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This is awesome; let me direct HN'ers to Sage (http://www.sagemath.org http://www.sagemath.org), which uses SymPy, and which is also very cool. It is (mostly?)

This is awesome; let me direct HN'ers to Sage (http://www.sagemath.org http://www.sagemath.org), which uses SymPy, and which is also very cool. It is (mostly?) written in Python, is available as a library, and it always welcomes contributors. EDIT: I believed that Sage and SymPy duplicated a lot of the same functionality, but as two commenters pointed out (and as I verified for myself), Sage relies on SymPy and other libraries for its engine whenever it can. I stand corrected!

walrus 15y ago
Sage and SymPy are not direct competitors. Sage is a Python interface to other math software. SymPy is closer to one of Sage's dependencies, Maxima. On the "motivation" page you linked, they actually state that they're working toward making SymPy a drop-in replacement for Maxima in Sage.
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rocha 15y ago
Sage is a large collection of different mathematical python packages. For symbolic math it uses sympy, which is linked by the OP. From your comment, I thought that Sage was a replacement for sympy.
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- muuh-gnu 15y ago
  > For symbolic math it uses sympy My last information (could be a bit dated) is that Sage is using Maxima, has this been changed lately in favor of SymPy?
  - rocha 15y ago
    I think both packages are included, but sympy somewhat the preferred for new versions.