evaluate

"""
Read this: https://realpython.com/python-eval-function/#minimizing-the-security-issues-of-eval
"""

import math

def evaluate(user_input):
    functions = {
        "sin": math.sin,
        "cos": math.cos,
        "tan": math.tan,
        "pi": math.pi,
        "log": math.log
    }
    globals = {"__builtins__": {}}
    return eval(user_input, globals, functions)


evaluate("sin(pi * 2)")