blocks|key|1196457|text|您可以先执行embed+your+Python+script+in+a+C+program，然后执行MEX+the+C+program+with+MATLAB，但与将结果转储到文件相比，这可能需要大量的工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1196458|您可以使用PyMat在Python语言中调用MATLAB函数。除此之外，SciPy还有几个MATLAB的重复函数。|1196459|但是，如果需要从MATLAB运行Python脚本，可以尝试运行system命令来运行脚本，并将结果存储在一个文件中，稍后在MATLAB中读取它。|1196460|entityMap|0|LINK|mutability|MUTABLE|url|http://www.linuxjournal.com/article/8497|1|http://www.mathworks.com/support/tech-notes/1600/1605.html|2|http://claymore.engineer.gvsu.edu/~steriana/Python/pymat.html|3|http://www.scipy.org/|4|http://www.mathworks.com/access/helpdesk/help/techdoc/ref/system.html^0|6|13|0|1E|T|1|0|5|5|2|10|5|3|0|V|6|4|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]|$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]|$A|18|B|19|1|1A]]|C|$]]|$1|F|3|G|5|6|7|1B|8|@]|9|@$A|1C|B|1D|1|1E]]|C|$]]|$1|H|3|-4|5|6|7|1F|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]|T|$5|K|L|M|C|$N|U]]|V|$5|K|L|M|C|$N|W]]]]

You could <a href="http://www.linuxjournal.com/article/8497" rel="noreferrer">embed your Python script in a C program</a> and then <a href="http://www.mathworks.com/support/tech-notes/1600/1605.html" rel="noreferrer">MEX the C program with MATLAB</a> but that might be a lot of work compared dumping the results to a file.

You can call MATLAB functions in Python using <a href="http://claymore.engineer.gvsu.edu/~steriana/Python/pymat.html" rel="noreferrer">PyMat</a>. Apart from that, <a href="http://www.scipy.org/" rel="noreferrer">SciPy</a> has several MATLAB duplicate functions.

But if you need to run Python scripts from MATLAB, you can try running <a href="http://www.mathworks.com/access/helpdesk/help/techdoc/ref/system.html" rel="noreferrer">system</a> commands to run the script and store the results in a file and read it later in MATLAB.

blocks|key|1196515|text|由于Python是一种更好的粘合语言，因此从Python调用程序的MATLAB部分可能比从Python调用Python语言更容易。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1196516|查看Mlabwrap。|1196517|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Python_%2528programming_language%2529|1|http://en.wikipedia.org/wiki/MATLAB|2|http://mlabwrap.sourceforge.net/^0|2|6|0|X|6|1|0|2|8|2|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]|$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|F|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]]]

Since <a href="http://en.wikipedia.org/wiki/Python_%28programming_language%29" rel="nofollow noreferrer">Python</a> is a better glue language, it may be easier to call the <a href="http://en.wikipedia.org/wiki/MATLAB" rel="nofollow noreferrer">MATLAB</a> part of your program from Python instead of vice-versa. 

Check out <a href="http://mlabwrap.sourceforge.net/" rel="nofollow noreferrer">Mlabwrap</a>.

blocks|key|1196563|text|由于MATLAB与Java无缝集成，因此您可以使用Jython编写脚本并从MATLAB调用它(您可能必须添加一个简单的纯JKava包装器才能实际调用Jython代码)。我从来没有试过，但我不明白为什么它不能工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1196564|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/MATLAB|1|http://www.jython.org/^0|2|6|0|P|6|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Since <a href="http://en.wikipedia.org/wiki/MATLAB" rel="nofollow">MATLAB</a> seamlessly integrates with Java, you can use <a href="http://www.jython.org/" rel="nofollow">Jython</a> to write your script and call that from MATLAB (you may have to add a thin pure JKava wrapper to actually call the Jython code). I never tried it, but I can't see why it won't work.

blocks|key|1196653|text|最简单的方法是使用MATLAB的system函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1196654|因此，基本上，您将在MATLAB上执行Python函数，就像在命令提示符(Windows)或shell+(Linux)上所做的那样：|1196655|system('python+pythonfile.py')|code-block|syntax|javascript|1196656|上面的代码用于简单地运行Python文件。如果你想运行一个Python函数(并给它一些参数)，那么你需要类似这样的东西：|1196657|system('python+pythonfile.py+argument')|1196658|举一个具体的例子，取Adrian对这个问题的答案中的Python代码，并将其保存到Python文件中，即test.py。然后将此文件放在您的MATLAB目录中，并在MATLAB上运行以下命令：|style|CODE|1196659|system('python+test.py+2')|1196660|你会得到4或者2%5E2作为你的输出。|1196661|注意:+MATLAB在当前的MATLAB目录中查找您使用system命令指定的任何Python文件。|1196662|这可能是解决您的问题的最简单的方法，因为您只需使用MATLAB中的现有函数来执行您的命令。|1196663|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/MATLAB|1|http://www.mathworks.com/help/techdoc/ref/system.html^0|9|6|0|G|6|1|0|0|0|0|0|1G|7|0|0|0|S|6|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]|$A|1E|B|1F|1|1G]]|C|$]]|$1|D|3|E|5|6|7|1H|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1I|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1J|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|1K|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|1L|8|@$A|1M|B|1N|Q|R]]|9|@]|C|$]]|$1|S|3|T|5|H|7|1O|8|@]|9|@]|C|$I|J]]|$1|U|3|V|5|6|7|1P|8|@]|9|@]|C|$]]|$1|W|3|X|5|6|7|1Q|8|@$A|1R|B|1S|Q|R]]|9|@]|C|$]]|$1|Y|3|Z|5|6|7|1T|8|@]|9|@]|C|$]]|$1|10|3|-4|5|6|7|1U|8|@]|9|@]|C|$]]]|11|$12|$5|13|14|15|C|$16|17]]|18|$5|13|14|15|C|$16|19]]]]

The simplest way to do this is to use <a href="http://en.wikipedia.org/wiki/MATLAB" rel="noreferrer">MATLAB</a>'s <a href="http://www.mathworks.com/help/techdoc/ref/system.html" rel="noreferrer">system</a> function. 

So basically, you would execute a Python function on MATLAB as you would do on the command prompt (Windows), or shell (Linux):

<pre><code>system('python pythonfile.py')
</code></pre>

The above is for simply running a Python file. If you wanted to run a Python function (and give it some arguments), then you would need something like:

<pre><code>system('python pythonfile.py argument')
</code></pre>

For a concrete example, take the Python code in Adrian's answer to this question, and save it to a Python file, that is <code>test.py</code>. Then place this file in your MATLAB directory and run the following command on MATLAB:

<pre><code>system('python test.py 2')
</code></pre>

And you will get as your output 4 or 2^2.

Note: MATLAB looks in the current MATLAB directory for whatever Python file you specify with the <code>system</code> command.

This is probably the simplest way to solve your problem, as you simply use an existing function in MATLAB to do your bidding.

blocks|key|1412002|text|这似乎是将函数从Python“隧穿”到MATLAB的合适方法|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1412003|http://code.google.com/p/python-matlab-wormholes/|1412004|最大的优点是您可以使用它来处理ndarray，这是前面建议的程序的标准输出所不能做到的。(如果您认为这是错误的，请纠正我-这将为我省去很多麻烦:-)|1412005|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Python_%2528programming_language%2529|1|http://en.wikipedia.org/wiki/MATLAB|2^0|8|6|0|J|6|1|0|0|1D|2|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|E]]]]

This seems to be a suitable method to "tunnel" functions from <a href="http://en.wikipedia.org/wiki/Python_%28programming_language%29" rel="nofollow">Python</a> to <a href="http://en.wikipedia.org/wiki/MATLAB" rel="nofollow">MATLAB</a>:

<a href="http://code.google.com/p/python-matlab-wormholes/" rel="nofollow">http://code.google.com/p/python-matlab-wormholes/</a>

The big advantage is that you can handle ndarrays with it, which is not possible by the standard output of programs, as suggested before. (Please correct me, if you think this is wrong - it would save me a lot of trouble :-) )

blocks|key|1412057|text|尝试使用这个MEX文件从MATLAB实际调用Python，而不是像其他人建议的那样调用Python。它提供了相当不错的集成：http://algoholic.eu/matpy/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1412058|你可以很容易地做这样的事情：|1412059|[X,Y]=meshgrid(-10:0.1:10,-10:0.1:10);
Z=sin(X)%2Bcos(Y);
py_export('X','Y','Z')
stmt+=+sprintf(['import+matplotlib\n'+...
'matplotlib.use(''Qt4Agg'')\n'+...
'import+matplotlib.pyplot+as+plt\n'+...
'from+mpl_toolkits.mplot3d+import+axes3d\n'+...
'f=plt.figure()\n'+...
'ax=f.gca(projection=''3d'')\n'+...
'cset=ax.plot_surface(X,Y,Z)\n'+...
'ax.clabel(cset,fontsize=9,inline=1)\n'+...
'plt.show()']);
py('eval',+stmt);|code-block|syntax|javascript|1412060|entityMap|0|LINK|mutability|MUTABLE|url|http://algoholic.eu/matpy/^0|1Q|Q|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

Try this MEX file for ACTUALLY calling Python from MATLAB not the other way around as others suggest. It provides fairly decent integration : <a href="http://algoholic.eu/matpy/" rel="noreferrer">http://algoholic.eu/matpy/</a>

You can do something like this easily:

<pre><code>[X,Y]=meshgrid(-10:0.1:10,-10:0.1:10);
Z=sin(X)+cos(Y);
py_export('X','Y','Z')
stmt = sprintf(['import matplotlib\n' ...
'matplotlib.use(''Qt4Agg'')\n' ...
'import matplotlib.pyplot as plt\n' ...
'from mpl_toolkits.mplot3d import axes3d\n' ...
'f=plt.figure()\n' ...
'ax=f.gca(projection=''3d'')\n' ...
'cset=ax.plot_surface(X,Y,Z)\n' ...
'ax.clabel(cset,fontsize=9,inline=1)\n' ...
'plt.show()']);
py('eval', stmt);
</code></pre>

blocks|key|1196925|text|正如@dgorissen所说，Jython是最简单的解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196926|只需从homepage安装Jython即可。|offset|length|1196927|然后：|1196928|javaaddpath('/path-to-your-jython-installation/jython.jar')

import+org.python.util.PythonInterpreter;

python+=+PythonInterpreter;+%25#+takes+a+long+time+to+load!
python.exec('import+some_module');
python.exec('result+=+some_module.run_something()');
result+=+python.get('result');|code-block|syntax|javascript|1196929|有关示例，请参阅the+documentation。|1196930|注意:我从来没有实际使用过Jython，似乎人们可能从CPython中知道的标准库并没有在Jython中完全实现！|1196931|我测试的小示例运行得很好，但是您可能会发现您必须将Python代码目录添加到sys.path。|style|CODE|1196932|entityMap|0|LINK|mutability|MUTABLE|url|http://www.jython.org/downloads.html|1|http://www.jython.org/jythonbook/en/1.0/JythonAndJavaIntegration.html#utilizing-pythoninterpreter^0|0|3|8|0|0|0|0|8|H|1|0|0|12|8|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@$D|16|E|17|1|18]]|A|$]]|$1|F|3|G|5|6|7|19|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|1A|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1B|8|@]|9|@$D|1C|E|1D|1|1E]]|A|$]]|$1|O|3|P|5|6|7|1F|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1G|8|@$D|1H|E|1I|S|T]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]|12|$5|X|Y|Z|A|$10|13]]]]

As @dgorissen said, Jython is the easiest solution.

Just install Jython from the <a href="http://www.jython.org/downloads.html" rel="noreferrer">homepage</a>.

Then:

<pre><code>javaaddpath('/path-to-your-jython-installation/jython.jar')

import org.python.util.PythonInterpreter;

python = PythonInterpreter; %# takes a long time to load!
python.exec('import some_module');
python.exec('result = some_module.run_something()');
result = python.get('result');
</code></pre>

See <a href="http://www.jython.org/jythonbook/en/1.0/JythonAndJavaIntegration.html#utilizing-pythoninterpreter" rel="noreferrer">the documentation</a> for some examples.

Beware: I never actually worked with Jython and it seems that the standard library one may know from CPython is not fully implemented in Jython!

Small examples I tested worked just fine, but you may find that you have to prepend your Python code directory to <code>sys.path</code>.

blocks|key|1197016|text|关于MATLAB的system()函数，有一个鲜为人知(和很少的documented)的事实:在unixoid系统上，它使用在启动MATLAB时环境变量SHELL或MATLAB_SHELL中给出的任何解释器。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1197017|SHELL='/usr/bin/python'+matlab|code-block|syntax|javascript|1197018|任何后续的system()调用都将使用Python而不是您的默认外壳作为解释器。|1197019|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/MATLAB|1|http://www.mathworks.de/de/help/matlab/ref/matlabunix.html%2520documented|2|http://en.wikipedia.org/wiki/Python_%2528programming_language%2529^0|9|8|24|5|2A|C|2|6|0|W|A|1|0|0|5|8|J|6|2|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]|$9|18|A|19|1|1A]]|E|$]]|$1|F|3|G|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1C|8|@$9|1D|A|1E|B|C]]|D|@$9|1F|A|1G|1|1H]]|E|$]]|$1|M|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]|W|$5|P|Q|R|E|$S|X]]]]

A little known (and little <a href="http://www.mathworks.de/de/help/matlab/ref/matlabunix.html%20documented" rel="nofollow">documented</a>) fact about <a href="http://en.wikipedia.org/wiki/MATLAB" rel="nofollow">MATLAB</a>'s <code>system()</code> function: On unixoid systems it uses whatever interpreter is given in the environment variable <code>SHELL</code> or <code>MATLAB_SHELL</code> at the time of starting MATLAB. So if you start MATLAB with

<pre><code>SHELL='/usr/bin/python' matlab
</code></pre>

any subsequent <code>system()</code> calls will use <a href="http://en.wikipedia.org/wiki/Python_%28programming_language%29" rel="nofollow">Python</a> instead of your default shell as an interpreter.

blocks|key|1197113|text|在Matlab2014b中，python库可以被称为directly+from+matlab。所有数据包名都会添加前缀py.：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1197114|>>+wrapped+=+py.textwrap.wrap("example")

wrapped+=+

++Python+list+with+no+properties.

++++['example']|code-block|syntax|javascript|1197115|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mathworks.com/help/matlab/call-python-libraries.html^0|1N|3|Q|K|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

With Matlab 2014b python libraries can be called <a href="http://www.mathworks.com/help/matlab/call-python-libraries.html" rel="noreferrer">directly from matlab</a>. A prefix <code>py.</code> is added to all packet names:

<pre><code>&gt;&gt; wrapped = py.textwrap.wrap("example")

wrapped = 

 Python list with no properties.

 ['example']
</code></pre>

blocks|key|1197171|text|从Matlab+2014b开始，可以直接调用Python函数。使用前缀py，然后使用模块名称，最后使用函数名称，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1197172|result+=+py.module_name.function_name(parameter1);|code-block|syntax|javascript|1197173|如果您位于与Python脚本不同的工作目录中，请确保在从Matlab调用时将脚本添加到Python搜索路径。|1197174|请参阅更多详细信息here。|offset|length|1197175|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/altermarkive/Calling-Python-from-Matlab^0|0|0|0|9|4|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]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Starting from Matlab 2014b Python functions can be called directly.
Use prefix py, then module name, and finally function name like so:

<pre><code>result = py.module_name.function_name(parameter1);
</code></pre>

Make sure to add the script to the Python search path when calling from Matlab if you are in a different working directory than that of the Python script.

See more details <a href="https://github.com/altermarkive/Calling-Python-from-Matlab" rel="nofollow noreferrer">here</a>.

I need to call a Python function from MATLAB. how can I do this?

Call Python function from MATLAB

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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我需要从MATLAB中调用Python函数。我该怎么做呢？

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