# for i in range(100):
#     print(i*i)

列表推导式：

# l =[i*i for i in range(100)]
# print(l)

# l = [{'name':'v','age':28},{'name':'v'}]
# name_list = [dic['name'] for dic in l]
# print(name_list)

生成器表达式:  写法与列表推导式一样，把[]换成()

# l = [{'name':'v1','age':28},{'name':'v2'}]
# name_list_generator = (dic['name'] for dic in l)
# print(name_list_generator)
# print(next(name_list_generator))
# print(next(name_list_generator))