convert a logical expression written in `Python` syntax, into a `Sympy` expression
Project description
logic_python2sympy
PyPI: | https://pypi.org/project/logic-python2sympy/ |
Source: | https://github.com/duntytelessia/logic_python2sympy/ |
License: | MIT |
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
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