code: 
  """simple docstring"""
  
  
  
  
  
  from .balanced_parentheses import balanced_parentheses
  from .stack import Stack
  
  
  
  
  
  
  
  def 			lowercase__  (	__lowerCamelCase						):
     return {"+": 1, "-": 1, "*": 2, "/": 2, "^": 3}.get(__lowerCamelCase,	-1						)
  
  
  
  
  
  
  
  def 			lowercase__  (	__lowerCamelCase						):
     if not balanced_parentheses(__lowerCamelCase						):
        raise ValueError("Mismatched parentheses"						)
     UpperCAmelCase_      :      List[Any]      =					Stack()
     UpperCAmelCase_      :      Optional[int]      =					[]
     for char in expression_str:
        if char.isalpha() or char.isdigit():
           postfix.append(__lowerCamelCase						)
        elif char == "(":
           stack.push(__lowerCamelCase						)
        elif char == ")":
           while not stack.is_empty() and stack.peek() != "(":
              postfix.append(stack.pop()						)
           stack.pop()
        else:
           while not stack.is_empty() and precedence(__lowerCamelCase						) <= precedence(stack.peek()						):
              postfix.append(stack.pop()						)
           stack.push(__lowerCamelCase						)
     while not stack.is_empty():
        postfix.append(stack.pop()						)
     return " ".join(__lowerCamelCase						)
  
  
  if __name__ == "__main__":
      from doctest import testmod
  
      testmod()
      _a	 =							"""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))
  
  
  
style_context: 
  """simple docstring"""
  
  
  
  
  
  from string import ascii_uppercase
  
  
  
  
  
  
  
  def 			__a  (	__lowerCamelCase,	__lowerCamelCase,	__lowerCamelCase = False,	__lowerCamelCase = ascii_uppercase						):
     UpperCAmelCase_      :      List[str]      =					keyword.upper()
     UpperCAmelCase_      :      str      =					plaintext.upper()
     UpperCAmelCase_      :      Tuple      =					set(__lowerCamelCase						)
  
     # create a list of unique characters in the keyword - their order matters
     # it determines how we will map plaintext characters to the ciphertext
     UpperCAmelCase_      :      Tuple      =					[]
     for char in keyword:
        if char in alphabet_set and char not in unique_chars:
           unique_chars.append(__lowerCamelCase						)
      # the number of those unique characters will determine the number of rows
     UpperCAmelCase_      :      Union[str, Any]      =					len(__lowerCamelCase						)
  
     # create a shifted version of the alphabet
     UpperCAmelCase_      :      Tuple      =					unique_chars + [
         char for char in alphabet if char not in unique_chars
     ]
  
     # create a modified alphabet by splitting the shifted alphabet into rows
     UpperCAmelCase_      :      List[str]      =					[
         shifted_alphabet[k : k + num_unique_chars_in_keyword]
         for k in range(0,	26,	__lowerCamelCase						)
     ]
  
     # map the alphabet characters to the modified alphabet characters
     # going 'vertically' through the modified alphabet - consider columns first
     UpperCAmelCase_      :      Tuple      =					{}
     UpperCAmelCase_      :      Dict      =					0
     for column in range(__lowerCamelCase						):
        for row in modified_alphabet:
           # if current row (the last one) is too short, break out of loop
           if len(__lowerCamelCase						) <= column:
              break
  
           # map current letter to letter in modified alphabet
           UpperCAmelCase_      :      Tuple      =					row[column]
           letter_index += 1
  
     if verbose:
        print(__lowerCamelCase						)
     # create the encrypted text by mapping the plaintext to the modified alphabet
     return "".join(mapping[char] if char in mapping else char for char in plaintext						)
  
  
  if __name__ == "__main__":
      # example use
      print(mixed_keyword('college', 'UNIVERSITY'))
  
  
  