Source: hackerrank.com
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"))
Without eval()
>>> type("len")
Task
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).
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).
#Python3 Solution by VK
N = input()
class C:
@staticmethod
def m(N):
return eval(N)
if __name__ == "__main__":
try:
j = C()
j.m(N)
except IOError as e:
print("I/O error({0}): {1}".format(e.errno, e.strerror))
raise
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