Python eval() Function
Definition and Usage
The eval() function evaluates the specified 
expression, if the expression is a legal Python statement, it will be executed.
Syntax
  
    eval(expression, globals, locals)
  
Parameter Values
| Parameter | Description | 
|---|---|
| expression | A String, that will be evaluated as Python code | 
| globals | Optional. A dictionary containing global parameters | 
| locals | Optional. A dictionary containing local parameters | 

