logic-python2sympy 0.1.0

convert a logical expression written in `Python` syntax, into a `Sympy` expression

logic_python2sympy

Sympy has the advantage of using Python syntax in its own expressions, but with some exceptions : logical expressions in Sympy differ a bit from their Python counterparts (a and b is written a & b in Sympy). Thus, this module provides functions that can convert a logical expression written in Python syntax, into a Sympy expression.

Usage

>>> import logic_python2sympy as p2s
>>> code = "((0 < x <= 10) or not y"
>>> print(p2s.convert(code))
Or(And(0 < x, x <= 10), Not(y))
>> print(p2s.get_expression(code))
~y | ((0 < x) & (x <= 10))

convert

convert(expr: str) -> str

Transform a Python logical expression into Sympy syntax.
expr: valid logical expression, i.e. expr must be valid Python syntax, and must be a combintion of the following ast nodes: BoolOp, BinOp, UnaryOp, Compare, Call, Constant, Name
raises: NotImplentedError, when the expression contains operators that are not supported in Sympy

get_expression

get_expression(expr: str) -> Any

Transform a Python logical expression into a Sympy expression.
expr: valid logical expression, i.e. expr must be valid Python syntax, and must be a combintion of the following ast nodes: BoolOp, BinOp, UnaryOp, Compare, Call, Constant, Name raises: NotImplentedError, when the expression contains operators that are not supported in Sympy