python 教程 第十四章、 地址薄作业

#A Byte of Python
#!/usr/bin/env python
import cPickle
import os
#define the contacts file, list
global file_contacts
global list_contacts
file_contacts = 'AddressBook.txt'
list_contacts = []
#delete the file
try:
file_path = os.getcwd() + os.sep + file_contacts
if os.path.isfile(file_path):
os.remove(file_contacts)
f = file(file_contacts,'w')
f.close()
#define the class of contacts and implement the methods
class class_contacts:
def __init__(self, list_contacts):
self.contacts = list_contacts
def append(self, name, mail):
dict_contacts = {'Name': name, 'Mail': mail}
self.contacts.append(dict_contacts)
def find(self, name):
found = False
for instance_contacts in list_contacts:
if name == instance_contacts['Name']:
found = True
print " Found:", name, ", PASS"
break
if not found:
print " Found:", name, ", FAIL"
def modify(self, name, mail):
for instance_contacts in list_contacts:
if name == instance_contacts['Name']:
instance_contacts['Mail'] = mail
break
def delete(self, name):
index = -1
for instance_contacts in list_contacts:
index += 1
if name == instance_contacts['Name']:
del list_contacts[index]
def show(self):
for list in list_contacts:
print list
def save(self):
fa = file(file_contacts, "a")
cPickle.dump(self.contacts, fa)
fa.close()
i = class_contacts(list_contacts)
i.append('joan', 'joan@123.com')
i.append('adny', 'adny@123.com')
i.append('xixi', 'xixi@123.com')
i.find('joan')
i.find('joab')
print "Original List:"
i.show()
print "after modify adny"
i.modify('adny', 'adnX@123.com')
i.show()
print "after del joan"
i.delete('joan')
i.show()
i.save()
except TypeError:
print "TypeError"
except:
print "Other Error occured"