blocks|key|2820308|text|我删除了不需要的注册表项(这解决了我的问题)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2820309|HKEY_CURRENT_USER\Software\Python\PythonCore\|code-block|syntax|javascript|2820310|源代码还提到了以下密钥，但它们在我的电脑中并不存在：|2820311|HKEY_LOCAL_MACHINE\Software\Python\PythonCore\++
HKEY_LOCAL_MACHINE\Software\Wow6432Node\Python\PythonCore\|2820312|来源：https://github.com/Microsoft/PTVS/issues/18|offset|length|2820313|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Microsoft/PTVS/issues/18^0|0|0|0|0|3|17|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

I deleted the unwanted registry keys from (what solved the problem for me):

<pre><code>HKEY_CURRENT_USER\Software\Python\PythonCore\
</code></pre>

The source mentions also the following keys, but they did not exist in my computer:

<pre><code>HKEY_LOCAL_MACHINE\Software\Python\PythonCore\ 
HKEY_LOCAL_MACHINE\Software\Wow6432Node\Python\PythonCore\
</code></pre>

Source: <a href="https://github.com/Microsoft/PTVS/issues/18" rel="nofollow noreferrer">https://github.com/Microsoft/PTVS/issues/18</a>

blocks|key|4933074|text|我在这里找到了这个问题的答案:+|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4933075|4933076|首先单击此按钮|unordered-list-item|4933077|4933078|​|4933079|📷|atomic|4933080|4933081|4933082|，然后您将看到这样的屏幕|4933083|4933084|4933085|4933086|4933087|然后单击显示-|4933088|的下拉菜单。然后单击enviroment.|4933089|
|4933090|Your概述选项卡。|4933091|4933092|单击删除/删除现在应该删除的环境。|4933093|4933094|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/1936816acb5073653a38f7503d172f63.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/4440b92a68b0dfa17843e1c130787495.png^0|0|F|0|0|0|0|0|0|1|0|0|0|0|0|0|0|0|1|1|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1K|8|@$9|1L|A|1M|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|1N|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1O|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1P|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|M|3|N|5|O|7|1R|8|@]|D|@$9|1S|A|1T|1|1U]]|E|$]]|$1|P|3|L|5|6|7|1V|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]|$1|R|3|S|5|I|7|1X|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|U|3|L|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|V|3|N|5|O|7|20|8|@]|D|@$9|21|A|22|1|23]]|E|$]]|$1|W|3|L|5|6|7|24|8|@]|D|@]|E|$]]|$1|X|3|Y|5|6|7|25|8|@]|D|@]|E|$]]|$1|Z|3|10|5|I|7|26|8|@]|D|@]|E|$]]|$1|11|3|12|5|6|7|27|8|@]|D|@]|E|$]]|$1|13|3|14|5|I|7|28|8|@]|D|@]|E|$]]|$1|15|3|12|5|6|7|29|8|@]|D|@]|E|$]]|$1|16|3|17|5|I|7|2A|8|@]|D|@]|E|$]]|$1|18|3|-4|5|6|7|2B|8|@]|D|@]|E|$]]|$1|19|3|-4|5|6|7|2C|8|@]|D|@]|E|$]]]|1A|$1B|$5|1C|1D|1E|E|$1F|1G|1H|-4]]|1I|$5|1C|1D|1E|E|$1F|1J|1H|-4]]]]

I found my answer to this question here : <a href="https://docs.microsoft.com/en-us/visualstudio/python/managing-python-environments-in-visual-studio?view=vs-2019#fix-or-delete-invalid-environments" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/visualstudio/python/managing-python-environments-in-visual-studio?view=vs-2019#fix-or-delete-invalid-environments</a>
<ul>
<li>First click this button</li>
</ul>
<a href="https://i.stack.imgur.com/UdEjV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UdEjV.png" alt="Click the button here" /></a>
<ul>
<li>You will then see this kind of screen</li>
</ul>
<a href="https://i.stack.imgur.com/hgHcK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hgHcK.png" alt="enter image description here" /></a>
<ul>
<li>Then click the dropdown menu where it shows - packages. Then click the overview tab.</li>
<li>Click the delete/remove the enviroment.</li>
<li>Your enviroment should now be removed.</li>
</ul>

blocks|key|4932895|text|这是要阅读的the+link|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4932896|我将引用我认为与您的案例相关的内容，但如果不相关，请全部阅读并找到您需要的内容|4932897|通过右键单击|4932898|环境并选择添加/删除Python环境...，可以将任何全局环境添加为项目环境。从显示的列表中，您可以选择或取消选择project.%2B中可用的环境|blockquote|4932899|4932900|4932901|还有..。|4932902|4932903|将虚拟环境添加到项目中后，它将出现在Python+environment窗口中，您可以像激活任何其他环境一样激活它，并且可以管理它的包。右键单击它并选择Remove，要么删除对环境的引用，要么删除环境及其在磁盘上的所有文件(但不删除基本解释器)。|4932904|4932905|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/visualstudio/python/python-environments^0|6|8|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|15|8|@]|9|@]|C|$]]|$1|H|3|I|5|J|7|16|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|17|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|18|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|19|8|@]|9|@]|C|$]]|$1|O|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]|$1|P|3|Q|5|J|7|1B|8|@]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1C|8|@]|9|@]|C|$]]|$1|S|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

This is <a href="https://docs.microsoft.com/en-us/visualstudio/python/python-environments" rel="nofollow noreferrer">the link</a> to read

I'll quote you what I think is relevant for your case, but if it's not, just read it all and find what you need

<blockquote>
 Any global environment can be added as a project environment by
 right-clicking Python Environments and selecting Add/Remove Python
 Environments.... From the displayed list you can select or deselect
 those environments that are available in your project.+
</blockquote>

And...

<blockquote>
 Once a virtual environment is added to your project, it appears in the
 Python Environments window, you can activate it like any other
 environment, and you can manage its packages. Right-clicking it and
 selecting Remove either removes the reference to the environment, or
 deletes the environment and all its files on disk (but not the base
 interpreter).
</blockquote>

blocks|key|120810|text|问题1的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|120811|Visual+Studio通过遵循Install+Python+interpreters中描述的PEP+514来搜索注册表以检测全局安装的python环境。|120812|问题2的：|120813|再次打开Visual+Studio安装程序并更改当前安装，只选择所需的python解释器(您将在Components选项卡中找到它们)。|120814|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/visualstudio/python/installing-python-interpreters?view=vs-2017|1|https://www.python.org/dev/peps/pep-0514/^0|4|1|0|H|R|0|1C|7|1|0|4|1|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|H|3|I|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|18|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]|T|$5|O|P|Q|E|$R|U]]]]

to Question 1:

Visual Studio searches the registry to detect global installed python environments by following <a href="https://www.python.org/dev/peps/pep-0514/" rel="nofollow noreferrer" title="Python registration in the Windows registry">PEP 514</a> as described in <a href="https://docs.microsoft.com/en-us/visualstudio/python/installing-python-interpreters?view=vs-2017" rel="nofollow noreferrer">Install Python interpreters</a>. 

to Question 2:

Open the Visual Studio Installer again and change the current installation by selecting only the python interpreters you need (you will find they in the Components tab).

Python newbie here. I am on windows. I installed anaconda a while back for my own user account (not for all users on windows). It installed into c:\users...\local..anaconda and all is good. I might have recently updated anaconda and installed VS 2017. 

Now I seem to have 4 python environments. 

I tried uninstalling from add-remove programs but some how the environments did not go away.

<a href="https://i.stack.imgur.com/ns4Fm.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ns4Fm.png" alt=""></a>

My questions:
 1. Where does Visual Studio get the list of environment names?
 2. How do I delete these environments? I just want to keep one and delete all the others

Delete python environment

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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Python新手在这里。我在窗户上。我不久前为我自己的用户帐户安装了anaconda (不是所有的windows用户)。它安装到c:\users...\local..anaconda中，一切正常。我可能最近更新了anaconda并安装了VS 2017。现在我似乎有4个python环境。我试着从add-remove程序中卸载，但有些环境并没有消失。​​我的问题: 1. Visual Studio从哪

问删除python环境
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