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Spyder (previously known as Pydee) is an open-source Python development environment providing MATLAB-like features in a simple and light-weighted software.

Spyder is part of spyderlib, a Python module based on PyQt4, pyflakes, rope and sphinx providing powerful PyQt4 widgets like source code editors, Python console (easy to embed in your own application: see this example) or GUI-based dictionary, lists/tuples and NumPy array editors.

This project is part of a larger effort to promote and facilitate the use of Python for scientific and enginering software development. The popular Python distributions Python(x,y) and WinPython also contribute to this plan.

 Spyder 2.3.4

Free to download


MIT License

Pierre Raybaut - Developed and maintained by the Spyder Development Team


System Requirements
Python 2.x



Selected Reviews:

Features include:

  • Syntax coloring for Python, C/C++ and Fortran files
  • Powerful dynamic code introspection features (powered by rope):
    • Code completion and calltips
    • Go to an object definition with a mouse click
  • Class and function browser
  • Occurrence highlighting
  • To-do lists (TODO, FIXME, XXX)
  • Get errors and warnings on the fly (provided by pyflakes)
  • Breakpoints and conditional breakpoints to use with the python debugger (pdb)
  • To easily interact with your code as you progress, Spyder lets you
  • Open as many Python and Ipython consoles as you want
  • Run a whole script or any portion of it from the Editor
  • Have code completion and automatic link to documentation through the Object Inspector
  • Execute all consoles in a separate process so they don't block the application
  • With the Variable Explorer you can browse and analyze all the results your code is producing, and also
  • Edit variables with Spyder's Array Editor, which has support for a lot of data types (numbers, strings, lists, arrays, dictionaries)
  • Have multiple Array Editors open at once, thus allowing to compare variable contents
  • Import/Export data from/to a lot of file types (text files, numpy files, Matlab files)
  • Generate 2D plots of list and arrays
  • View local variables while you're debugging
  • Quick access to documentation is a must for every programmer, either to explore new libraries or to remember how to use a piece of code. Spyder gives you the docs in three different formats:
  • Rich text (powered by Sphinx)
  • Plain text, to use when rich text is not working
  • Source code, to look at the internal implementation
  • History log
  • Array editor
  • Project explorer
  • Pylint integration

Spyder in action

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Last Updated Monday, June 08 2015 @ 04:42 PM EDT

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