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Category Archives: Python
3D Printing a dome house
I’ve ported most of Geodome codes in Python 3.4. I’ll release the program under GPLv3 license soon. The program requires Python 3.x and OpenSCAD. Assembly diagram of domes
Posted in GNU/Linux, Python, Science and technologies
Tagged engineering, geodesic dome, Geodome, house project, python 3.x
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Extracting numbers using regular expression
It took hours to understand how the regular expression works. I briefly explains the symbols in the codes. . any single character ? zero or one of the previous character + one or more of the previous character * zero … Continue reading
Build IPython for Python 3.x
I use IPython as SymPy interface which serves as command-line CAS (Computer Algebra System) application. It’s one of critical software I depend on whenever I study mathematics. I decided to uprade IPython for Python 3.x because I felt making Python … Continue reading
Posted in GNU/Linux, Python
Tagged CAS, Devuan, ipython3, matplotlib, module installation, numpy, pip3, python-pip3, python3.4, SymPy
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Starting ipython for interactive sympy
$ ipython –pylab Python 2.7.10+ (default, Oct 10 2015, 09:11:24) Type “copyright”, “credits” or “license” for more information. IPython 2.3.0 — An enhanced Interactive Python. ? -> Introduction and overview of IPython’s features. %quickref -> Quick reference. help -> Python’s … Continue reading
ztouch – create empty files
Out of necessity I built a simple program that create many empty files. I put few examples how to use it in the code. Below command create exactly 1,000 empty files which mimic Nikon D200’s image files. The first file … Continue reading
Posted in GNU/Linux, Python
Tagged command line utility, create empty files, Debian Wheezy, programming, python, touch, ztouch
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sympy – find equations for the lines that are tagent and normal to the curve at (1, 2).
Chapter 2 Practice Exercises, p183
Posted in Python
Tagged Calculus, mathematics, normal line, python, SymPy, tangent line
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sympy – changing graph color of plot()
plot() handles color names for RGB color codes. SymPy document doesn’t explain it clearly or sample codes don’t exit. Here is another example.
