throwing an exception python
raise Exception("message")
python try catch
try: # Dangerous stuff except ValueError: # If you use try, at least 1 except block is mandatory! # Handle it somehow / ignore except (BadThingError, HorrbileThingError) as e: # Hande it differently except: # This will catch every exception. else: # Else block is not mandatory. # Dangerous stuff ended with no exception finally: # Finally block is not mandatory. # This will ALWAYS happen after the above blocks.
python try except
import sys try: f = open('myfile.txt') s = f.readline() i = int(s.strip()) except OSError as err: print("OS error: {0}".format(err)) except ValueError: print("Could not convert data to an integer.") except: print("Unexpected error:", sys.exc_info()[0]) raise
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