What is exec () in Python?
exec() function is used for the dynamic execution of Python program which can either be a string or object code. If it is a string, the string is parsed as a suite of Python statements which is then executed unless a syntax error occurs and if it is an object code, it is simply executed.
What does the eval function do in Python?
Answer: eval is a built-in- function used in python, eval function parses the expression argument and evaluates it as a python expression. In simple words, the eval function evaluates the “String” like a python expression and returns the result as an integer.
What is the difference between eval and execute in QTP?
In terms of why you would use one rather than the other, the main difference is that the Eval function will always return the result of the string evaluation. The Execute statement, on the other hand, will execute your passed-in string statement for execution but will not retrieve the result of that execution.
How do you do exec in Python?
Exec function can dynamically execute code of python programs. The code can be passed in as string or object code to this function. The object code is executed as is while the string is first parsed and checked for any syntax error. If no syntax error, then the parsed string is executed as a python statement.
Should we use exec in Python?
When you need exec and eval, yeah, you really do need them. But, the majority of the in-the-wild usage of these functions (and the similar constructs in other scripting languages) is totally inappropriate and could be replaced with other simpler constructs that are faster, more secure and have fewer bugs.
What is exec () and eval ()?
Basically, eval is used to evaluate a single dynamically generated Python expression, and exec is used to execute dynamically generated Python code only for its side effects.