摘要: #!/usr/bin/python # 导入math包 import math def quadratic(a, b, c): if not isinstance(a, (int, float))and isinstance(a, (int, float)) and isinstance(a, (i 阅读全文
posted @ 2019-07-29 17:33 青山子 阅读(1744) 评论(0) 推荐(0)