StackOverflow

[Aaron Meurer]

In case people missed it in the other thread, I highly recommend people to help answer SymPy questions on StackOverflow. You can go to http://stackexchange.com/filters/ and set up a filter for the SymPy tag, and it will email you new questions. Lately there are new questions almost every single day, so it would definitely help if others were answering there as well.

The questions on stackoverflow tend to be high quality and often have rather interesting use-cases (there are doozies, of course, but the worst questions are closed automatically).

Also, don't forget to upvote good questions. This gives the question higher visibility on StackOverflow, which in turn, gives SymPy higher visibility.

Aaron Meurer

[Matthew Rocklin]

I did this and was pleasantly surprised.  I found a couple of good questions about modules that I work on.  It's nice hearing how people use SymPy and provided me with ideas for future development (BTW, we should support solve for matrix expressions apparently).  

In short, it's good to get input from users.  SO seems to be exactly that.

Also, if you're into this sort of thing, it's really easy to get some serious SO karma.

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[Aaron Meurer]

The secret to getting a lot of karma is to have a very popular question or answer, like http://stackoverflow.com/a/1320317/161801. 

Aaron Meurer

To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAJ8oX-GvCJM7OC5_-%3DcoDBocsJcZejH%2B51JWArLRHXS1fR9SCQ%40mail.gmail.com.

[SAHIL SHEKHAWAT]

+1 

I did this and will try to help..It a nice idea.

[Aaron Meurer]

Another thing. When you come across questions that are bugs in SymPy, or about features that aren't implemented yet, it's good to reference them in the issues (create a new issue if they don't exist). For example, https://github.com/sympy/sympy/issues/6494#issuecomment-39629836. This gives a bump to the issues that real users care about. 

In some sense, every question is an issue. Something didn't "just work" for the person. Or it wasn't documented well enough. 

Aaron Meurer

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[Dirk Fortmeier]

Here's another one: http://stackoverflow.com/questions/22930329/how-to-implement-div-and-grad-in-sympy :)

SO is really helpful indeed for question that do not rely on much discussion. Which is the problem with my current question ... I think there are a lot of side questions to it, so I think I will post here as well.

Btw: Hello sympy community!

[Alexey U. Gudchenko]

Another variant is to use RSS feed:

http://stackoverflow.com/feeds/tag?tagnames=sympy&sort=newest

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Alexey Gudchenko

[Aaron Meurer]

An important difference is that the stack exchange filter will show you questions tagged with SymPy from any stack exchange site. These are admittedly rare, but it's not unheard of to see something on Math.SE or one of the other programming related SEs, e.g., http://math.stackexchange.com/q/37396/781.

Aaron Meurer

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[Aaron Meurer]

That one looks like a bug. sympify(ReferenceFrame('o').x) does not work.  

This really shows why it is important for all SymPy objects to follow the basic args invariants. ReferenceFrame('o') has no .args, and ReferenceFrame('o').x.args is a list (!) containing a tuple of a matrix and a ReferenceFrame.

Aaron Meurer

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