Python 生成器(generator)

mylist=[x  for x  in range(100000000)]      #列表(一次性生成，占用内存)mygenerator=(x  for x  in range(100000000)) #生成器,[]返回list,（）返回生成器print(type(mygenerator))  #class 'generator' 生成器类型(用一个，生成一个，节约内存)print(next(mygenerator))print(next(mygenerator))print(next(mygenerator))print(next(mygenerator))print(next(mygenerator))print(next(mygenerator))print(next(mygenerator))for  it  in  mylist:  #循环    print(it)