HackerRank Python Evaluation problem solution

HackerRank Python Evaluation problem solution – In this Python evaluation problem, you are given an expression in a line. Read that line as a string variable, such as var, and print the result using eval(var).

The eval() Expression is a very powerful built-in function of Python. It helps in evaluating an expression. The expression can be a Python statement or a code object.

For example:

>>> eval("9 + 5")
14
>>> x = 2
>>> eval("x + 3")
5

Here, eval() can also be used to work with Python keywords or defined functions and variables. These would normally be stored as strings.

For example:

>>> type(eval("len"))
<type 'builtin_function_or_method'>

Without eval()

>>> type("len")
<type 'str'>

HackerRank Python Evaluation problem solution in Python 2.

# Enter your code here. Read input from STDIN. Print output to STDOUT
from __future__ import print_function

s=raw_input()
eval(s)

Python Evaluation solution in Python 3.

var = input()
eval(var)

Problem solution in pypy programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
from __future__ import print_function

input()
# or:
# eval(raw_input())

Problem solution in pypy3 programming.

var=input()
eval(var)