Question: 
Write a function to print check if the triangle is scalene or not.


Model's Code:
def check_isosceles(a, b, c):
    return a != b and b != c and a != c



Sample Correct Code:
def check_isosceles(x,y,z):
  if x!=y & y!=z & z!=x:
	   return True
  else:
     return False


Asserts:
assert check_isosceles(6,8,12)==True
assert check_isosceles(6,6,12)==False
assert check_isosceles(6,15,20)==True


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 521 of 974: 384/521 (73.70441458733205%): success