code: 
  
  
  
  
  
  '''simple docstring'''
  
  import heapq
  
  
  
  
  
  def lowerCamelCase		(  __lowerCamelCase				:					Union[str, Any]      , __lowerCamelCase				:					Dict      , __lowerCamelCase				:					Optional[Any]					)		->Optional[int]:
  				_SCREAMING_SNAKE_CASE             =    [(0, start)]  # cost from start node,end node
  				_SCREAMING_SNAKE_CASE             =    set()
  				while heap:
  								(_SCREAMING_SNAKE_CASE)             =    heapq.heappop(__lowerCamelCase					)
  								if u in visited:
  												continue
  								visited.add(__lowerCamelCase					)
  								if u == end:
  												return cost
  								for v, c in graph[u]:
  												if v in visited:
  																continue
  												_SCREAMING_SNAKE_CASE             =    cost + c
  												heapq.heappush(__lowerCamelCase      , (next_item, v)					)
  				return -1
  
  
  lowercase_			       =				{
      """A""": [["""B""", 2], ["""C""", 5]],
      """B""": [["""A""", 2], ["""D""", 3], ["""E""", 1], ["""F""", 1]],
      """C""": [["""A""", 5], ["""F""", 3]],
      """D""": [["""B""", 3]],
      """E""": [["""B""", 4], ["""F""", 3]],
      """F""": [["""C""", 3], ["""E""", 3]],
  }
  lowercase_			       =				{
      """B""": [["""C""", 1]],
      """C""": [["""D""", 1]],
      """D""": [["""F""", 1]],
      """E""": [["""B""", 1], ["""F""", 3]],
      """F""": [],
  }
  lowercase_			       =				{
      """B""": [["""C""", 1]],
      """C""": [["""D""", 1]],
      """D""": [["""F""", 1]],
      """E""": [["""B""", 1], ["""G""", 2]],
      """F""": [],
      """G""": [["""F""", 1]],
  }
  
  lowercase_			       =				dijkstra(G, """E""", """C""")
  print(short_distance)  # E -- 3 --> F -- 3 --> C == 6
  
  lowercase_			       =				dijkstra(Ga, """E""", """F""")
  print(short_distance)  # E -- 3 --> F == 3
  
  lowercase_			       =				dijkstra(Ga, """E""", """F""")
  print(short_distance)  # E -- 2 --> G -- 1 --> F == 3
  
  if __name__ == "__main__":
  						import doctest
  
  						doctest.testmod()
  
  
  
  
style_context: 
  
  
  
  
  
  '''simple docstring'''
  
  def lowerCamelCase		(  __lowerCamelCase				:					str					)		->str:
      _SCREAMING_SNAKE_CASE             =    word.upper()
      _SCREAMING_SNAKE_CASE             =    0
      _SCREAMING_SNAKE_CASE             =    {}
      _SCREAMING_SNAKE_CASE             =    []
  
      for letter in word:
          if letter not in letter_nums:
              _SCREAMING_SNAKE_CASE             =    str(__lowerCamelCase					)
              next_num += 1
          word_pattern.append(letter_nums[letter]					)
      return ".".join(__lowerCamelCase					)
  
  
  if __name__ == "__main__":
        import pprint
        import time
  
        lowercase_			       =				time.time()
        with open("""dictionary.txt""") as in_file:
              lowercase_			       =				in_file.read().splitlines()
  
        lowercase_			       =				{}
        for word in word_list:
              lowercase_			       =				get_word_pattern(word)
              if pattern in all_patterns:
                    all_patterns[pattern].append(word)
              else:
                    lowercase_			       =				[word]
  
        with open("""word_patterns.txt""", """w""") as out_file:
              out_file.write(pprint.pformat(all_patterns))
  
        lowercase_			       =				round(time.time() - start_time, 2)
        print(f"""Done!  {len(all_patterns):,} word patterns found in {total_time} seconds.""")
        # Done!  9,581 word patterns found in 0.58 seconds.
  
  
  
  