blocks|key|298468|text|您需要将该文件夹添加到Windows路径中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298469|https://docs.python.org/2/using/windows.html从这个问题上取了下来。|offset|length|298470|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.python.org/2/using/windows.html^0|0|0|18|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

You need to add that folder to your Windows Path:

<a href="https://docs.python.org/2/using/windows.html" rel="noreferrer">https://docs.python.org/2/using/windows.html</a> Taken from this question.

blocks|key|2696241|text|尝试命令行中的"py“而不是"python”：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696242|C:\Users\Cpsa>py
Python3.4.1+(v3.4.1:c0e311e010fc，2014年5月18日，10:38:22)+MSC+v.1600+32位(+win32+)
输入“帮助”、“版权”、“信用”或“许可”以获取更多信息。|blockquote|2696243|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|H|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|I|8|@]|9|@]|A|$]]]|F|$]]

Try "py" instead of "python" from command line:

<blockquote>
 C:\Users\Cpsa>py 
 Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (Intel)] on win32 
 Type "help", "copyright", "credits" or "license" for more information. 
 >>>
</blockquote>

blocks|key|2696328|text|我找到了答案..。单击安装程序并选中“向环境变量添加python变量”框，不要卸载旧版本，而是单击modify....Click上的链接获取图片.|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696329|​|2696330|📷|atomic|offset|length|2696331|2696332|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/cd01028282e3c751239d534d8008558a.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

I have found the answer... click on the installer and check the box "Add python to environment variables" DO NOT uninstall the old one rather click on modify....Click on link for picture...

<a href="https://i.stack.imgur.com/64G6u.png"><img src="https://i.stack.imgur.com/64G6u.png" alt="enter image description here"></a>

blocks|key|298760|text|如果您想查看python版本，那么应该使用py+-V而不是python+-V。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|298761|C:\Users\ghasan>py+-V
Python+3.7.1|blockquote|298762|如果您想转到python的运行环境，那么您应该使用py而不是python|298763|C:\Users\ghasan>py
Python3.7.1+(v3.7.1:260ec2c36a，2018年10月20日，14:57:15)+MSC+v.1915+64位(AMD64)+on+win32
输入“帮助”、“版权”、“信用”或“许可”以获取更多信息。|298764|在这里，您可以以以下方式运行python程序：|298765|打印(“Hello+Python”)
你好Python|298766|entityMap^0|L|5|T|9|0|0|P|2|U|6|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$]]|$1|I|3|J|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|K|3|L|5|H|7|13|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|14|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|15|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|R|$]]

If you want to see python version then you should use <code>py -V</code> instead of <code>python -V</code>

<blockquote>
 C:\Users\ghasan>py -V
 
 Python 3.7.1
</blockquote>

If you want to go to python's running environment then you should use <code>py</code> instead of <code>python</code>

<blockquote>
 C:\Users\ghasan>py
 
 Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:57:15) [MSC v.1915 64
 bit (AMD64)] on win32
 
 Type "help", "copyright", "credits" or "license" for more information.
</blockquote>

Here you can run the python program as:

<blockquote>
 print('Hello Python')
 
 Hello Python
</blockquote>

blocks|key|1374785|text|首先，确定您的python目录在哪里。它通常在C:\Python27中。如果您的命令不一样，请从下面的命令中更改它。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1374786|如果安装之后仍然无法识别python，那么在PowerShell中输入以下内容：|1374787|环境:设置环境变量(“路径”、"$env:Path;C:\Python27“、”用户“)|blockquote|1374788|关闭PowerShell，然后再次启动它，以确保Python现在运行。如果没有，则可能需要重新启动。|1374789|​|1374790|📷|atomic|1374791|1374792|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/d1fd8012f2eae32cd5c2bfc3d807c55c.png|imageAlt^0|N|B|0|0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|16|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|17|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|18|8|@]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|R|3|N|5|6|7|1C|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z|10|-4]]]]

Firstly, be sure where your python directory. It is normally in <code>C:\Python27</code>. If yours is different then change it from the below command.

If after you install it python still isn’t recognized, then in PowerShell enter this:

<blockquote>
 [Environment]::SetEnvironmentVariable("Path", "$env:Path;C:\Python27",
 "User")
</blockquote>

Close PowerShell and then start it again to make sure Python now runs. If it doesn’t,
restart may be required.

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

blocks|key|2696389|text|在命令提示符中键入py+-v而不是python+-v|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696390|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Type py -v instead of python -v in command prompt

blocks|key|298717|text|我通过在管理模式下运行CMD来解决这个问题，所以试试这个。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298718|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

i solved this by running CMD in administration mode, so try this.

blocks|key|1374968|text|打开具有管理访问权限的CMD+(右键单击“以管理员身份运行”)，然后在其中键入以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374969|set+PYTHONPATH=%25PYTHONPATH%25;C:\My_python_lib|code-block|syntax|javascript|1374970|用已安装的python的文件夹名替换My_python_lib，就像对我一样，它是C:\python27。然后，要检查path变量是否已设置，输入echo+%25PATH%25，您将看到您的python部分。因此，现在python是可访问的。从本教程中|offset|length|style|CODE|1374971|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.python.org/2/using/windows.html^0|0|0|15|B|21|B|2X|6|39|5|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]|$I|Z|J|10|K|L]|$I|11|J|12|K|L]]|9|@$I|13|J|14|1|15]]|A|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Open CMD with administrative access(Right click then run as administrator) then type the following command there:

<pre><code>set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib
</code></pre>

Replace My_python_lib with the folder name of your installed python like for me it was <code>C:\python27</code>.
Then to check if the path variable is set, type <code>echo %PATH%</code> you'll see your python part in the end. Hence now <code>python</code> is accessible.
<a href="https://docs.python.org/2/using/windows.html" rel="noreferrer">From this tutorial</a>

blocks|key|2696526|text|我已经安装了python+3.7.4。首先，我在命令提示符中尝试python。它说的是'Python不是公认的命令.‘。然后我尝试了'py‘命令，它起作用了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696527|我的示例命令是：|2696528|py+hacker.py|code-block|syntax|javascript|2696529|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I have installed python 3.7.4. First, I tried python in my command prompt. It was saying that 'Python is not recognized command......'. Then I tried 'py' command and it works. 

My sample command is:

<pre><code>py hacker.py
</code></pre>

blocks|key|2696353|text|我在安装Python时遇到了同样的问题，当我在系统中设置路径时，这个问题就得到了解决，下面是步骤。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696354|导航到“控制面板”->系统|unordered-list-item|2696355|点击左边的“高级系统设置”|2696356|点击“环境变量”|2696357|搜索并单击“路径”变量|2696358|点击“编辑”|2696359|在环境变量字段中添加“C：\”，如果您使用的是Windows7，那么从现有条目中用分号分隔它。如果您使用的是Windows10，只需单击“新建”添加即可。|2696360|重新打开命令提示符并尝试在这里输入图像描述|offset|length|2696361|entityMap|0|LINK|mutability|MUTABLE|url|https://i.stack.imgur.com/nQTES.jpg^0|0|0|0|0|0|0|0|C|9|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|12|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|13|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|14|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|15|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|16|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|17|8|@]|9|@$Q|18|R|19|1|1A]]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

I have met same issue when I install Python, and it is resolved when I set a PATH in system, here are the steps.

<ul>
<li>Navigate to "Control Panel" -> "System"</li>
<li>Click "Advanced system settings" on the left</li>
<li>Click "Environment Variables"</li>
<li>Search and click "Path" variable</li>
<li>Click "Edit"</li>
<li>Add "C:\"to the environment variables field, if you are using Windows7, then separate it by a semicolon from the existing entry. If you are using Windows10, just simply click "New" to add.</li>
<li>Reopen the Command Prompt and try
<a href="https://i.stack.imgur.com/nQTES.jpg" rel="nofollow noreferrer">enter image description here</a></li>
</ul>

blocks|key|2696207|text|在Python+文档中，设置路径，就像上面所做的那样。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2696208|在每个命令窗口的路径启动时，您应该安排将Python的安装目录添加到路径中。如果您最近安装了Python，那么命令dir：\py*可能会告诉您它是在哪里安装的；通常的位置类似于C：\Python+27。否则，您将被还原为搜索整个磁盘，使用工具，查找或点击搜索按钮，并查找“python.exe”。如果您发现Python安装在C：\Python+27目录中(编写本报告时为默认值)，则应确保输入命令|blockquote|2696209|然后，使用完整的路径名执行Python命令，以确保其工作正常。|2696210|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python.org/2/faq/windows^0|8|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|W|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

From the Python <a href="http://docs.python.org/2/faq/windows" rel="nofollow">docs</a>, set the PATH like you did as above.

<blockquote>
 You should arrange for Python’s installation directory to be added to the PATH of every command window as it starts. If you installed Python fairly recently then the command dir C:\py* will probably tell you where it is installed; the usual location is something like C:\Python27. Otherwise you will be reduced to a search of your whole disk 
 
 Use Tools ‣ Find or hit the Search button and look for “python.exe”. Supposing you discover that Python is installed in the C:\Python27 directory (the default at the time of writing), you should make sure that entering the command
</blockquote>

Then execute the Python command using the full path name to make sure that works.

blocks|key|1374902|text|如果Python在PATH变量中，另一个有用但简单的解决方案可能是在下载之后重新启动计算机。在将Python下载到新机器上时，这是我通常会犯的错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374903|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Another helpful but simple solution might be restarting your computer after doing the download if Python is in the PATH variable. This has been a mistake I usually make when downloading Python onto a new machine.

blocks|key|2696555|text|如果卸载，然后重新安装，并在CLI中运行'python‘，请确保在安装后打开一个新的CMD，以便识别'python’。“‘py”可能会被旧的CLI识别，因为它与任何版本都没有关联。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696556|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you uninstalled then re-installed, and running 'python' in CLI, make sure to open a new CMD after your installation for 'python' to be recognized. 'py' will probably be recognized with an old CLI because its not tied to any version.

blocks|key|298819|text|选项1:在安装过程中选择add+var，选项2:转到C：\用户->+AppData+(隐藏文件)->Local\Python\Python38-32(取决于安装的版本)\脚本复制路径并添加到env路径。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298820|对我来说，这条路奏效了:+C:\Users\Username\AppData\Local\Programs\Python\Python38-32\Scripts|298821|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Option 1 : Select on add environment var during installation
Option 2 : Go to C:\Users-> AppData (hidden file) -> Local\Programs\Python\Python38-32(depends on version installed)\Scripts
Copy path and add to env vars path.

For me this path worked : C:\Users\Username\AppData\Local\Programs\Python\Python38-32\Scripts

blocks|key|2696601|text|在Python中安装了Server+2019之后，Python指令就更加混乱了。我发现的实际路径如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696602|C:\Program+Files+(x86)\Microsoft+Visual+Studio\Shared\Python37_64|code-block|syntax|javascript|2696603|脚本使用Execute命令运行：|2696604|Declare+@script+nvarchar(max)=N'print(11-2)'+execute+sp_execute_external_script+@language+=+N'Python',+@script+=+@script|2696605|还有更多关于SQL2019版本Python的文档。有一条语句建议仅从git+(https://www.github.com/Microsoft/sqlmutils)上的sqlmutils-x.zip下载中使用PIP，但有一个警告。目前，这只适用于R，而不适用于Python+(Anaconda，因此也适用于pip)。Python在SQL上工作，但是pip还不可用。(11/25/2019)|offset|length|2696606|如果发生这种情况，最好能得到一个更新。|2696607|entityMap|0|LINK|mutability|MUTABLE|url|https://www.github.com/Microsoft/sqlmutils^0|0|0|0|0|13|16|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@$M|13|N|14|1|15]]|A|$]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

It was a bit more confusing with the Python instructions once SQL Server 2019 was installed with Python. The actual path I find is as follows:

<pre><code>C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64
</code></pre>

Scripts run with an Execute command:

<pre><code>Declare @script nvarchar(max)=N'print(11-2)' execute sp_execute_external_script @language = N'Python', @script = @script
</code></pre>

There is additional documentation in reference to SQL 2019's version of Python. There is a statement that recommends PIP be used only from a download of sqlmutils-x.x.x.zip located on git (<a href="https://www.github.com/Microsoft/sqlmutils" rel="nofollow noreferrer">https://www.github.com/Microsoft/sqlmutils</a>) But there is a caveat. Currently this only works for R and not for Python (Anaconda and consequently pip). Python over SQL works but pip is not yet available. (11/25/2019)

Would be great to get an update when this occurs.

So I have recently installed Python Version 2.7.5 and I have made a little loop thing with it but the problem is, when I go to cmd and type <code>python testloop.py</code> I get the error: 

<blockquote>
 'python' is not recognized as an internal or external command
</blockquote>

I have tried setting the path but no avail.

Here is my path:

<blockquote>
 C:\Program Files\Python27
</blockquote>

As you can see, this is where my Python is installed. I don't know what else to do. Can someone help?

'python' is not recognized as an internal or external command

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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因此，我最近安装了PythonVersion2.7.5，我用它做了一个小循环，但问题是，当我进入cmd并键入python testloop.py时，就会得到错误：“‘python”不被识别为内部或外部命令。我试过设置这条路，但没有结果。这是我的道路：C：\程序文件\Python27 27如您所见，这里是安装Python的地方。我不知道还能做什么。有人能帮忙吗？

问“‘python”不被识别为内部或外部命令。
EN

回答 15

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问“‘python”不被识别为内部或外部命令。EN

回答 15

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问“‘python”不被识别为内部或外部命令。
EN