eval () in python and its syntax :

input() takes the user input, but when the user enters an integer as an input the input function returns a string, but in the case of eval it will evaluate the returned value from a string to an integer.

input = input("Enter any number of your choice:")
print(input)
print(type(input))
Output: Enter any number of your choice: 10 + 10 
10 + 10 
<class 'str'>

eval = eval(input("Enter any number of your choice"))
print(eval)
print(type(eval))
Enter any number of your choice: 10 + 10 
20 
<class 'int'>