try-except

问题 I'm having trouble for a while with error C2712: Cannot use __try in functions that require object unwinding , after narrowing the problem, I was left with a very very simple code, and i can not understand why it causes this error. I am using Visual Studio under windows. I am compiling with /EHa (I do not use /EHsc) The reason I use __try/__except and not try/catch is because I want to catch ALL the errors, and do not want the program to crash under any circumstances, including for example

问题 I'm having trouble for a while with error C2712: Cannot use __try in functions that require object unwinding , after narrowing the problem, I was left with a very very simple code, and i can not understand why it causes this error. I am using Visual Studio under windows. I am compiling with /EHa (I do not use /EHsc) The reason I use __try/__except and not try/catch is because I want to catch ALL the errors, and do not want the program to crash under any circumstances, including for example

问题 I'm trying to automate processes on a webpage that loads frame by frame. I'm trying to set up a try-except loop which executes only after an element is confirmed present. This is the code I've set up: from selenium.common.exceptions import NoSuchElementException while True: try: link = driver.find_element_by_xpath(linkAddress) except NoSuchElementException: time.sleep(2) The above code does not work, while the following naive approach does: time.sleep(2) link = driver.find_element_by_xpath

问题 Please, may somebody explain me, what can raise an exception in this code? function CreateBibleNames: TStrings; begin Result := TStringList.Create; try Result.Add('Adam'); Result.Add('Eva'); Result.Add('Kain'); Result.Add('Abel'); except Result.Free; raise; end; end; Since I use delphi I have used exception handling perhaps once. I consider the code above to be written by a skillfull programmer and I do not think the exceptions are redundant. But still, using exception handling in this

问题 Please, may somebody explain me, what can raise an exception in this code? function CreateBibleNames: TStrings; begin Result := TStringList.Create; try Result.Add('Adam'); Result.Add('Eva'); Result.Add('Kain'); Result.Add('Abel'); except Result.Free; raise; end; end; Since I use delphi I have used exception handling perhaps once. I consider the code above to be written by a skillfull programmer and I do not think the exceptions are redundant. But still, using exception handling in this

问题 I am trying to port some code using VC++'s try-except statement to MinGW: bool success = true; __try { //... } __except ((EXCEPTION_STACK_OVERFLOW == GetExceptionCode()) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) { success = false; _resetstkoflw(); } return success; Is it possible to write code that catches a stack overflow exception using MinGW g++? 回答1: You would need to manually call the Windows API functions which register exception handling; namely,

问题 My python try/except loop does not seem to trigger a keyboard interrupt when Ctrl + C is pressed while debugging my code in pycharm. My code look like this: numbers = [] loop = True try: # ===========SUBROUTINES================== def help(): print("To view the list type 'view'" "\n To add an item type 'add'" "\n To remove an item type 'remove'" "\n To exit type exit or Ctrl + c can be used at any time") # =========SUBROUTENES END=============== while loop: task = input("What do you want to do

问题 This question already has answers here : Weird Try-Except-Else-Finally behavior with Return statements (2 answers) Closed 6 years ago . There is the interesting code below: def func1(): try: return 1 finally: return 2 def func2(): try: raise ValueError() except: return 1 finally: return 3 func1() func2() Could please somebody explain, what results will return these two functions and explain why, i.e. describe the order of the execution 回答1: From the Python documentation A finally clause is

问题 I have seen this code posted here on StackOverflow: with TDownloadURL.Create(nil) do try URL := 'myurltodownload.com'; filename := 'locationtosaveto'; try ExecuteTarget(nil); except result := false; end; if not FileExists(filename) then result := false; finally free; end; Can't it be simplified to look like: Result:= FALSE; <--------- Compiler complains DeleteFile(Dest); dl:= TDownloadURL.Create(NIL); TRY dl.URL:= URL; dl.FileName:= Dest; dl.ExecuteTarget(NIL); Result:= FileExists(Dest);

问题 I am scrapping dictionary data from https://www.dictionary.com/ website. The purpose is to remove the unwanted elements from the dictionary pages and save them offline for further processing. Because of the webpages are somewhat unstructured there may and may not be the elements present that are mentioned in the code below to remove; the absence of the elements gives an exception (In snippet 2). And since in the actual code, there are many elements to be removed and they may be present or