python try else

Else in other languages can only be combined with if, which is our common if...else, but Python gives new claims to else. It can be used in tandem with while, for, and try.Here we describe the effects of using while concatenation.count=0 while count>

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

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

If you are studying python or other programming languages with exception Control, it is very likely that the execution of try catch finally is very simple. If there is an exception, execute retry T, finally is executed regardless of whether there

Beginning Python from Novice to Professional, 2nd Edition, CHAPTER 8, EXCEPTIONS, Page 173: This description in the body: The point was that using try/except statements are in many cases much more natural (more ' pythonic ') than If/else, and you

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"

Try : statement ... except Name of exception: statement ...If no exception occurs, run the statement under try and, if an exception occurs, run the statement below except., the exception type after epcept only takes effect when the

Use try, cmdt, and else To make the Python program more "strong", using tpython In the executed program, fatal errors may occur due to some reasons, such as input and output (for example, the input file name is incorrect and the relevant Code cannot

An exception occurred while writing the program, and the program may not function correctly. In this case, you need to introduce exception handling1.try ... exceptTry to write the normal running program code, except is the exception condition1 a=3 2

1.python try/except/else/finally The normal statement is this:TryNormal Excute blockExcept A:Except A HandleExcept B:Except B HandleExceptOther exception handleElseIf no exception,get hereFinallyPrint (hello World)DescriptionThe normally executed