还没有写完准备弡上cpickle 还有字典

#!/usr/bin/python
#Filename: cpickle.py
 
import cPickle as p
import os
 
shoplistfile="shoplist.data"
storedlist={}
 
def menu():
	running=True
	try:
		while running:
			try:
				f=file(shoplistfile)
				storedlist=p.load(f)
				command=raw_input("Please input command: ")
				if command=="help":
					help()
				elif command=="add":
					add(storedlist)
				elif command=="delete":
					delete(storedlist)
				elif command=="update":
					update(storedlist)
				elif command=="select":
					select(storedlist)
				elif command=="quit":
					running=False
				elif command=='show':
					show(storedlist)
				else:
					print "ERROR, please input help!"
			finally:
				f.close()
		else:
			print "Done"
	except EOFError:
		print "QUIT"
	except KeyboardInterrupt:
		print "Q"
	finally:
		print "DONE"
 
def show(storedlist):
	print '-'*40
	for (k,v) in storedlist.items():
		print '%s \t'%k,v
		print '-'*40
 
def add(storedlist):
	try:
		username=raw_input("Please input add username:")
		# print storedlist
		# print username
		if(storedlist.has_key(username)):
			print "Username Exist!!"
			return 0
		emailbox=raw_input("Please input add email:")
		storedlist[username]=emailbox
	except:
		print "err add"
	finally:
		write(storedlist)
 
def select(storedlist):
	try:
		username=raw_input("Please input select username:")
		if storedlist.has_key(username):
			print storedlist[username]
		else:
			print 'Username not find!!'
			return 0
	except:
		print "err select"
	finally:
		write(storedlist)
 
def delete(storedlist):
	try:
		username=raw_input("Please input delete username:")
		if storedlist.has_key(username):
			print storedlist[username]
		else:
			print 'Username not find!!'
			return 0
		storedlist.pop(username)
	except:
		print "err delete"
	finally:
		write(storedlist)
 
def update(storedlist):
	try:
		#not key ?
		username=raw_input("Please input update username:")
		if storedlist.has_key(username):
			print storedlist[username]
		else:
			print 'Username not find!!'
			return 0
		emailbox=raw_input("Please input update email:")
		storedlist[username]=emailbox
	except:
		print "err update"
	finally:
		write(storedlist)
 
def write(stored):
	f=file(shoplistfile,'w')
	p.dump(stored,f)
	f.close()
 
def index():
	if os.path.exists(shoplistfile):
		menu()
	else:
		print 'Contacts not find!'
		print 'Create Contacts...'
		create_con()
 
def create_con():
	shoplist={}
	try:
		f=file(shoplistfile,'w')
		p.dump(shoplist,f)
	except IOError:
		print 'find not file!!'
	finally:
		f.close()
		menu()
 
def help():
	"""
	------------------------
	==>>help
	==>>add < username email >
	==>>delete < username >
	==>>update < username newemail >
	==>>select < username >
	==>>quit
	------------------------"""
	print help.__doc__
 
if __name__=='__main__':
	index()

练习字典，看简明的python后面有一个练习，根据cPickle 写一个通讯录，恶心下自己！