blocks|key|2699244|text|您正在安装一个包含用C/C%2B%2B编写的部分的软件包，因此您需要在您的计算机和PATH中安装cl.exe+(+Microsoft+C编译器)。PATH是一个环境变量，它告诉Windows在哪里可以找到可执行文件。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2699245|首先，确保安装了C%2B%2B+build+tools+for+Visual+Studio。|BOLD|2699246|如果您的计算机上已经安装了Visual+Studio，请从Visual+Studio安装程序中使用C%2B%2B安装桌面开发。您可以从Visual+Studio+downloads+page+(靠近页面底部)单独下载+Build+Tools++Visual+Studio，然后从安装程序中选择C%2B%2B+build+tools。<代码>H216<代码>F217|2699247|然后，不使用普通的命令提示符或PowerShell，而是使用“开始”菜单“”中Visual+Studio文件夹中的一个特殊命令提示符。这将自动设置PATH，以便可以找到cl.exe。|2699248|2699249|对于32位Python，使用x86本机工具命令Prompt.|unordered-list-item|2699250|For+64位Python，使用x86+x64本机工具命令Prompt.|2699251|2699252|entityMap|0|LINK|mutability|MUTABLE|url|https://visualstudio.microsoft.com/downloads/^0|11|4|18|6|1X|4|0|8|F|0|1I|1E|2X|Q|3Y|F|1R|S|0|0|13|1G|21|4|2C|6|0|0|0|U|0|0|Z|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|18|8|@$9|19|A|1A|B|H]]|D|@]|E|$]]|$1|I|3|J|5|6|7|1B|8|@$9|1C|A|1D|B|H]|$9|1E|A|1F|B|H]|$9|1G|A|1H|B|H]]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|K|3|L|5|6|7|1L|8|@$9|1M|A|1N|B|H]|$9|1O|A|1P|B|C]|$9|1Q|A|1R|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]|$1|N|3|O|5|P|7|1T|8|@$9|1U|A|1V|B|H]]|D|@]|E|$]]|$1|Q|3|R|5|P|7|1W|8|@$9|1X|A|1Y|B|H]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|20|8|@]|D|@]|E|$]]]|U|$V|$5|W|X|Y|E|$Z|10]]]]

You are installing a package with parts written in C/C++, so you need to have <code>cl.exe</code> (the Microsoft C Compiler) installed on your computer and in your <code>PATH</code>. <code>PATH</code> is an environment variable that tells Windows where to find executable files.
First, ensure the C++ build tools for Visual Studio are installed.
<ul>
<li>If you already have Visual Studio on your computer, install Desktop development with C++ from the Visual Studio Installer, which you should have in Start Menu.</li>
<li>Otherwise, you can download Build Tools for Visual Studio separately from the <a href="https://visualstudio.microsoft.com/downloads/" rel="nofollow noreferrer">Visual Studio downloads page</a> (near the bottom of the page), then choose C++ build tools from the installer.</li>
</ul>
Then, instead of the normal Command Prompt or PowerShell, use one of the special command prompts in the Visual Studio folder in Start Menu. This sets up <code>PATH</code> automatically, so that <code>cl.exe</code> can be found.
<ul>
<li>For 32-bit Python, use x86 Native Tools Command Prompt.</li>
<li>For 64-bit Python, use x64 Native Tools Command Prompt.</li>
</ul>

blocks|key|2699303|text|这无疑是最简单的解决方案。对于那些不知道如何做的人：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2699304|2699305|将C%2B%2B编译器https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019|ordered-list-item|offset|length|2699306|Go安装到安装文件夹(在我的示例中是)：C:\Program+Files+(+x86+)\Microsoft+Visual+C%2B%2B+Build+Tools+|2699307|打开Visual+C%2B%2B+2015+x86+x64交叉生成工具命令提示符|2699308|类型:Microsoft|2699309|2699310|entityMap|0|LINK|mutability|MUTABLE|url|https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019^0|0|0|7|28|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Y|8|@]|9|@$F|Z|G|10|1|11]]|A|$]]|$1|H|3|I|5|E|7|12|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|13|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|14|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

This is easily the simplest solution.
For those who don't know how to do this:

<ol>
<li>Install the C++ compiler
<a href="https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019" rel="noreferrer">https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019</a></li>
<li>Go to the installation folder (In my case it is):
C:\Program Files (x86)\Microsoft Visual C++ Build Tools</li>
<li>Open Visual C++ 2015 x86 x64 Cross Build Tools Command Prompt</li>
<li>Type: <code>pip install package_name</code></li>
</ol>

blocks|key|2699421|text|请参阅此链接：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2699422|https://www.lfd.uci.edu/~gohlke/pythonlibs/#cytoolz|offset|length|2699423|为你的python版本下载正确的whl包(如果你不知道你有什么版本的python，只需要午餐解释器)|2699424|使用pip安装包，假设该文件位于downloads文件夹中，并且您有python+3.6+32位：|2699425|python+-m+pip安装python|2699426|这不仅对这个包有效，而且对任何不能在你自己的windows安装下编译的包都有效。|2699427|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1F|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|12|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|C]]]]

Refer to this link:

<a href="https://www.lfd.uci.edu/~gohlke/pythonlibs/#cytoolz" rel="noreferrer">https://www.lfd.uci.edu/~gohlke/pythonlibs/#cytoolz</a>

Download the right whl package for you python version(if you have trouble knowing what version of python you have, just lunch the interpreter )

use pip to install the package, assuming that the file is in downloads folder and you have python 3.6 32 bit :

python -m pip install C:\Users\%USER%\Downloads\cytoolz‑0.9.0.1‑cp36‑cp36m‑win32.whl

this is not valid for just this package, but for any package that cannot compile under your own windows installation.

blocks|key|2699488|text|在我的例子中，我需要从Visual+Studio安装更多的工具(我使用的是VS2017社区和Python+3.6.4)。我安装了这些工具(参见安装程序截图here)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2699489|使用C%2B%2B进行|2699490|Desktop开发：我包含了所有默认项目以及接下来的项目：|ordered-list-item|style|BOLD|2699491|2699492|-+Windows+XP+support+for+C%2B%2B
-+Support+for+C%2B%2B/CLI
-+VC%2B%2B+2015.3+v140+toolset+|code-block|syntax|javascript|2699493|​|2699494|使用C%2B%2B进行|2699495|Linux开发|2699496|2699497|然后我以管理员权限打开Windows+PowerShell+(右击打开)，移动Visual+Studio安装文件夹，找到该路径：|2699498|cd+[Visual+Studio+Path]\VC\Auxiliary\Build|2699499|然后我执行了这个文件：|2699500|.\vcvars32.bat|2699501|之后，我像往常一样使用pip，例如，我想安装Mayavi|2699502|pip+install+mayavi|2699503|我希望它也能帮助到一些人。|2699504|entityMap|0|LINK|mutability|MUTABLE|url|https://msdnshared.blob.core.windows.net/media/2017/03/incredibuild.png^0|25|4|0|0|0|0|A|0|0|0|0|0|0|7|0|0|0|1S|0|0|0|B|0|0|0|S|0|0|0|D|0^^$0|@$1|2|3|4|5|6|7|1J|8|@]|9|@$A|1K|B|1L|1|1M]]|C|$]]|$1|D|3|E|5|6|7|1N|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1O|8|@$A|1P|B|1Q|I|J]]|9|@]|C|$]]|$1|K|3|-4|5|6|7|1R|8|@]|9|@]|C|$]]|$1|L|3|M|5|N|7|1S|8|@]|9|@]|C|$O|P]]|$1|Q|3|R|5|6|7|1T|8|@]|9|@]|C|$]]|$1|S|3|T|5|6|7|1U|8|@]|9|@]|C|$]]|$1|U|3|V|5|H|7|1V|8|@$A|1W|B|1X|I|J]]|9|@]|C|$]]|$1|W|3|-4|5|6|7|1Y|8|@]|9|@]|C|$]]|$1|X|3|Y|5|6|7|1Z|8|@$A|20|B|21|I|J]]|9|@]|C|$]]|$1|Z|3|10|5|N|7|22|8|@]|9|@]|C|$O|P]]|$1|11|3|12|5|6|7|23|8|@$A|24|B|25|I|J]]|9|@]|C|$]]|$1|13|3|14|5|N|7|26|8|@]|9|@]|C|$O|P]]|$1|15|3|16|5|6|7|27|8|@$A|28|B|29|I|J]]|9|@]|C|$]]|$1|17|3|18|5|N|7|2A|8|@]|9|@]|C|$O|P]]|$1|19|3|1A|5|6|7|2B|8|@$A|2C|B|2D|I|J]]|9|@]|C|$]]|$1|1B|3|-4|5|6|7|2E|8|@]|9|@]|C|$]]]|1C|$1D|$5|1E|1F|1G|C|$1H|1I]]]]

In my case I need to install more tools from Visual Studio (I'm using VS 2017 Community and Python 3.6.4). I installed those tools (see installer screenshot <a href="https://msdnshared.blob.core.windows.net/media/2017/03/incredibuild.png" rel="noreferrer">here</a>):

<ol>
<li>Desktop development with C++: I included all defaulted items and the next ones:

<ul>
<li>Windows XP support for C++</li>
<li>Support for C++/CLI</li>
<li>VC++ 2015.3 v140 toolset </li>
</ul></li>
<li>Linux development with C++</li>
</ol>

Then I opened the Windows PowerShell as Administrator privilegies (Right click to open) and move folder of Visual Studio installation and find that path:

<pre><code>cd [Visual Studio Path]\VC\Auxiliary\Build
</code></pre>

Then I executed this file: 

<pre><code>.\vcvars32.bat
</code></pre>

After that I use pip as normal, for instance, I wanted to install Mayavi:

<pre><code>pip install mayavi
</code></pre>

I hope that it helps someone too.

blocks|key|28929|text|这个问题我已经遇到过很多次了。有cl.exe，但出于某种奇怪的原因，pip找不到它，即使我们从cl.exe所在的bin文件夹中运行该命令。尝试使用conda安装程序，它对我来说工作得很好。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|28930|正如您在下图中所看到的，pip无法找到cl.exe。然后，我尝试使用conda进行安装|28931|​|28932|📷|atomic|28933|28934|令我惊讶的是，一旦您在正确的目录中安装了正确版本的vs构建工具，它就可以毫无错误地安装。|28935|28936|28937|28938|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/335561d5553c1753a7275a83d85ef0cd.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/d02b2d5b88e5bdd01510cd35619f72d6.png^0|G|6|Y|3|1B|6|1K|3|0|C|3|J|6|0|0|0|1|0|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1C|8|@$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1H|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|1I|8|@]|D|@$9|1J|A|1K|1|1L]]|E|$]]|$1|M|3|I|5|6|7|1M|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1N|8|@]|D|@]|E|$]]|$1|P|3|I|5|6|7|1O|8|@]|D|@]|E|$]]|$1|Q|3|K|5|L|7|1P|8|@]|D|@$9|1Q|A|1R|1|1S]]|E|$]]|$1|R|3|I|5|6|7|1T|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1U|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z|10|-4]]|11|$5|V|W|X|E|$Y|12|10|-4]]]]

I had come across this problem many times. There is <code>cl.exe</code> but for some strange reason <code>pip</code> couldn't find it, even if we run the command from the <code>bin</code> folder where <code>cl.exe</code> is present. Try using conda installer, it worked fine for me.

As you can see in the following image, <code>pip</code> is not able to find the <code>cl.exe</code>. Then I tried installing using conda 

<a href="https://i.stack.imgur.com/FLFBX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FLFBX.png" alt="image 1"></a>

And to my surprise it gets installed without an error once you have the right version of vs cpp build tools installed, i.e. v14.0 in the right directory.

<a href="https://i.stack.imgur.com/TVxqP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TVxqP.png" alt="image 2"></a>

blocks|key|30202|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|30203|安装Microsoft+visual+c%2B%2B+14.0生成工具。(Windows+7)|ordered-list-item|30204|使用conda.|30205|Activate创建虚拟环境，并使用conda安装必要的软件包。|30206|30207|30208|例如:+conda+install+-c+conda-forge+spacy|30209|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|N|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|O|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|P|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|Q|7|@]|8|@]|9|$]]|$1|H|3|-4|4|C|6|R|7|@]|8|@]|9|$]]|$1|I|3|-4|4|5|6|S|7|@]|8|@]|9|$]]|$1|J|3|K|4|5|6|T|7|@]|8|@]|9|$]]|$1|L|3|-4|4|5|6|U|7|@]|8|@]|9|$]]]|M|$]]

<ol>
<li>Install Microsoft visual c++ 14.0 build tool.(Windows 7)</li>
<li>create a virtual environment using conda.</li>
<li>Activate the environment and use conda to install the necessary package.</li>
</ol>

For example:
conda install -c conda-forge spacy

blocks|key|2699607|text|我在visual+studio+2017上也面临着同样的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2699608|您可以在C:\Program+Files(x86)\Microsoft+Visual+Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx86\x86中找到cl.exe。|offset|length|style|CODE|2699609|只需将环境变量设置为可执行地址，然后在anaconda中运行该命令，这对我来说很有效。|2699610|entityMap^0|0|4|2U|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

I was facing the same problem with visual studio 2017.
you can find cl.exe in
<code>C:\Program Files(x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx86\x86</code>.
just set the environment variable as the able address and run the command in anaconda, it worked for me.

blocks|key|2699625|text|如果你想让它变得简单和自动化，请查看Chocolatey.org/install，你基本上可以复制和粘贴这些命令，并根据你需要的VC%2B%2B版本对其进行调整。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2699626|此命令取自https://chocolatey.org/install|offset|length|2699627|Set-ExecutionPolicy+Bypass+-Scope+Process+-Force;+[System.Net.ServicePointManager]::SecurityProtocol+=+[System.Net.ServicePointManager]::SecurityProtocol+-bor+3072;+iex+((New-Object+System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))|code-block|syntax|javascript|2699628|安装了chocolatey之后，您可以关闭并重新打开Powershell终端，或者运行以下命令：|2699629|Import-Module+"$env:ChocolateyInstall\helpers\chocolateyInstaller.psm1"+;+Update-SessionEnvironment|2699630|现在你可以使用Chocolatey来安装Python+(默认是3.x的最新版本)。|2699631|choco+install+python

#+This+next+command+installs+the+latest+VisualStudio+installer+that+lets+you+get+specific+versions+of+the+build
#+Microsoft+has+replaced+the+2015+and+2017+installer+links+with+this+one,+and+we+can+still+use+it+to+install+the+2015+and+2017+components

choco+install+visualstudio2019buildtools+--package-parameters+"--add+Microsoft.VisualStudio.Component.VC.140+--passive+--locale+en-US+--add+Microsoft.VisualStudio.Component.Windows10SDK.$($PSVersionTable.BuildVersion.Build)+--no-includeRecommended"+-y+--timeout+0

#+Usually+need+the+"unlimited"+timeout+aka+"0"+because+Visual+Studio+Installer+takes+forever

#+Tool+portion
#+Microsoft.VisualStudio.Product.BuildTools
#+Component+portion(s)
#+Microsoft.VisualStudio.Component.VC.140
#+Win10SDK+needs+to+match+your+current+Win10+build+version
#+$($PSVersionTable.BuildVersion.Build)
#+Microsoft.VisualStudio.Component.Windows10SDK.$($PSVersionTable.BuildVersion.Build)

#+Because+VS2019+Build+Tools+are+dumb,+need+to+manually+link+a+couple+files+between+the+SDK+and+the+VC%2B%2B+dirs
#+You+may+need+to+tweak+the+version+here,+but+it+has+been+updated+to+be+as+dynamic+as+possible+
#+Use+an+elevated+Powershell+or+elevated+cmd+prompt+(if+using+cmd.exe+just+use+the+bits+after+/c)
cmd+/c+mklink+"C:\Program+Files+(x86)\Microsoft+Visual+Studio+14.0\VC\BIN\x86_amd64\rc.exe"+"C:\Program+Files+(x86)\Windows+Kits\10\bin\$($PSVersionTable.BuildVersion.Major).$($PSVersionTable.BuildVersion.Minor).$($PSVersionTable.BuildVersion.Build).0\x64\rc.exe"

cmd+/c+mklink+"C:\Program+Files+(x86)\Microsoft+Visual+Studio+14.0\VC\BIN\x86_amd64\rcdll.dll"+"C:\Program+Files+(x86)\Windows+Kits\10\bin\$($PSVersionTable.BuildVersion.Major).$($PSVersionTable.BuildVersion.Minor).$($PSVersionTable.BuildVersion.Build).0\x64\rcdll.dll"|2699632|一旦你安装了它，你应该重新启动。我有时不需要重启就能正常工作，但是如果你先重启，你的pip+install命令会工作得最好。|style|CODE|2699633|现在您可以使用pip+install+pipenv或pip+install+complex-package，应该可以运行了。|2699634|entityMap|0|LINK|mutability|MUTABLE|url|https://chocolatey.org/install^0|0|5|U|0|0|0|0|0|0|0|16|B|0|7|I|Q|R|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@]|9|@$D|18|E|19|1|1A]]|A|$]]|$1|F|3|G|5|H|7|1B|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|1C|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|1D|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Q|3|R|5|H|7|1F|8|@]|9|@]|A|$I|J]]|$1|S|3|T|5|6|7|1G|8|@$D|1H|E|1I|U|V]]|9|@]|A|$]]|$1|W|3|X|5|6|7|1J|8|@$D|1K|E|1L|U|V]|$D|1M|E|1N|U|V]]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]]]

If you want it really easy and a joy to automate, check out Chocolatey.org/install and you can basically copy and paste these commands and tweak it based on what versions of VC++ you need.

This command is taken from <a href="https://chocolatey.org/install" rel="nofollow noreferrer">https://chocolatey.org/install</a>

<pre><code>Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
</code></pre>

Once you have chocolatey installed you can either close and reopen your Powershell terminal or run this command: 

<pre><code>Import-Module "$env:ChocolateyInstall\helpers\chocolateyInstaller.psm1" ; Update-SessionEnvironment
</code></pre>

Now you can use Chocolatey to install Python (latest version of 3.x is default).

<pre><code>choco install python

# This next command installs the latest VisualStudio installer that lets you get specific versions of the build
# Microsoft has replaced the 2015 and 2017 installer links with this one, and we can still use it to install the 2015 and 2017 components

choco install visualstudio2019buildtools --package-parameters "--add Microsoft.VisualStudio.Component.VC.140 --passive --locale en-US --add Microsoft.VisualStudio.Component.Windows10SDK.$($PSVersionTable.BuildVersion.Build) --no-includeRecommended" -y --timeout 0

# Usually need the "unlimited" timeout aka "0" because Visual Studio Installer takes forever

# Tool portion
# Microsoft.VisualStudio.Product.BuildTools
# Component portion(s)
# Microsoft.VisualStudio.Component.VC.140
# Win10SDK needs to match your current Win10 build version
# $($PSVersionTable.BuildVersion.Build)
# Microsoft.VisualStudio.Component.Windows10SDK.$($PSVersionTable.BuildVersion.Build)

# Because VS2019 Build Tools are dumb, need to manually link a couple files between the SDK and the VC++ dirs
# You may need to tweak the version here, but it has been updated to be as dynamic as possible 
# Use an elevated Powershell or elevated cmd prompt (if using cmd.exe just use the bits after /c)
cmd /c mklink "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\rc.exe" "C:\Program Files (x86)\Windows Kits\10\bin\$($PSVersionTable.BuildVersion.Major).$($PSVersionTable.BuildVersion.Minor).$($PSVersionTable.BuildVersion.Build).0\x64\rc.exe"

cmd /c mklink "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\rcdll.dll" "C:\Program Files (x86)\Windows Kits\10\bin\$($PSVersionTable.BuildVersion.Major).$($PSVersionTable.BuildVersion.Minor).$($PSVersionTable.BuildVersion.Build).0\x64\rcdll.dll"
</code></pre>

Once you have this installed, you should reboot. I've occasionally had things work without a reboot, but your <code>pip install</code> commands will work best if you reboot first.

Now you can <code>pip install pipenv</code> or <code>pip install complex-package</code> and should be good to go.

I'm trying to install spaCy using <code>pip install spacy</code> but I'm getting the following error ..

<a href="https://i.stack.imgur.com/z2W1Y.png" rel="noreferrer"><img src="https://i.stack.imgur.com/z2W1Y.png" alt="enter image description here"></a>

I have VS 2015 installed, and I have the following Python install ..

<code>3.5.2 |Anaconda 2.5.0 (64-bit)| (default, Jul 5 2016, 11:41:13) [MSC v.1900 64 bit (AMD64)]</code>

I tried the following SO solutions to no avail ..

<ul>
<li><a href="https://stackoverflow.com/questions/41672714/command-cl-exe-failed-upon-pip-install-django-compressor">command cl.exe failed upon pip install django_compressor</a></li>
<li><a href="https://stackoverflow.com/questions/38059732/error-command-cl-exe-failed-no-such-file-or-directory">error: command &#39;cl.exe&#39; failed: No such file or directory</a></li>
</ul>

As well as various others. This is not a unique problem to this specific library but more generally anytime I try to install Python libraries that need C to build on Windows.

python pip on Windows - command 'cl.exe' failed

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我正在尝试使用pip install spacy安装spaCy，但出现以下错误。​​我已经安装了VS 2015，并且安装了以下Python。3.5.2 |Anaconda 2.5.0 (64-bit)| (default, Jul  5 2016, 11:41:13) [MSC v.1900 64 bit (AMD64...

问Windows上的python pip -命令'cl.exe‘失败
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