blocks|key|1219712|text|在导入cvxopt之前，您需要先导入numpy。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1219713|import+numpy
import+cvxopt|code-block|syntax|javascript|1219714|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|$]]

You need to import numpy first before importing cvxopt.

<pre><code>import numpy
import cvxopt
</code></pre>

blocks|key|1072482|text|CVXOPT包需要numpy%2Bmkl，您可以尝试卸载numpy包并从http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy重新安装numpy%2Bmkl，然后导入CVXOPT，它将工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1072483|entityMap|0|LINK|mutability|MUTABLE|url|http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy^0|Y|1C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The package CVXOPT requires numpy+mkl, you can try uninstall the numpy package and reinstall numpy+mkl from <a href="http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy" rel="noreferrer">http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy</a>, then importing the CVXOPT, it will work.

blocks|key|1422342|text|需要将YourPythonPath\Library\bin添加到PATH环境变量中。在我的例子中，它是C:\Python36-64\Library\bin|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1422343|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|$]]

You need to add YourPythonPath\Library\bin to your PATH environment variable. In my case it is C:\Python36-64\Library\bin

blocks|key|1422173|text|dll加载问题的原因很可能是另一种情况。最新的Anaconda版本(例如Anaconda+5.0.1)有MKL支持的Numpy。这是而不是的问题。我通过使用conda列表查看已安装的包来验证这一点。问题在于cvxopt需要一些dll，这些dll位于目录中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1422174|C:\Anaconda3\envs\foo\Library\mingw-w64\bin++|code-block|syntax|javascript|1422175|如果您安装了Anaconda并在系统路径上执行而不是注册Anaconda+python+(这是他们建议的设置)，然后使用Anaconda+prommpt设置一个新的环境(+cvxopt的当前版本请注意，您需要Pythona3.5)|1422176|conda+create+-n+foo+python=3.5
activate+foo

conda+install+cvxopt|1422177|以及进口cvxopt|1422178|(foo)+C:\tmp>python
Python+3.5.4+%7CAnaconda,+Inc.%7C+(default,+Nov++8+2017,+14:34:30)+[MSC+v.1900+
64+bit+(AMD64)]+on+win32
Type+"help",+"copyright",+"credits"+or+"license"+for+more+information.
>>>+import+cvxopt
>>>+|1422179|一切都应该正常。如果您检查与Anaconda相关的路径设置，您将发现|1422180|C:\Anaconda3\envs\foo;
C:\Anaconda3\envs\foo\Library\mingw-w64\bin;
C:\Anaconda3\envs\foo\Library\usr\bin;
C:\Anaconda3\envs\foo\Library\bin;
C:\Anaconda3\envs\foo\Scripts;|1422181|如果您现在从路径中删除C：\Anaconda3+3\envs\foo\Library\mingw-W64\bin，那么您将回到问题所在。|1422182|C:\tmp>python
Python+3.5.4+%7CAnaconda,+Inc.%7C+(default,+Nov++8+2017,+14:34:30)+[MSC+v.1900+
64+bit+(AMD64)]+on+win32
Type+"help",+"copyright",+"credits"+or+"license"+for+more+information.
>>>+import+cvxopt
Traceback+(most+recent+call+last):
++File+"<stdin>",+line+1,+in+<module>
++File+"C:\Anaconda3\envs\tf14\lib\site-packages\cvxopt\__init__.py",+line+32,+in+<module>
++++import+cvxopt.base
ImportError:+DLL+load+failed:+The+specified+module+could+not+be+found.
>>>|1422183|然而，还有一个与PyCharm相关的问题:如何在PyCharm中正确地使用Anaconda？PyCharm无法按照环境的要求处理其他路径。至少不能跳出盒子，否则我就找不到合适的办法。欢迎任何建议。|1422184|entityMap^0|1U|3|0|0|N|3|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1C|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|1E|8|@]|D|@]|E|$]]|$1|U|3|V|5|H|7|1F|8|@]|D|@]|E|$I|J]]|$1|W|3|X|5|6|7|1G|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|H|7|1H|8|@]|D|@]|E|$I|J]]|$1|10|3|11|5|6|7|1I|8|@]|D|@]|E|$]]|$1|12|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|13|$]]

The reason for the dll load problem is most likely a very different one. The most up to date Anaconda version (e.g. Anaconda 5.0.1) has Numpy with MKL support. This is NOT the issue. I verified this by looking at the installed packages using conda list. The issue is the fact that cvxopt requires some dlls, which are in the directory 

<pre><code>C:\Anaconda3\envs\foo\Library\mingw-w64\bin 
</code></pre>

If you install Anaconda and do NOT register Anaconda python on the system path (which is their suggested setup anyway) and then use the Anaconda prommpt to set up a new environment (note for current verison of cvxopt you need Python 3.5)

<pre><code>conda create -n foo python=3.5
activate foo

conda install cvxopt
</code></pre>

and importing cvxopt

<pre><code>(foo) C:\tmp&gt;python
Python 3.5.4 |Anaconda, Inc.| (default, Nov 8 2017, 14:34:30) [MSC v.1900 
64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import cvxopt
&gt;&gt;&gt; 
</code></pre>

all should work fine. If you check the Anaconda related path settings you will find 

<pre><code>C:\Anaconda3\envs\foo;
C:\Anaconda3\envs\foo\Library\mingw-w64\bin;
C:\Anaconda3\envs\foo\Library\usr\bin;
C:\Anaconda3\envs\foo\Library\bin;
C:\Anaconda3\envs\foo\Scripts;
</code></pre>

If you now remove C:\Anaconda3\envs\foo\Library\mingw-w64\bin from the path you are back to the problem 

<pre><code>C:\tmp&gt;python
Python 3.5.4 |Anaconda, Inc.| (default, Nov 8 2017, 14:34:30) [MSC v.1900 
64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import cvxopt
Traceback (most recent call last):
 File "&lt;stdin&gt;", line 1, in &lt;module&gt;
 File "C:\Anaconda3\envs\tf14\lib\site-packages\cvxopt\__init__.py", line 32, in &lt;module&gt;
 import cvxopt.base
ImportError: DLL load failed: The specified module could not be found.
&gt;&gt;&gt;
</code></pre>

However there is another issue, related to PyCharm: how to actually use Anaconda envs properly with PyCharm? PyCharm cannot handle additional paths as required by an environment. At leat not out of the box, or I did not find a way to properly do it. Any suggestions are welcome.

blocks|key|1072621|text|我修好了。只需将路径C：\Python36+36\Library\bin添加到path环境变量，与说的相同。当我导入cvxopt库时，它运行base.cp36-win_+and+64文件，这个文件需要bin文件夹中的dll。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1072622|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 fixed it. Just add path C:\Python36\Library\bin to PATH environment variable the same as Artashes Khachatryan said.
When I imported cvxopt library, it run base.cp36-win_amd64 file and this file requires dll in bin folder.

blocks|key|1219686|text|cvxopt.base构建为pyd文件(本质上是Windows+)。它应该位于"C:\Program+(X86)\Python\site-packages\cvxopt“中。检查这个目录是否在您的PYTHONPATH中。如果不是，可以从命令行将目录追加到路径中，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1219687|import+sys
sys.path.append("C:\Program+Files+(x86)\Python\lib\site-packages\cvxopt")|code-block|syntax|javascript|1219688|希望这能帮上忙！|1219689|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

cvxopt.base is built as a pyd file (essentially a Windows DLL). It should be located in "C:\Program Files (x86)\Python\lib\site-packages\cvxopt". Check that this directory is in your PYTHONPATH. If it isn't, you can append the directory to your path from the command line as follows:

<pre><code>import sys
sys.path.append("C:\Program Files (x86)\Python\lib\site-packages\cvxopt")
</code></pre>

Hope that helps!

blocks|key|1072518|text|在导入cvxopt模块时，我使用了相同的ImportError。由于cvxopt支持python+2.7-3.5版本，所以我首先使用python+3.5创建了一个conda虚拟环境，具体步骤如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1072519|打开Anaconda提示|ordered-list-item|1072520|conda创建-n+python=3.5|1072521|conda激活|1072522|1072523|1072524|在激活的conda环境中，使用命令安装cvxopt包:+conda+install+cvxopt|1072525|这将安装cvxopt包和所有依赖项。|1072526|安装后，通过在Anaconda提示符中键入spyder打开spyder，这将使用您创建的虚拟环境打开Spyder。|1072527|在此之后，cvxopt包将在没有任何错误的情况下工作。|1072528|注意:我一直在试图打开Pycharm中的虚拟环境，但是没有工作，最后切换到spyder。|1072529|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|Y|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|Z|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

I had the same issue of ImportError while importing cvxopt module. Since cvxopt supports python version 2.7-3.5, I created a conda virtual environment first with python 3.5 using the steps below:

<ol>
<li>open Anaconda Prompt</li>
<li>conda create -n python=3.5</li>
<li>conda activate </li>
</ol>

In the activated conda environment install cvxopt package using command:
conda install cvxopt

This will install the cvxopt package and all the dependencies.

After installation open spyder by typing spyder in the Anaconda prompt and this will open Spyder with the virtual environment that you have created. 

After this cvxopt package will work without any errors. 

Note: I have been trying to open the virtual environment in Pycharm but that didn't work and in the end switched to spyder.

blocks|key|1422259|text|我也遇到了同样的问题，解决的方法是迁移到python3.5(通过创建一个虚拟环境)。请注意，不幸的是，cvxopt不适用于python3.6。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1422260|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 had the same issue and what fixed it was to move to python 3.5 (by creating a virtual environment). Note that cvxopt does not work unfortunately with python 3.6.

blocks|key|1219843|text|在与Conda环境结合使用PyCharm+2018.1时，我遇到了这个问题。当我从Anaconda终端运行以下程序时，一切正常：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1219844|conda+activate+cvxopt_test
python+-c+"import+cvxopt"|code-block|syntax|javascript|1219845|但是，当在import+cvxopt中运行PyCharm时，会引发您描述的错误。正如Daniel在他的anwser中提到的，这与windows路径变量(os.environ['PATH'])有关。在运行代码时，PyCharm不添加cvxopt文件夹。对于我来说，避免错误的最小工作示例是：|offset|length|style|CODE|1219846|import+os
#+add+the+folder+containing+the+DLL+to+the+PATH+variable
os.environ['PATH']+%2B=+r';C:\Anaconda3\envs\foo\Library\mingw-w64\bin'|1219847|尽管以同样的方式将Daniel提到的所有文件夹添加到PATH变量中可能是明智的。|1219848|entityMap^0|0|0|5|D|23|K|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]|$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

I encountered this issue when working in PyCharm 2018.1 in combination with a Conda environment. When I run the following from the Anaconda terminal, everything works fine: 

<pre><code>conda activate cvxopt_test
python -c "import cvxopt"
</code></pre>

However, when running <code>import cvxopt</code> in PyCharm the error you describe is raised. As Daniel mentioned in his anwser, this has to do with the windows PATH variable <code>(os.environ['PATH'])</code>. Somehow PyCharm does not add the cvxopt folders when running the code. For me the minimal working example to avoid the error was:

<pre><code>import os
# add the folder containing the DLL to the PATH variable
os.environ['PATH'] += r';C:\Anaconda3\envs\foo\Library\mingw-w64\bin'
</code></pre>

Although it might be wise to add all the folders Daniel mentions to the PATH variable in the same way.

blocks|key|1219956|text|打开“系统属性”窗口，单击“高级”选项卡。|type|ordered-list-item|depth|inlineStyleRanges|entityRanges|data|1219957|单击底部的“环境变量”按钮。|1219958|在“用户变量”部分，选择“路径”并单击“编辑”。|1219959|将包含mkl_rt.dll的目录添加到路径中。|1219960|unstyled|1219961|1219962|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|P|8|@]|9|@]|A|$]]|$1|H|3|-4|5|I|7|Q|8|@]|9|@]|A|$]]|$1|J|3|-4|5|I|7|R|8|@]|9|@]|A|$]]|$1|K|3|-4|5|I|7|S|8|@]|9|@]|A|$]]]|L|$]]

<ol>
<li>Open the System Properties window and click on the Advanced tab.</li>
<li>Click the Environment Variables button at the bottom.</li>
<li>In the User variables section, select Path and click Edit.</li>
<li>Add the directory that contains mkl_rt.dll to the path. </li>
</ol>

I'm new to Python, just installed cvxopt module for my Python3.3 system (64 bit). The installation was successful, but when I typed <code>"import cvxopt"</code> in Python command line, it returned an error:

<blockquote>
 File "C:\Program Files
 (x86)\Python\lib\site-packages\cvxopt__init__.py", line 33, in
 import cvxopt.base ImportError: DLL load failed: The
 specified module could not be found.
</blockquote>

Could anyone help me on this problem? Thanks a lot!

import cvxopt.base: the specified module could not be found

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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我是Python新手，刚刚为我的Python3.3系统(64位)安装了cvxopt模块。安装是成功的，但是当我在Python命令行中输入"import cvxopt"时，它返回了一个错误：文件"C:\Program (x86)\Python\lib\site-packages\cvxopt__init__.py"，第33行，在导入cvxopt.base ImportError: DLL加载失败:找

问导入cvxopt.base:找不到指定的模块
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