try except finally

Reprinted from Https://www.cnblogs.com/JohnABC/p/4065437.htmlLearning Python or other programming languages with abnormal control , it is very possible to say that the execution of try except finally (try Catch finally) is very simple, nothing but

As in other languages, in Python, thetry/except statement is primarily used to handle some exceptions that occur during normal execution of a program , such as syntax errors (Python is not compiled as a scripting language, and syntax is detected

The use of try...except...finally in PythonAuthor:headsen Chendate:2018-04-09 16:22:11Try, except, finally is the exception-catching mechanism in python, and the usual usage is try: Except ... In combination, the program captures the exception in

Python try except else finally instanceclassAerror (Exception):"""Aerror---exception""" Print('Aerror')classBerror (Exception):"""Berror---exception""" Print('Berror')Try: #Raise Aerror #Raise BerrorAAAAA ()exceptAerror:Print("Get Aerror"

Learned about Python's error handling today.In the process of program processing, there are often errors, once the error is very troublesome. So some high-level languages are usually built into a set of try...exept...finaly ... Error-handling

Illustrate the use of try/except/finally.If you do not use try/except/finally1 ' ABC ' 2 def fetcher (obj, index): 3 return Obj[index] 4 5 fetcher (x, 4)Output: " test.py " in 4) "test.py" in fetcher return obj[index]indexerror:string

[code block] x = ' abc ' def fetcher (obj, index): return Obj[index] Fetcher (x, 4) Output: File "test.py", line 6, Fetcher (x, 4) File "test.py", line 4, in Fetcher return Obj[index]

try//attempt to execute{Somecode}except//execution When an error occurs, except has a specific type of error{Somecode}Endtry//attempt to execute{Somecode}finally//is enforced anyway.{Somecode}EndCases:TryAge:=strtoint (Edit1.text);ShowMessage

try//attempt to execute{Somecode}except//execution When an error occurs, except has a specific type of error{Somecode}Endtry//attempt to execute{Somecode}finally//is enforced anyway.{Somecode}EndCases:TryAge:=strtoint (Edit1.text);ShowMessage

Question: int* p = 0x00000000; // pointer to NULL puts( "hello "); __try{ puts( "in try "); __try{ puts( "in try "); *p = 13; // causes an access violation