def testcase4(self):
s = "n/a"
self.assertEqual(0, s2f(s))
pass
def testcase1(self):
s = "1.2M"
self.assertEqual(1200000, s2f(s))
pass
def testcase3(self):
s = "$1.2B"
self.assertEqual(1200000000, s2f(s))
pass
