摘要: 2.1. 键的存在性(The “Are You There?”) 不推荐的: dct.has_key(key) Python的做法: key in dct 2.1. 键的存在性(The “Are You There?”) 不推荐的: dct.has_key(key) dct.has_key(key) 阅读全文
posted @ 2016-06-04 15:34 章小路 阅读(245) 评论(0) 推荐(0)