class ShortInputException(Exception):
'''A user-defined exception class.'''
def __init__(self, length, atleast):
Exception.__init__(self)
self.length = length
self.atleast = atleast
try:
s = input('Enter someting-->')
if len(s)<3:
raise ShortInputException(len(s), 3)
except EOFError:
print('\nWhy did you do an EOF on me?')
except ShortInputException as x:
#python3 中把except ShortInputException, x: 改为了 ShortInputException as x print('ShortInputException:The input was of length %d,\
was expecting at least %d' %(x.length,x.atleast))
else:
print('No exception was raised.')
