Eval() method in Python Built in Function

Eval method in built in function evaluates the python code which is run in the program and then executes an expression.

Syntax:

eval(expression[, globals[, locals]])

Parameter

Eval has three parameters.

1. Expression:the parsed or the resolved string is entered and evaluated as a python expression.
2. Locals:this parameter is used a mapping object. Dictionary is an commonly used mapping object.
3. Globals: It a dictionary.

Example-1:

x = 'print(9+8)'
eval(x)

Output:

Example-2:

x = 'print(8-9)'
eval(x)

Output:

Example-3:

x = 'print(17-5)'
eval(x)

Output:

Example-4:

x = 'print(1569*7854)'
eval(x)

Output:

Example-5

x = 8
print(eval('x + 1'))

Output: