python eval

The eval() function in Python is used to evaluate a string as a Python expression. It takes a single argument, which is a string containing the expression to be evaluated. The expression can include variables, operators, and function calls.

For example, consider the following code:

x = 5
y = 10
result = eval('x + y')
print(result)

In this code, the eval() function takes the string 'x + y' as an argument and evaluates it as a Python expression. The expression adds the values of x and y and the result is assigned to the variable result. The output of the code is 15.

However, it is important to use the eval() function with caution, as it can execute arbitrary code and pose a security risk if used improperly. It is generally recommended to use safer alternatives, such as parsing the input string manually or using specific libraries for evaluating expressions.