
'''simple docstring'''
from collections import namedtuple

A__ :		Any					=namedtuple('from_to', 'from_ to')

A__ :		str					={
    'millimeter': 'mm',
    'centimeter': 'cm',
    'meter': 'm',
    'kilometer': 'km',
    'inch': 'in',
    'inche': 'in',  # Trailing 's' has been stripped off
    'feet': 'ft',
    'foot': 'ft',
    'yard': 'yd',
    'mile': 'mi',
}

A__ :		Optional[Any]					={
    'mm': from_to(0.0_0_1, 1_000),
    'cm': from_to(0.0_1, 100),
    'm': from_to(1, 1),
    'km': from_to(1_000, 0.0_0_1),
    'in': from_to(0.0_2_5_4, 3_9.3_7_0_1),
    'ft': from_to(0.3_0_4_8, 3.2_8_0_8_4),
    'yd': from_to(0.9_1_4_4, 1.0_9_3_6_1),
    'mi': from_to(1_6_0_9.3_4, 0.0_0_0_6_2_1_3_7_1),
}







def 							A_  (    __SCREAMING_SNAKE_CASE    :	float      ,  __SCREAMING_SNAKE_CASE    :	str      ,  __SCREAMING_SNAKE_CASE    :	str			)					->							float:





  """simple docstring"""

  __A		:  int       				=		from_type.lower().rstrip("""s"""			)
  __A		:  int       				=		TYPE_CONVERSION.get(__SCREAMING_SNAKE_CASE      ,  __SCREAMING_SNAKE_CASE			)
  __A		:  int       				=		to_type.lower().rstrip("""s"""			)
  __A		:  Optional[Any]       				=		TYPE_CONVERSION.get(__SCREAMING_SNAKE_CASE      ,  __SCREAMING_SNAKE_CASE			)
  if new_from not in METRIC_CONVERSION:
    __A		:  Tuple       				=		(
        F"Invalid 'from_type' value: {from_type!r}.\n"
        F"Conversion abbreviations are: {', '.join(__SCREAMING_SNAKE_CASE			)}"
    )
    raise ValueError(__SCREAMING_SNAKE_CASE			)
  if new_to not in METRIC_CONVERSION:
    __A		:  Any       				=		(
        F"Invalid 'to_type' value: {to_type!r}.\n"
        F"Conversion abbreviations are: {', '.join(__SCREAMING_SNAKE_CASE			)}"
    )
    raise ValueError(__SCREAMING_SNAKE_CASE			)
  return value * METRIC_CONVERSION[new_from].from_ * METRIC_CONVERSION[new_to].to


if __name__ == "__main__":
     import doctest

     doctest.testmod()





'''simple docstring'''
import heapq







def 							A_  (    __SCREAMING_SNAKE_CASE    :	List[str]      ,  __SCREAMING_SNAKE_CASE    :	List[Any]      ,  __SCREAMING_SNAKE_CASE    :	str			)					->							Any:





  """simple docstring"""

  __A		:  Dict       				=		[(0, start)]  # cost from start node,end node
  __A		:  Union[str, Any]       				=		set()
  while heap:
    ((__A)				,       (__A))		:  int       				=		heapq.heappop(__SCREAMING_SNAKE_CASE			)
    if u in visited:
      continue
    visited.add(__SCREAMING_SNAKE_CASE			)
    if u == end:
      return cost
    for v, c in graph[u]:
      if v in visited:
        continue
      __A		:  List[str]       				=		cost + c
      heapq.heappush(__SCREAMING_SNAKE_CASE      ,  (next_item, v)			)
  return -1


A__ :		Any					={
    '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]],
}
A__ :		List[str]					={
    'B': [['C', 1]],
    'C': [['D', 1]],
    'D': [['F', 1]],
    'E': [['B', 1], ['F', 3]],
    'F': [],
}
A__ :		List[Any]					={
    'B': [['C', 1]],
    'C': [['D', 1]],
    'D': [['F', 1]],
    'E': [['B', 1], ['G', 2]],
    'F': [],
    'G': [['F', 1]],
}

A__ :		List[str]					=dijkstra(G, 'E', 'C')
print(short_distance)  # E -- 3 --> F -- 3 --> C == 6

A__ :		Optional[Any]					=dijkstra(Ga, 'E', 'F')
print(short_distance)  # E -- 3 --> F == 3

A__ :		Any					=dijkstra(Ga, 'E', 'F')
print(short_distance)  # E -- 2 --> G -- 1 --> F == 3

if __name__ == "__main__":
     import doctest

     doctest.testmod()



