selfteaching / selfteaching/selfteaching-python-camp
Day09 Try-raise-except和Try-catch-throw之间的对比
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- Dominant language
- Python
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Description
刚刚看同学们的issues，我突然想进一步去了解一下异常处理这个东西。以前学其它语言的时候异常处理是Try-catch-throw，老师当时提了一句可以把要执行的语句都先放在try里面，当时觉得异常处理不重要就没当回事，也没有敲代码验证一下，所以这一块知识还是比较薄弱的。
对比：
二者都有try，只不过python还有else，如果没有异常可以把代码放到else里，另一个则都在try中；python的raise很多情况下应该都是要与if同时出现，而catch会自动捕获异常，并在代码段里执行语句，这一部分功能有些许像except；到了python中的except，可以写print等语句，尽可能详细地描述异常，而throw则只是抛出异常地功能；python中还有finally，无论异常与否都会执行的一个语句。
因为Try-catch-throw学得确实不太好，语法是刚刚才查的，有什么不对的，还望教练和同学们指出。
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Assessment
- Tech stack
- python
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
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- Needs clarification
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- 10/100