生成器表達式實質迭代加列表解析，用（）包圍表示。

rndg=(x for x in range(50))for i in rndg:print(i,end=",")```bash 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49, rndg=(x for x in range(50))for i in range(10):print(next(rndg),end=",") 0,1,2,3,4,5,6,7,8,9,

迭代器運行完畢后，迭代用盡，需要重新產生新的迭代，生成表達式和生成器函數(shù)都一樣

import random def getRandom():for i in range(5):yield random.randint(1,100)rndg=getRandom() for j in range(10):print(next(rndg),end=";")

下面語句會報錯

File "G:/learn/2.py", line 14, in <module>print(next(rndg),end=";")StopIteration import random def getRandom():for i in range(5):yield random.randint(1,100)rndg=getRandom() for j in range(10):if j==5:rndg=getRandom()print(next(rndg),end=";") 49;54;3;49;26;14;19;46;18;28;

總結

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