input: Write a function to check if a list of strings contains any palindromes.
  assert is_palindrome(['radar', 'hello', 'level']) == True
  assert is_palindrome(['apple', 'banana', 'carrot']) == False
  assert is_palindrome(['madam', 'racecar', 'world']) == True
output: def is_palindrome(strings):
      for s in strings:
          if s == s[::-1]:
              return True
      return False