Python3 generator and python3 Generator

Python3 generator and python3 Generator

1 ''' 2 list generation type 3''' 4 5 # a1 = [x for x in range (10)] 6 # a2 = [x * 2 for x in range (10)] 7 # print (a1) 8 # print (a2) 9 #10 # def fun1 (x ): 11 # return x ** 3 12 # a3 = [fun1 (x) for x in range (10)] 13 # print (a3) 14 #15 # list generation type 16 # Value Method 17 # B = ['asd ', 8, 9, 10] 18 # w, x, y, z = B 19 # print (w, x, y, z) 20 # print (B) 21 #22 #23 # generator 24 # c = (x * 2 for x in range (10) # c is the generator object 25 # print (c) # <generator object <genexpr> at 0x00000286BEF21CA8> 26 # print (next (c) # equivalent to c. _ next _ (), medium price in Python2 to c. next () 27 # print (next (c) 28 # print (next (c) 29 # print (next (c )) #30 #31 # the generator is an iteratable object 32 # import time 33 # for I in c: # for a next () function 34 # print (I) 35 ## time. sleep (1) 36 37 ''' 38 generator two creation Methods 39 1. (x * 2 for x in range (10) 40 2. yield 41 ''' 42 43 # def fun2 (): 44 # print ('###') # This print is not shown 45 # yield 1 46 # print (fun2 ()) # fun2 () is the generator object 47 #48 # def fun3 (): 49 # print ('###') 50 # yield 1 51 #52 # print ('asd ') 53 # yield 2 54 #55 # return None 56 #57 # c1 = fun3 () 58 # next (c1) # next () is returned 1 59 # next (c1) # next () is returned 2 60 #61 # for I in fun3 (): 62 # print (I) # '###', 1, 'asd ', 2 63 # At this time, 1 and 2 are the above returned values 64 65 66 ''' 67 what is an Iterated object, the iteratable object has the iter method 68 ''' 69 70 # list1 = [, 3] 71 # list1. _ iter _ () 72 #73 # tup1 =, 3) 74 # tup1. _ iter _ () 75 #76 # disc1 = {'asd ': 123} 77 # disc1. _ iter __() 78 79 80 81 # Fibonacci sequence 82 #0 1 1 1 2 3 5 8 13 21 34 83 # def fun4 (max): 84 # q, before, after = 0, 0, 1 85 # while q <max: 86 # print (after) 87 # before, after = after, before + after 88 # q + = 1 89 # fun4 (10) 90 # print (fun4 (8) 91 92 # Use the generator to create the Fibonacci series 93 # def fun5 (max): 94 # q, before, after =, 1 95 # while q <max: 96 #97 # yield before 98 # before, after = after, before + after 99# q = q + 1100 # z = fun5 (8) 101 # print (z) 102 # print (next (z) 103 # print (next (z) 104 # print (next (z )) 105 # print (next (z) 106 # print (next (z) 107 108 109 ''' 110 send method 111 ''' 112 # def fun5 (): 113 # print ('a1') 114 # a = yield 1115 # print (a) 116 #117 # yield 2118 # x = fun5 () 119 # x1 = x. send (None) # equivalent to next (x) 120 # No next before the first send, only one send (None) 121 # h = x. send ('aaaaaaaaaaa') 122 # print (h) 123 124 ''' 125 send is more than next. You can input a parameter to the variable 126 '''