code: def solve():
      """
      The nth term of the sequence of triangle numbers is given by, t_n = 1/2 x n(n+1); so the first ten triangle numbers are:
  
      1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ...
  
      By converting each letter in a word to a number corresponding to its alphabetical position and adding these values we form a word value. For example, the word value for SKY is 19 + 11 + 25 = 55 = t_10. If the word value is a triangle number then we shall call the word a triangle word.
  
      Using words.txt (right click and 'Save Link/Target As...'), a 16K text file containing nearly two-thousand common English words, how many are triangle words?
  
      """
  
      def worth(word):
          return sum(ord(letter) - ord("A") + 1 for letter in word)
  
      words = (
          open("pythran/tests/euler/words42.txt")
          .read()
          .replace('"', "")
          .split(",")
      )
      triangle_numbers = dict.fromkeys(
          list(n * (n + 1) / 2 for n in range(1, 100)), 1
      )
  
      return sum(1 for word in words if worth(word) in triangle_numbers)
  
label_desc: Use image node_id 1 for calling a global function with example usage: solve() and returns: sum, sum