def 		snake_case__  (		lowercase				):
   lowerCAmelCase_:       str         =  []
   lowerCAmelCase_:       List[str]         =  1

   for i in range(len(lowercase				)				):
      if i + 1 < len(lowercase				) and text[i] == text[i + 1]:
         count += 1
      else:
         encoded.append((text[i], count)				)
         lowerCAmelCase_:       List[Any]         =  1

   return encoded
def 		snake_case__  (		lowercase				):
   return "".join(char * length for char, length in encoded				)


if __name__ == "__main__":
     from doctest import testmod

     testmod(name="""run_length_encode""", verbose=True)
     testmod(name="""run_length_decode""", verbose=True)
from .balanced_parentheses import balanced_parentheses
from .stack import Stack
def 		snake_case__  (		lowercase				):
   return {"+": 1, "-": 1, "*": 2, "/": 2, "^": 3}.get(lowercase       ,							-1				)
def 		snake_case__  (		lowercase				):
   if not balanced_parentheses(lowercase				):
      raise ValueError("Mismatched parentheses"				)
   lowerCAmelCase_:       Stack[str]         =  Stack()
   lowerCAmelCase_:       Union[str, Any]         =  []
   for char in expression_str:
      if char.isalpha() or char.isdigit():
         postfix.append(lowercase				)
      elif char == "(":
         stack.push(lowercase				)
      elif char == ")":
         while not stack.is_empty() and stack.peek() != "(":
            postfix.append(stack.pop()				)
         stack.pop()
      else:
         while not stack.is_empty() and precedence(lowercase				) <= precedence(stack.peek()				):
            postfix.append(stack.pop()				)
         stack.push(lowercase				)
   while not stack.is_empty():
      postfix.append(stack.pop()				)
   return " ".join(lowercase				)


if __name__ == "__main__":
 from doctest import testmod

 testmod()
 a     :			int					    =						"""a+b*(c^d-e)^(f+g*h)-i"""

 print("""Infix to Postfix Notation demonstration:\n""")
 print("""Infix notation: """ + expression)
 print("""Postfix notation: """ + infix_to_postfix(expression))