class ext_int(int):
	def __new__(cls, *args, **kwargs):
		return int.__new__(cls, *args, **kwargs)

	def is_prime(self):
		if(abs(self) in (1, 0)):
			return False
		for i in range(2, abs(self)//2 + 1):
			if(not self % i):
				return False
		return True

	def is_positive(self):
		return self > 0
	def is_even(self):
		return not self % 2
	def is_odd(self):
		return not self.is_even()
	def get_inverse(self):
		return 1 / self

class shitty_list(list):
	def __new__(cls, *args, **kwargs):
		return list.__new__(cls, *args, **kwargs)

	def divide(self):
		return (self[:len(self)//2], self[len(self)//2:])


if( __name__ == "__main__"):
	print(ext_int(3).is_prime())
	print(ext_int(4).is_prime())
	print(ext_int(2).is_positive())
	print(ext_int(-2).is_positive())
	print(ext_int(2).is_even())
	print(ext_int(3).is_even())
	print(ext_int(2).is_odd())
	print(ext_int(3).is_odd())
	print(ext_int(2).get_inverse())

	print()
	print(shitty_list("abcdefg").divide())