Simple thread safe process timer

took.py

from threading import Lock
import time


class Took:
  def __init__ ( self ):
    self.__lock = Lock()
    with self.__lock:
      self.__start = time.time()
      self.__total = time.time()

  def re_init ( self ):
    with self.__lock:
      self.__start = time.time()
      self.__total = time.time()

  def single ( self ) -> float:
    with self.__lock:
      diff = time.time() - self.__start
      self.__start = time.time()
    return diff

  def total ( self ) -> float:
    with self.__lock:
      diff = time.time() - self.__total
    return diff