Python is currently only used with two program in SEISAN, MOPAD and xxx so if any of these program are to be used, Python must be installed. Most Linux systems will have Python installed, else follow standard instructions on Python home page and install. SEISAN currently uses version 2.7 of Python. Two extra libraries must be installed, mathplotlib and numpy. In windows they can be installed with commands
\python27\scripts\pip2.exe install matplotlib
pip2.exe install numpy
In windows, Python files must be recognized as a Python programs so environmental variable PATHTEXT must have .PY if not already there.