Python异常处理终极指南
原文英文,约4500词,阅读约需17分钟。发表于: 。I often come across developers who know the mechanics of Python error handling well, yet when I review their code I find it to be far from good. Exceptions in Python is one of those areas that...
Python异常处理有两种模式:LBYL(先检查后执行)和EAFP(先执行后处理)。LBYL需要预先检查所有错误条件,代码复杂且不可靠。EAFP通过异常处理更简洁,但需明确捕获异常类型。错误分为新错误和冒泡错误,以及可恢复和不可恢复错误。不可恢复的冒泡错误应继续冒泡至更高层处理。高层异常捕获可防止应用崩溃,并灵活处理错误。