将列表生成式中[]改成() 之后数据结构是否改变？

答案：是，从列表变为生成器

L = [x*x for x in range(10)]
print(L) #[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]

g = (x*x for x in range(10)) 
print(g) #<generator object <genexpr> at 0x02FA6F90>