problem using pyeval_expression

[snippsat]

I used cmd for the command: pip install py-expression-eval
and then I changed the code to:

Then you most follow the Doc py-expression-eval.

>>> from py_expression_eval import Parser
>>> 
>>> parser = Parser()
>>> p = parser.parse('53 * (-4) +2 * 3')
>>> p.evaluate({})
-206

Or Simpleeval.

>>> from simpleeval import simple_eval
>>> 
>>> simple_eval(" 53 * -4 +2 * 3 ")
-206