exception-handling

问题 I have a python function that runs other functions. def main(): func1(a,b) func2(*args,*kwargs) func3() Now I want to apply exceptions on main function. If there was an exception in any of the functions inside main, the function should not stop but continue executing next line. In other words, I want the below functionality def main(): try: func1() except: pass try: func2() except: pass try: func3() except: pass So is there any way to loop through each statement inside main function and apply

问题 I have a python function that runs other functions. def main(): func1(a,b) func2(*args,*kwargs) func3() Now I want to apply exceptions on main function. If there was an exception in any of the functions inside main, the function should not stop but continue executing next line. In other words, I want the below functionality def main(): try: func1() except: pass try: func2() except: pass try: func3() except: pass So is there any way to loop through each statement inside main function and apply

问题 I've written a program that needs to deal with a function that can throw multiple exceptions. For each exception I catch I have some code that will handle it specifically. However, I also have some code I want to run no matter which exception was caught. My current solution is a handle_exception() function which is called from each except block. try: throw_multiple_exceptions() except FirstException as excep: handle_first_exception() handle_exception() except SecondException as excep: handle

问题 Instead of throwing new Exception("Some message", maybeSomeCause) , which means that all callers of my method will need to catch Exception (which can include RuntimeExceptions), I'd like to throw a more specific type of exception when a problem occurs. I can create my own exception types which extend Exception or another exception type, but I am curious if it is a good idea to re-use some exceptions that come with core Java language, such as: IllegalArgumentException

问题 I have my (native C++) DLL project and a corresponding test EXE project based on Google Test. While debugging my DLL via this EXE I have exceptions automatically handled by Google Test. So if my DLL throws an unhandled exception during debug, I expect to see error message from Visual Studio with debug session paused after the code caused exception. Instead, I have breakpoint triggered in gtest.cc. And if I disable --gtest_break_on_failure flag I will receive no breaks at all. I found no such

问题 I have a class that has the following virtual function namespace Book { class Secure { virtual Result setPassword(const std::map<std::string, std::vector<std::string> >& params)=0; } } I have another test class in which a method gets the password and user name from the excel and sets it to the map secureParams and sets the password for the current file. bool initialize(std::string bookPath, std::string loginPath, std::string userName, std::string password) { Book::SharedPtr<Book::Secure>

问题 Here is the portion of code I speak about. try { std::cerr << "first try" << std::endl; po::store(po::parse_config_file(ifs, _configFileOptions, false), vm); } catch(...) { std::cerr << "second try" << std::endl; } Just for the seek of details , I m using boost program_options to parse a configuration file. An exception is raised by boost since I put an option in the file that is unrecognized. There is a problem with Clang not catching this exception. Basically I only see in the output first

问题 I have a try-except block in Python 3.3, and I want it to run indefinitely. try: imp = int(input("Importance:\n\t1: High\n\t2: Normal\n\t3: Low")) except ValueError: imp = int(input("Please enter a number between 1 and 3:\n> ") Currently, if a user were to enter a non-integer it would work as planned, however if they were to enter it again, it would just raise ValueError again and crash. What is the best way to fix this? 回答1: Put it inside a while loop and break out when you've got the input

问题 Sometimes it's desirable to use a higher isolation level than the default "read committed" for database operations in Django. The docs warn that: Under higher isolation levels, your application should be prepared to handle exceptions raised on serialization failures. But which specific exceptions indicate a serialization failure, versus some other problem with the query or transaction? A simple retry mechanism after a serialization failure might look like something like this: for retries in

问题 I have recently started digging into error handling in Powershell and I noticed something that I do not really understand (I cannot tell where this behaviour is coming from). I have a simple function, which checks for domain name using [System.Net.DNS]::GetHostByName() If this variable gets passed a non-existing host, it throws a nasty error Exception calling "GetHostByName" with "1" argument(s): "No such host is known" I then want to catch the error and do some cosmetics around it $Error[0]