I was wondering if anyone could guide me to obtain a kind of document that specifically contains all syntax of CPLEX library on Python 2.7. and probably an example to show the arguments.
The syntax I am looking for is that I need to see just one or a range of constraints, but the following command presents all the model:
print(mdl.export_to_string())
I need to only see constraints e.g. in range 10 to 20.
Thanks,
The documentation for docplex.mp.model.Model is at http://ibmdecisionoptimization.github.io/docplex-doc/mp/docplex.mp.model.html. And the rest of the documentation is available from http://ibmdecisionoptimization.github.io/docplex-doc/.
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For a program i have to reformat a dot file in Haskell to adjust the layout of its tree/content. I decided to use https://hackage.haskell.org/package/graphviz-2999.20.1.0/docs/Data-GraphViz.html , but i cant find simple tutorials and the documentation confuses me, namely:
1 . It contains a function: dotToGraph, which reads: "A pseudo-inverse to graphToDot; "pseudo" in the sense that the original node and edge labels aren't able to be reconstructed."
I do need to retain the names of the nodes and edges, which i suppose are the labels mentioned here? but it seems weird that it cannot do this. It also does not take in a file name or string for the dot text, so i assume this is the wrong function.
2 . There also seems to be a parseDot function/class that comes with the package, but i cant find clear documentation for its use. (see: https://hackage.haskell.org/package/graphviz-2999.20.1.0/docs/Data-GraphViz-Parsing.html#t:ParseDot)
Can you recommend me a simple overview/summary/online example for doing this? Should i be using a different function? I have only recently started using Haskell, so the package documentation is sometimes difficult to decipher for me.
It would help a great deal, thanks!
I'm currently going through my project in Jetbrains Pycharm 2017.1.5, documenting all my python 3.6 classes and methods, and several things stand out to me about the docstring format.
I want to link to other methods / functions / classes from some of the docstrings, but I cannot figure out how to do this. The documentation for restructuredText is very, very extensive, but it doesn't say anything about referencing other docstrings with Pycharm. In fact, the vast majority of the snippets from that page do not even work in Pycharm. (Why is that?)
I've managed to find that you can use :class:`<class_name>` to reference a class, but :class:`<class.method>`does not work, and similarly named constructs like :func:`<func_name>` do not create a hyperlink. I've also seen :ref:`<name>` come up, but that one doesn't work either.
(I would switch to Epytext (it has everything I want, plus it's much simpler) in a heartbeat if not for this error: You need configured Python 2 SDK to render Epydoc docstrings in the Ctrl + Q frame.)
It would also be extremely helpful if there was a way to inherit the docstring in subclasses / overridden methods. Pycharm does this automatically if you leave the docstring blank, which makes me think it is possible to do it manually. But, again, I can't find any information on it.
It's turning out to be mind-blowingly complicated to do something so, so simple. So, any help will be appreciated!
I want to link to other methods / functions / classes from some of the docstrings, but I cannot figure out how to do this.
You're correct that the reStructuredText documentation does not cover this, because it's not a feature of reStructuredText.
Likely you are (explicitly, or implicitly via some tool) using the Sphinx system – a superset of Docutils – to allow (among many other features) references between different docstrings.
Sphinx defines several Docstring “roles” (the :foo: before the backtick-quoted text) for different purposes:
doc, a reference to an entire document.
ref, an arbitrary cross-reference.
… many others.
For specifically Python code, the “domain” py has its own specific set of roles for Python code docstrings:
:py:mod:
Reference a module; a dotted name may be used. This should also be used for package names.
:py:func:
Reference a Python function; dotted names may be used. The role text needs not include trailing parentheses to enhance readability; they will be added automatically by Sphinx if the add_function_parentheses config value is True (the default).
:py:data:
Reference a module-level variable.
:py:const:
Reference a “defined” constant. This may be a Python variable that is not intended to be changed.
:py:class:
Reference a class; a dotted name may be used.
:py:meth:
Reference a method of an object. The role text can include the type name and the method name; if it occurs within the description of a type, the type name can be omitted. A dotted name may be used.
:py:attr:
Reference a data attribute of an object.
:py:exc:
Reference an exception. A dotted name may be used.
:py:obj:
Reference an object of unspecified type.
I am trying to use Spark LuceneRDD with Record Linkage concept from the link.
I did all the steps mentioned in the link but I am getting the error
Error: No implicit view available for String => org.apache.lucene.document.Document
I tried by adding lucene jar for spark shell but I am still getting the same error.
Any help is appreciated.
Adding Lucene jars will not help you here. The problem is, that some functionality is using implicit features of Scala. What it means, it should be some mapping function that will transform String into Lucene document.
When I looked over github, I found one implicit thing that will do the conversion - https://github.com/zouzias/spark-lucenerdd/blob/master/src/main/scala/org/zouzias/spark/lucenerdd/package.scala
So, you just need to add import to your code, something like this:
import org.zouzias.spark.lucenerdd._
or even more precisely, if you just need only 1 conversation (could be not your case however)
import org.zouzias.spark.lucenerdd.stringToDocument
I try to follow the Antlr4 reference book, with the Python3 target, but I got stuck in the calculator example. On the Antlr4 docs it says
The Python implementation of AntLR is as close as possible to the Java one, so you shouldn't find it difficult to adapt the examples for Python
but I don't get it yet.
The java code visitor has a .visit method and in python I don't have this method. I think it's because in java the visit method had parameter overloads of the tokens. In python we have visitProg(), visitAssign(), visitId() etc. But now I can't write value = self.visit(ctx.expr()) because we don't know what visit to call?
Or am I missing an instruction somewhere?
Looks like sometime in the last 3+ years this was fixed. I generated a parser from a grammar and targeted Python 3, using:
antlr4 -Dlanguage=Python3 -no-listener -visitor mygrammar.g4
It generates a visitor class that subclasses ParseTreeVisitor, which is a class in the antlr4-python3-runtime. Looking at the ParseTreeVisitor class, there is a visit method.
For those interested in working through the The Definitive ANTLR 4 Reference using Python, the ANTLR4 documentation points you towards this github repo:
https://github.com/jszheng/py3antlr4book
The Python2/3 targets do not yet have a visitor implemented. I tried to implement it myself, and a pull request is send to that antlr guy to see if I did it correctly. Follow the pull request here: https://github.com/antlr/antlr4-python3/pull/6
I'm a newbie to autoconf, and found out that a call of the macro AC_PROG_CC checks for the suffixes of executables and object files. Now I want to use the results of these checks and replace them in my Makefile.in, but there is no adequate documentation or mentioning in the autoconf docs on how to use this.
I'm also having the general problem: Which macro gives me which variables, and where is a reference to get know about?
Thanks for any help.
The variables you are looking for are #EXEEXT# and #OBJEXT#.
This link takes you to the index of all the output variables from the Autoconf manual.
Unfortunately there's no easy table of which ones are defined by which macros, you just have to read the descriptions.