sidereal.py
In the human world of the command line, angles will always be represented in degrees, optionally with minutes and seconds, in one of these forms:
NN.NNNd NNdNN.NNNm NNdNNmNN.NNNs
NN.NNN
NN
Examples:
0.0036782d 14d08m 14d08.37m 131d50m03.0017s