# Day_09

## 

+ **** : ()
    
    + :
        + 
        + 
        + 
    + 
    + : 
    +  : 
    + : 
        +  -->  
        +   -->  
    
+ ****
    
    + : 
        ```
      def (fn):
        def wrapper(*args, **kwargs):
            
            res = fn(*args, **kwargs)
            
        return res
      return wrapper
      ```
      
    +  : 
        + 
        
        + 
            ```python
        def wrap(fn):
               def inner(name, age):
                   print(f"{age}")
                   age -= 2
                   fn(name, age)
               return inner
           
           @wrap      
           def func(name, age):
           	print(f"name: {name}, age: {age}")
           
           func("", 21)
           ```


        + 
        + 
        
        + 
## 
+ 
    + 
    + 
    + 

+ 
    +  : 
    
+ 
    + : `import `
        + 
            1.  sys.path 
            2.  PythonPATH  []
            3. 
        +  []
            +  : `import `
        + 
            +  : `import  as `
        +  []
            +  : `from  import /`
    
    +  ()
        + 
            + **. :** : 
            + **.. :** : 
        + 
            +  []
                + : `from . import `
                +  : `from . import  as `
                +  [] : `from . import /`
                
##  
+  (Package) :  Python 
    +  :  \_\_init__.py  (,)                
    
    + 
        +  []
            +  : `from  import `
        +  []
            +  : `from  import  as `
        +  []  \_\_init__.py 
            +  : `from . import `
        + 
            +  : `from  import *`
    + 
        + 
            + `from . import `
        +  |
            + `from . import `
    + \_\_name\_\_ () : 
        `if __name__ == "main": `
## 

+ **random ** ()
    
    + 
    
        + `random()` :  0-1  
        + `uniform(a, b)` : 
        
    + 
        + `randint(a, b)` : 
          
        + `randrange(start, stop, [step])` : start, stop  (step) 
          
        + 
            + `random.choice(lst)` : 
                
              ```python
              # from random import choice
              import random
              lst = [1,2,3,4,5]
              random.choice(lst)
              # choice(lst)
          ```
            
    
    + 
        
        + `random.shuffle()` :