"outsourcing" exception-handling to a decorator Question: Many try/except/finally-clauses not only “uglify” my code, but i find myself often using identical exception-handling for similar tasks. So i was considering reducing redundancy by “outsourcing” them to a … decorator. Because i was sure not to be the 1st one to come to this conclusion, I googled and …
Can I get the local variables of a Python function from which an exception was thrown? Question: I’m writing a custom logging system for a project. If a function throws an exception, I want to log its local variables. Is it possible to access the raising function’s local variables from the except block that caught …
Better to 'try' something and catch the exception or test if it's possible first to avoid an exception? Question: Should I test if something is valid or just try to do it and catch the exception? Is there any solid documentation saying that one way is preferred? Is one way more pythonic? For example, should …
try / else with return in try block Question: I came across a strange behavior in python. I could not find information about this in the python help or on SE so here it is: def divide(x, y): print ‘entering divide’ try: return x/y except: print ‘error’ else: print ‘no error’ finally: print ‘exit’ print …
Catching all exceptions in Python Question: In Python, what’s the best way to catch “all” exceptions? except: # do stuff with sys.exc_info()[1] except BaseException as exc: except Exception as exc: The catch may be executing in a thread. My aim is to log any exception that might be thrown by normal code without masking any …
Catch any error in Python Question: Is it possible to catch any error in Python? I don’t care what the specific exceptions will be, because all of them will have the same fallback. Asked By: user825286 || Source Answers: Using except by itself will catch any exception short of a segfault. try: something() except: fallback() …
Catch multiple exceptions in one line (except block) Question: I know that I can do: try: # do something that may fail except: # do this if ANYTHING goes wrong I can also do this: try: # do something that may fail except IDontLikeYouException: # say please except YouAreTooShortException: # stand on a ladder But …
Raising exceptions when an exception is already present in Python 3 Question: What happens to my first exception (A) when the second (B) is raised in the following code? class A(Exception): pass class B(Exception): pass try: try: raise A(‘first’) finally: raise B(‘second’) except X as c: print(c) If run with X = A I get: …
Logging uncaught exceptions in Python Question: How do you cause uncaught exceptions to output via the logging module rather than to stderr? I realize the best way to do this would be: try: raise Exception, ‘Throwing a boring exception’ except Exception, e: logging.exception(e) But my situation is such that it would be really nice if …
One try block with multiple excepts Question: In Python, is it possible to have multiple except statements for one try statement? Such as: try: #something1 #something2 except ExceptionType1: #return xyz except ExceptionType2: #return abc For the case of handling multiple exceptions the same way, see Catch multiple exceptions in one line (except block) Asked By: …
