Simple python script to solve equations and systems of equations
Usage: solver.py [data]
data is a file containing equations and systems of equations (each equation on a new line) separated by at least one blank line. All lowercase characters a..z are treated as variables. If data file is not specified then solver.py reads standard input. In this case it does not print equations themselves before solutions, so this can be used as an interactive mode. * symbol can be omitted, i.e. xyz will be treated as x*y*z or you can simply type something like this: 3(x + 1)(y - 2). However, math functions are recognized by parser and will remain as they are, i.e. you can use abs(x) or sin(x + pi/4).