python学习笔记之生成器

#生成器函数
# def generator():
#     print(1)
#     return \'a\'
#
# ret = generator()
# print(ret)

#只要含有yield关键字的函数都是生成器函数
# yield不能和return共用且需要写在函数内
# def generator():
#     print(1)
#     yield \'a\'
# #生成器函数 ： 执行之后会得到一个生成器作为返回值
# ret = generator()
# print(ret)
# print(ret.__next__())

# def generator():
#     print(1)
#     yield \'a\'
#     print(2)
#     yield \'b\'
#     yield \'c\'
# g = generator()
# for i in g:
#     print(i)
# ret = g.__next__()
# print(ret)
# ret = g.__next__()
# print(ret)
# ret = g.__next__()
# print(ret)