install:
++++virtualenv+.venv
++++$(SOURCE_VENV)+&&+$(PIP)+install+-e+PACKAGE
++++$(SOURCE_VENV)+&&+$(PIP)+install+-r+requirements.txt+#+other+required+packages|code-block|syntax|javascript|1893429|然后运行make+install|CODE|1893430|entityMap^0|5|U|0|0|0|G|4|C|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|S|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|M]]|D|@]|E|$]]|$1|N|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|O|$]]

you can manually save it in a Makefile (or a text file and then imported in your Makefile):

 

<pre><code>PYTHON=.venv/bin/python # path to pyphon
PIP=.venv/bin/pip # path to pip
SOURCE_VENV=. .venv/bin/activate


install:
 virtualenv .venv
 $(SOURCE_VENV) &amp;&amp; $(PIP) install -e PACKAGE
 $(SOURCE_VENV) &amp;&amp; $(PIP) install -r requirements.txt # other required packages
</code></pre>

and then just run <code>make install</code>

blocks|key|1568163|text|创建一个shell函数来做这件事怎么样？将以下代码添加到您的~/.profile或~/.bashrc|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1568164|pips()+{
++++local+pkg=$1

++++if+[+-z+"$1"+];+then
++++++++echo+"usage:+pips+<pkg+name>"
++++++++return+1
++++fi

++++local+_ins="pip+install+$pkg"
++++eval+$_ins
++++pip+freeze+%7C+grep+$pkg+-i+>>+requirements.txt
}|code-block|syntax|javascript|1568165|然后运行source+~/.profile或source+~/.bashrc将其导入到当前终端|1568166|当您想要安装&&保存一个包时，只需运行，例如pips+requests。安装包后，其版本将保存到您当前目录下的requirements.txt中。|1568167|entityMap^0|U|A|15|9|0|0|4|H|M|G|0|M|D|1J|G|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|P|$]]

How about make a shell function to do this ?
Add below code to your <code>~/.profile</code> or <code>~/.bashrc</code> 

<pre><code>pips() {
 local pkg=$1

 if [ -z "$1" ]; then
 echo "usage: pips &lt;pkg name&gt;"
 return 1
 fi

 local _ins="pip install $pkg"
 eval $_ins
 pip freeze | grep $pkg -i &gt;&gt; requirements.txt
}
</code></pre>

then run <code>source ~/.profile</code> or <code>source ~/.bashrc</code> to import it to your current terminal

when you want to install &amp;&amp; save a package, just run, for example <code>pips requests</code>.
after package was installed, its version will be save into <code>requirements.txt</code> in your current directory.

blocks|key|4003830|text|我已经创建了一个名为pipm的python包，它包装了实际的pip。所有pip命令都将按原样工作，而且它们将反映在需求文件中。与pip-save+(https://github.com/kgritesh/pip-save+5年不活跃)类似的工具不同，我发现它不能使用，它可以处理许多文件和环境(测试、开发、生产等)。它还具有升级所有/任何依赖项的命令。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4003831|安装|4003832|pipm+install+pkg-name|4003833|作为开发依赖项的安装|4003834|pipm+install+pkg-name+--dev|4003835|作为测试依赖项的安装|4003836|pipm+install+pkg-name+--test|4003837|删除|4003838|pipm+uninstall+pkg-name|4003839|更新所有依赖项|4003840|pipm+update|4003841|安装需求文件中的所有依赖项|4003842|pipm+install|4003843|包括开发依赖项|4003844|pipm+install+--dev|4003845|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/jnoortheen/pipm|1|https://github.com/kgritesh/pip-save^0|U|3|10|3|1S|8|A|4|0|22|10|1|0|0|0|L|0|0|0|R|0|0|0|S|0|0|0|N|0|0|0|B|0|0|0|C|0|0|0|I|0^^$0|@$1|2|3|4|5|6|7|1H|8|@$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]]|D|@$9|1O|A|1P|1|1Q]|$9|1R|A|1S|1|1T]]|E|$]]|$1|F|3|G|5|6|7|1U|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|1V|8|@$9|1W|A|1X|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1Z|8|@$9|20|A|21|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|22|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|23|8|@$9|24|A|25|B|C]]|D|@]|E|$]]|$1|R|3|S|5|6|7|26|8|@]|D|@]|E|$]]|$1|T|3|U|5|6|7|27|8|@$9|28|A|29|B|C]]|D|@]|E|$]]|$1|V|3|W|5|6|7|2A|8|@]|D|@]|E|$]]|$1|X|3|Y|5|6|7|2B|8|@$9|2C|A|2D|B|C]]|D|@]|E|$]]|$1|Z|3|10|5|6|7|2E|8|@]|D|@]|E|$]]|$1|11|3|12|5|6|7|2F|8|@$9|2G|A|2H|B|C]]|D|@]|E|$]]|$1|13|3|14|5|6|7|2I|8|@]|D|@]|E|$]]|$1|15|3|16|5|6|7|2J|8|@$9|2K|A|2L|B|C]]|D|@]|E|$]]|$1|17|3|-4|5|6|7|2M|8|@]|D|@]|E|$]]]|18|$19|$5|1A|1B|1C|E|$1D|1E]]|1F|$5|1A|1B|1C|E|$1D|1G]]]]

I've created python package that wraps around the actual <code>pip</code> called <a href="https://github.com/jnoortheen/pipm" rel="nofollow noreferrer">pipm</a>. All <code>pip</code> commands will work as it is, plus they will be reflected in the requirements file. Unlike <code>pip-save</code> (<a href="https://github.com/kgritesh/pip-save" rel="nofollow noreferrer">https://github.com/kgritesh/pip-save</a> unactive for 5 years) similar tool I found and wasn't able to use, it can handle many files and environments(test, dev, production, etc. ). It also has command to upgrade all/any of your dependencies.
<h2>installation</h2>
<code>pipm install pkg-name</code>
<h2>installation as development dependency</h2>
<code>pipm install pkg-name --dev</code>
<h2>installation as testing dependency</h2>
<code>pipm install pkg-name --test</code>
<h2>removal</h2>
<code>pipm uninstall pkg-name</code>
<h2>update all your dependencies</h2>
<code>pipm update</code>
<h2>install all your dependencies from the requirements file</h2>
<code>pipm install</code>
<h2>including development dependencies</h2>
<code>pipm install --dev</code>

blocks|key|1568185|text|这条简单的线是一个起点。您可以很容易地构建一个bash命令来重用该行中的包。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1568186|pip+install+PACKAGE+&&+pip+freeze+%7C+grep+PACKAGE+>>+requirements.txt|code-block|syntax|javascript|1568187|感谢@devsnd提供了简单的bash函数示例：|1568188|function+pip-install-save+{+
++++pip+install+$1+&&+pip+freeze+%7C+grep+$1+>>+requirements.txt
}|1568189|要使用它，只需运行：|1568190|pip-install-save+some-package|1568191|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

This simple line is a starting point. You can easily built a bash command to reuse the PACKAGE in the line.

<pre><code>pip install PACKAGE &amp;&amp; pip freeze | grep PACKAGE &gt;&gt; requirements.txt
</code></pre>

Thanks to @devsnd for the simple bash function example:

<pre><code>function pip-install-save { 
 pip install $1 &amp;&amp; pip freeze | grep $1 &gt;&gt; requirements.txt
}
</code></pre>

To use it, just run:

<pre><code>pip-install-save some-package
</code></pre>

blocks|key|1893543|text|我正在使用这个小命令行安装一个软件包，并将其版本保存在requirements.txt中：pkg=package+&&+pip+install+$pkg+&&+echo+$(pip+freeze+%7C+grep+-i+$pkg)+>>+requirements.txt|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1893544|entityMap^0|R|G|19|2G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

I am using this small command line to install a package and save its version in <code>requirements.txt</code> : 
<code>pkg=package &amp;&amp; pip install $pkg &amp;&amp; echo $(pip freeze | grep -i $pkg) &gt;&gt; requirements.txt</code>

blocks|key|5422570|text|更新:显然，、pipenv+is+not+officially+endorsed+by+Python+maintainers和previously-linked+page属于不同的组织。这个工具有它的优点和缺点，但是下面的解决方案仍然达到了OP所寻求的结果。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|5422571|pipenv是一个依赖项管理工具，它包装了pip，并提供了您想要的东西：|CODE|5422572|https://pipenv.kennethreitz.org/en/latest/#example-pipenv-workflow|5422573|5422574|+$+pipenv+install+<package>|blockquote|5422575|5422576|这将创建一个不存在的Pipfile文件。如果确实存在，它将自动使用您提供的新包进行编辑。|5422577|5422578|Pipfile直接等同于package.json，而Pipfile.lock对应于package-lock.json。|5422579|entityMap|0|LINK|mutability|MUTABLE|url|https://chriswarrick.com/blog/2018/07/17/pipenv-promises-a-lot-delivers-very-little/|1|https://packaging.python.org/tutorials/managing-dependencies/|2|https://pipenv.kennethreitz.org/|3^0|0|6|7|1J|0|1R|M|1|0|L|3|0|6|2|0|0|1U|3|0|0|1|Q|0|0|0|0|0|7|C|C|Q|C|15|H|0^^$0|@$1|2|3|4|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@$9|1A|A|1B|1|1C]|$9|1D|A|1E|1|1F]]|E|$]]|$1|F|3|G|5|6|7|1G|8|@$9|1H|A|1I|B|H]]|D|@$9|1J|A|1K|1|1L]]|E|$]]|$1|I|3|J|5|6|7|1M|8|@]|D|@$9|1N|A|1O|1|1P]]|E|$]]|$1|K|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|1R|8|@$9|1S|A|1T|B|H]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1U|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|1V|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1X|8|@$9|1Y|A|1Z|B|H]|$9|20|A|21|B|H]|$9|22|A|23|B|H]|$9|24|A|25|B|H]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|26|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]|12|$5|X|Y|Z|E|$10|13]]|14|$5|X|Y|Z|E|$10|15]]|16|$5|X|Y|Z|E|$10|J]]]]

Update: apparently, <a href="https://chriswarrick.com/blog/2018/07/17/pipenv-promises-a-lot-delivers-very-little/" rel="nofollow noreferrer">pipenv is not officially endorsed by Python maintainers</a>, and the <a href="https://packaging.python.org/tutorials/managing-dependencies/" rel="nofollow noreferrer">previously-linked page</a> is owned by a different organization. The tool has its pros and cons, but the below solution still achieves the result that the OP is seeking.
<a href="https://pipenv.kennethreitz.org/" rel="nofollow noreferrer">pipenv</a> is a dependency management tool that wraps <code>pip</code> and, among other things, provides what you're asking:
<a href="https://pipenv.kennethreitz.org/en/latest/#example-pipenv-workflow" rel="nofollow noreferrer">https://pipenv.kennethreitz.org/en/latest/#example-pipenv-workflow</a>
<blockquote>
<code>$ pipenv install &lt;package&gt;</code>
This will create a Pipfile if one doesn’t exist. If one does exist, it will automatically be edited with the new package your provided.
</blockquote>
A <code>Pipfile</code> is a direct equivalent of <code>package.json</code>, while <code>Pipfile.lock</code> corresponds to <code>package-lock.json</code>.

blocks|key|5422581|text|这个怎么样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5422582|pip+freeze+>>+requirements.txt|code-block|syntax|javascript|5422583|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

What about this one:
<pre><code>pip freeze &gt;&gt; requirements.txt
</code></pre>

In nodejs, I can do <code>npm install package --save-dev</code> to save the installed package into the package.

How do I achieve the same thing in Python package manager <code>pip</code>? I would like to save the package name and its version into, say, <code>requirements.pip</code> just after installing the package using something like <code>pip install package --save-dev requirements.pip</code>.

What is pip's equivalent of `npm install package --save-dev`?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在nodejs中，我可以执行npm install package --save-dev将安装的包保存到包中。如何在Python包管理器pip中实现相同的功能？我想在使用pip install package --save-dev requirements.pip之类的工具安装完包之后，立即将包的名称及其版本保存到re...

问与` `npm install package --save-dev`对应的pip是什么？
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问与` `npm install package --save-dev`对应的pip是什么？EN