Import Time Time form, localtime, SLEEP 
# timestamp, from 1 January 1970 0.0 seconds to now experienced the number of seconds 
print (localitime (time ()) )

# Example: Create a parent class and subclass, the parent calculates two numbers recorded as the SUM, subclass print this the SUM 

DEF Joker (FUNC): 
    DEF Warp (num1, num2): 
        Print ( ' num1 + num2 = ' , + num1 num2)
         return FUNC (num1, num2)
     return Warp 
@joker 
DEF SUM (num1, num2): 
    Print (num1, num2) 
    Pass 
SUM ( 12 is , 14 )

Results: num1 num2 = + 26 is 
　　　12 is 14

# Example: listing formula 
A = (X for X in Range ( 100 ) IF X% 2 == 0 )
 for I in Range ( 10 ): 
    Print (Next (A)) 
# Formula 
# A = [X for X in Range ( 1000 ) IF X% 2 == 0 ] 
# advantages: fast calculation, because the disposable loading into memory, the amount of data is not suitable for the case of too large 10000 - 2000 - 
# disadvantages: memory for 
# generator 
#a = (the X- for the X- inRange ( 1000 ) IF X% 2 == 0 ) 
# advantages: saving memory space 
# drawbacks: slow calculation due to the generation

result:

0 
2 
. 4 
. 6 
. 8 
10 
12 is 
14 
16 
18 is 

decorator

#例：
def deco(func):
    def warp(H):
        print('joker')
        return func(H)
    return warp
@deco
def joker(name):
    print('hello %s'%name)
joker('hena')

result:

joker
hello hena

Wang python03

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