pickle模块

import pickle

f = open('test.ini','w')

params = {	'access_token':'181770' , 
			'token_expires_in' : 2594366 ,
			'token_created_timestamp': 1341832737 ,
			'AAA':1111111111
			}

pickle.dump( params , f)

params['AAA']=22222
pickle.dump( params , f)

f.close()

#======================================
f = open('test.ini','r')
param1 = pickle.load(f)
print param1
''' 
输出的是：
{'access_token':'181770' , 
'token_expires_in' : 2594366 ,
'token_created_timestamp': 1341832737 ,
'AAA':1111111111
}
'''

param2 = pickle.load(f)
print param2
''' 
输出的是：
{'access_token':'181770' , 
'token_expires_in' : 2594366 ,
'token_created_timestamp': 1341832737 ,
'AAA':22222
}
'''
#param3 = pickle.load(f)
'''已经到最后了，再继续操作则出错了'''
try:
	param3 = pickle.load(f)
except EOFError:
	print 'EOFError'