Python thread safe counter

counter.py

from threading import Lock


class Counter( object ):
  def __init__ ( self ):
    self.__value = 0
    self.__lock = Lock()

  def increment ( self, by_value: int = 1 ):
    with self.__lock:
      self.__value += by_value

  def decrement ( self, by_value: int = 1, no_minus: bool = True ):
    with self.__lock:
      self.__value -= by_value
      if no_minus and self.__value < 0:
        self.__value = 0

  def set ( self, value: int ):
    with self.__lock:
      self.__value = value

  def get ( self ) -> int:
    with self.__lock:
      return self.__value

  @property
  def value ( self ) -> int:
    with self.__lock:
      return self.__value