





"""simple docstring"""
from __future__ import annotations

from collections.abc import Iterable
from dataclasses import dataclass
from typing import Any






class    _UpperCAmelCase  :
					UpperCamelCase						=				("""_front""", """_back""", """_len""")






					@dataclass
					class    _UpperCAmelCase  :
										UpperCamelCase						=				None
										UpperCamelCase						=				None
										UpperCamelCase						=				None







					class    _UpperCAmelCase  :
										UpperCamelCase						=				("""_cur""",)


										def __init__(   self     :Any	,			__UpperCamelCase     :List[str]						):
																	A						=    cur


										def __iter__(   self     :List[Any]						):
																	return self


										def       lowerCamelCase			(   self     :List[str]						):
																	if self._cur is None:
																								# finished iterating
																								raise StopIteration
																	A						=    self._cur.val
																	A						=    self._cur.next_node

																	return val







					def __init__(   self     :Optional[int]	,			__UpperCamelCase     :Dict = None						):
												A						=    None
												A						=    None
												A						=    0

												if iterable is not None:
																			# append every value to the deque
																			for val in iterable:
																										self.append(snake_case_						)


					def       lowerCamelCase			(   self     :Dict	,			__UpperCamelCase     :List[str]						):
												A						=    self._Node(snake_case_	,			snake_case_	,			snake_case_						)
												if self.is_empty():
																			# front = back
																			A						=    node
																			A						=    1
												else:
																			# connect nodes
																			A						=    node
																			A						=    self._back
																			A						=    node  # assign new back to the new node

																			self._len += 1

																			# make sure there were no errors
																			assert not self.is_empty(), "Error on appending value."


					def       lowerCamelCase			(   self     :Union[str, Any]	,			__UpperCamelCase     :Any						):
												A						=    self._Node(snake_case_	,			snake_case_	,			snake_case_						)
												if self.is_empty():
																			# front = back
																			A						=    node
																			A						=    1
												else:
																			# connect nodes
																			A						=    self._front
																			A						=    node
																			A						=    node  # assign new front to the new node

																			self._len += 1

																			# make sure there were no errors
																			assert not self.is_empty(), "Error on appending value."


					def       lowerCamelCase			(   self     :Tuple	,			__UpperCamelCase     :List[str]						):
												for val in iterable:
																			self.append(snake_case_						)


					def       lowerCamelCase			(   self     :List[Any]	,			__UpperCamelCase     :Dict						):
												for val in iterable:
																			self.appendleft(snake_case_						)


					def       lowerCamelCase			(   self     :str						):
												assert not self.is_empty(), "Deque is empty."

												A						=    self._back
												A						=    self._back.prev_node  # set new back
												# drop the last node - python will deallocate memory automatically
												A						=    None

												self._len -= 1

												return topop.val


					def       lowerCamelCase			(   self     :Optional[Any]						):
												assert not self.is_empty(), "Deque is empty."

												A						=    self._front
												A						=    self._front.next_node  # set new front and drop the first node
												A						=    None

												self._len -= 1

												return topop.val


					def       lowerCamelCase			(   self     :Dict						):
												return self._front is None


					def __len__(   self     :Optional[Any]						):
												return self._len


					def __eq__(   self     :Tuple	,			__UpperCamelCase     :int						):

												if not isinstance(snake_case_	,			snake_case_						):
																			return NotImplemented

												A						=    self._front
												A						=    other._front

												# if the length of the dequeues are not the same, they are not equal
												if len(self						) != len(snake_case_						):
																			return False

												while me is not None and oth is not None:
																			# compare every value
																			if me.val != oth.val:
																										return False
																			A						=    me.next_node
																			A						=    oth.next_node

												return True


					def __iter__(   self     :List[Any]						):
												return Deque._Iterator(self._front						)


					def __repr__(   self     :Any						):
												A						=    []
												A						=    self._front
												while aux is not None:
																			# append the values in a list to display
																			values_list.append(aux.val						)
																			A						=    aux.next_node

												return f"[{', '.join(repr(snake_case_						) for val in values_list						)}]"


if __name__ == "__main__":
		import doctest

		doctest.testmod()



'''simple docstring'''

from __future__ import annotations


def        UpperCAmelCase__   (				_lowerCAmelCase    :			list[int | float])    ->		int | float:



						"""simple docstring"""

						if len(_lowerCAmelCase) == 0:
												raise ValueError("find_max() arg is an empty sequence")
						snake_case :       Any				=    nums[0]
						for x in nums:
												if x > max_num:
																		snake_case :       int				=    x
						return max_num


if __name__ == "__main__":
						import doctest

						doctest.testmod(verbose=True)





