Expression Solver

A small, self contained lexer and expression parser written in Python. Compatible with Python3 and 2. No pip requirements.

Example: main.py

from solver import Parser

def main():
    expr = "2 + sin(1/2) * 44.0"
    print("\"{}\"".format(expr))
    parser = Parser(expr)
    tokens = parser.parse()
    for t in tokens:
        print(t.token)

if __name__ == "__main__":
    main()

~# python ./main.py
"2 + sin(1/2) * 44.0"
Variable.Constant
Operator.Add
Function.Sin
Operator.LeftParen
Variable.Constant
Operator.Divide
Variable.Constant
Operator.RightParen
Operator.Multiply
Variable.Constant

Note that this is an expression parser and not a solver.

This is an upload of some old code from 2016. This code was used in my project LittleMan.