## 

###  ( : ; : /)

+  : 

+ **** : 

+ **** : 

+  : 

+ python 

    +  cpu 
    
    + 

### 

+ **** : 

+ **** : ,

+  : 


###  ( :   1 : N)

+ ****
    + ************
    + 
    + 
    + 
    + 
    + ****
    
+ **** 
    + ******************
    +  
    + 
    +  I/O 
    
+ ****
    + ,
    + 
    + ,
    + 
    + . . 
    + . .

### 

+  threading  `import threading`

    ```python
  import threading
  
  # threading.Thread(target=)
  threading.Thread(self, group=None, target=, name=,
                 args=(), kwargs=None, *, daemon=None)
  ```


    1.  ( args=() )    `threading.Thread(target=, args=())`
    
    2. **join()**  : ,
    
    3. **setDaemon()**  :  () `.setDaemon(True)`
        + 
        + eg: QQ 
        
    4. 
        + **getName()** : 
        + **setName()** : 
        + **is_alive()** :   ( isAlive() )
        
    5. threading 
        + **threading.currentThread()  threading.current_thread()** : 
        + **threading.enumerate()** :   list (: , )
        + **threading.activeCount()**  threading.active_count() : ,  len(threading.enumerate()) 
  
+  (  threading.Thread  run() )
    
  ```python
  import threading
  import time
  
  class MyThread(threading.Thread):
  
      def __init__(self, num):
          super(MyThread, self).__init__()
          self.num = num
  
      def run(self):
          for i in range(self.num):
              print(f"---run\t{i}---")
  
  if __name__ == "__main__":
      my_thread = MyThread(3)
      my_thread.run()
  ```


+ 
    
    +  "" 
    
+