多进程
    多线程

    1. from threading import Thread
    2. from time import sleep
    5. class CookBook(Thread):
    6.     def __init__(self):
    7.         self.message = "Hello parallel Python"
    8.         return super().__init__()
    10.     def print_message(self):
    11.         print(self.message, self.name, self.ident)
    13.     def run(self):
    14.         print("Thread Starting\n")
    15.         x = 0
    16.         while (x <10):
    17.             self.print_message()
    18.             # sleep(2)
    19.             sleep(2)
    20.             x += 1
    21.         print("Thread Ended\n")
    23. if __name__ == "__main__":
    24.     print("Process Started")
    25.     hello_Python = CookBook()
    26.     hello_Python.start()
    27.     print("Process Ended")
    31.  """
    32.  output:
    33.  (pythonparallel-jU7W1wcf) D:\projects\pythoncode\pythonparallel>python hellopythonwiththreads.py
    34. Process Started
    35. Thread Starting
    36. Process Ended
    38. Hello parallel Python Thread-1 11196
    39. Hello parallel Python Thread-1 11196
    40. Hello parallel Python Thread-1 11196
    41. Hello parallel Python Thread-1 11196
    42. Hello parallel Python Thread-1 11196
    43. Hello parallel Python Thread-1 11196
    44. Hello parallel Python Thread-1 11196
    45. Hello parallel Python Thread-1 11196
    46. Hello parallel Python Thread-1 11196
    47. Hello parallel Python Thread-1 11196
    48. Thread Ended
    51.  """

    注意：永远不要留下任何线程在后台默默运行。