

from __future__ import annotations

from typing import Any






class 	__magic_name__				:






     def __init__(							self		,	_lowercase		,	_lowercase  )->    None:  # noqa: A002
         UpperCamelCase_      =	item
         UpperCamelCase_      =	next






class 	__magic_name__				:






     def __init__(							self  )->    None:
         UpperCamelCase_      =	None
         UpperCamelCase_      =	0






     def   UpperCAmelCase_							(							self		,	_lowercase  )->    None:
         UpperCamelCase_      =	Node(_lowercase		,	self.head  )
         self.size += 1






     def   UpperCAmelCase_							(							self  )->    Any:
         # Switched 'self.is_empty()' to 'self.head is None'
         # because mypy was considering the possibility that 'self.head'
         # can be None in below else part and giving error
         if self.head is None:
             return None
         else:
             UpperCamelCase_      =	self.head.item
             UpperCamelCase_      =	self.head.next
             self.size -= 1
             return item






     def   UpperCAmelCase_							(							self  )->    bool:
         return self.head is None






     def __str__(							self  )->    str:
         if self.is_empty():
             return ""
         else:
             UpperCamelCase_      =	self.head
             UpperCamelCase_      =	""
             UpperCamelCase_      =	[]
             while iterate:
                 item_list.append(str(iterate.item  )  )
                 UpperCamelCase_      =	iterate.next

             UpperCamelCase_      =	" --> ".join(_lowercase  )

             return item_str






     def __len__(							self  )->    int:
         return self.size



def  lowerCAmelCase(			SCREAMING_SNAKE_CASE_ )->	float:



    """simple docstring"""






    return -num if num < 0 else num




def  lowerCAmelCase(			SCREAMING_SNAKE_CASE_ )->	int:



    """simple docstring"""






    if len(SCREAMING_SNAKE_CASE_ ) == 0:
        raise ValueError("abs_min() arg is an empty sequence" )
    UpperCamelCase_      =	x[0]
    for i in x:
        if abs_val(SCREAMING_SNAKE_CASE_ ) < abs_val(SCREAMING_SNAKE_CASE_ ):
            UpperCamelCase_      =	i
    return j




def  lowerCAmelCase(			SCREAMING_SNAKE_CASE_ )->	int:



    """simple docstring"""






    if len(SCREAMING_SNAKE_CASE_ ) == 0:
        raise ValueError("abs_max() arg is an empty sequence" )
    UpperCamelCase_      =	x[0]
    for i in x:
        if abs(SCREAMING_SNAKE_CASE_ ) > abs(SCREAMING_SNAKE_CASE_ ):
            UpperCamelCase_      =	i
    return j




def  lowerCAmelCase(			SCREAMING_SNAKE_CASE_ )->	int:



    """simple docstring"""






    if len(SCREAMING_SNAKE_CASE_ ) == 0:
        raise ValueError("abs_max_sort() arg is an empty sequence" )
    return sorted(SCREAMING_SNAKE_CASE_ ,	key=SCREAMING_SNAKE_CASE_ )[-1]




def  lowerCAmelCase(			)->	Any:



    """simple docstring"""






    assert abs_val(0 ) == 0
    assert abs_val(3_4 ) == 3_4
    assert abs_val(-1_0_0_0_0_0_0_0_0_0_0_0 ) == 1_0_0_0_0_0_0_0_0_0_0_0

    UpperCamelCase_      =	[-3, -1, 2, -1_1]
    assert abs_max(SCREAMING_SNAKE_CASE_ ) == -1_1
    assert abs_max_sort(SCREAMING_SNAKE_CASE_ ) == -1_1
    assert abs_min(SCREAMING_SNAKE_CASE_ ) == -1


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 test_abs_val()
 print(abs_val(-34))  # --> 34
