python版本导致的错误

解决：修改为：即可。

# Filename: raising.py

classShortInputException(Exception):
'''A user-defined exceptiong class.'''
def__init__(self,length,atleast):
Exception.__init__(self)
self.length=length
self.atleast=atleast
try:
s=input('Enter something --> ')
iflen(s)<3:
raiseShortInputException(len(s),3)
# Other work can continue as usual here
exceptEOFError:
print('\nWhy did you do an EOF on me?')
exceptShortInputExceptionasx:
print('ShortInputException: The input was of length %d, \
was expecting at least %d'%(x.length,x.atleast))
else:
print('No exception was raised.')

# Filename: pickling.py

# import cPickle as p   cPickle is not exist
importpickleasp

shoplistfile='shoplist.data'
# the name of the file where we will store the object

shoplist=['apple','mango','carrot']

# Write to the file
f=open(shoplistfile,'wb')
p.dump(shoplist,f)# dump the object to a file
f.close

delshoplist# remove the shoplist

# Read back from the storage
f=open(shoplistfile,'rb')
storedlist=p.load(f)
print(storedlist)

poem='''\
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python!
'''

f=open('poem.txt','w')# open for 'w'riting
f.write(poem)# write text to file
f.close()# close the file

f=open('poem.txt')
# if no mode is specified, 'r'ead mode is assumed by default
whileTrue:
line=f.readline()
iflen(line)==0:# Zero length indicates EOF
break
print(line),
# Notice comma to avoid automatic newline added by Python
f.close()# close the file