Exceptions in the 05-python

All of Python's exceptions inherit from the base class: Exception

Handled in a similar way to Java:

Path = Raw_input ('Input the path') Array= Path.split ('/')Try: module= __import__ ('model.'+ array[0]) Model= GetAttr (module, array[0]) func= GetAttr (model, array[1] func () except (Importerror, Attributeerror, Nameerror), E:print (e)finally: Print ('finally to do')

Multiple exception snaps, either using a continuous exept or using parentheses for snapping

Import SYSTry: F= Open ('MyFile.txt') s=f.readline () I=int(S.strip ()) except OSError asErr: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
else:
Print (' Else method ')

Python's exception has an ELSE clause that executes without any exception.

Custom Exceptions:

Like other languages, Python can also make custom exceptions and throw them;

class myexception (Exception):    def __init__ (self, name):        = name    # Override string method     *args, * * Kwargs):        return self.name

The way to throw in other places:

Try :    print ('start ... ' )    raise MyException ('raise exception' as err:    print (ERR) finally :    print ('finally')

Use the Raise keyword to throw

Exceptions in the 05-python