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Linux daemon using Python daemon with PID file and logging

The python-daemon package ( PyPI listing , Pagure repo ) is very useful. However, I feel it has suffered a bit from sparse documentation, an...


Small matplotlib tip

While making plots using matplotlib, I kept getting this error message when trying to write a string to a certain location in the plot:
UserWarning: findfont: Font family ['cmsy10'] not found.
Turns out, the fix is simple; add the following:

matplotlib.rc('text', usetex=True)
matplotlib is a wonderful Python package for doing plotting and analysis. It uses numpy.  Used interactively with the PyLab module, it feels close to Matlab. If you are a "scientific" user, I highly recommend checking it out.