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#! /usr/bin/python3
import unittest
import struct
def ri(s):
a=str(s)[::-1]
if (a[-1] == '-'):
a='-' + a[0:-1]
a=int(a)
try:
b=struct.pack('<l',a)
except struct.error as err:
return 0
return a
class TestRi(unittest.TestCase):
def test_ex1(self):
self.assertEqual(ri(1234),4321,'example 1')
def test_ex2(self):
self.assertEqual(ri(-1234),-4321,'example 2')
def test_ex3(self):
self.assertEqual(ri(1231230512),0,'example 3')
unittest.main()
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