This parser can handle addition, subtraction, division, multiplication, parentheses, floating point numbers and negation.
It builds its own AST and does not rely on using eval for computations, making it completely safe for use in production.
>>> from parser import compute_arithmetic as compute
>>>
>>> compute("-24")
-24
>>> compute("1+20+3.1415")
24.1415
>>> compute("-1-1-(-5*---1*-92/93--2-2-(25/--25))+25+24.24+143-0--1*(0+1-1/1*1)")
196.1862365591398
>>> compute("1/0")
nan