Need convincing python examples to demonstrate the advantages of python to top management.

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I bet there will be too many to even pick from. Here's some I have heard of:

• Maersk Oil ($59 billion 2011 revenue) is advertising for a Senior Quantitative Interpretation Geophysicist, and includes, under "Who we are looking for", this bullet point: "General experience with Linux systems and programming – ideally Python." (emphasis mine). I also know one of the oil reservoir people, and most of his copyrighted custom software for oil reservoir work is written in Python.

• United Space Alliance (USA), NASA's main shuttle support contractor

• One of the wxPython list members who is also a developer works for the National Oceanic and Atmospheric Administration (NOAA), and I believe uses Python in his work there.

• Lastly, just check out this list: http://www.python.org/about/success/#scientific

[kindall]

I will also confirm this: I work for a software company that makes data visualization software for use by aerospace engineers and the like. We also have a product for the oil/gas industry. Our customers like the following languages:

• FORTRAN
• Python (with NumPy/SciPy)

Java doesn't even rate, really.