1.文件的寫入和讀取
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#!/usr/bin/python # -*- coding: utf-8 -*- # Filename: using_file.py # 文件是創建和讀取 s = '''''我們都是木頭人， 不許說話不許動！''' # 創建一個文件，并且寫入字符 f = file('test_file.txt', 'w') f.write(s) f.close() # 讀取文件，逐行打印 f = file('test_file.txt') while True: line = f.readline() # 如果line長度為0，說明文件已經讀完了 if len(line) == 0: break # 默認的換行符也讀出來了，所以用逗號取代print函數的換行符 print line, f.close() |
執行結果：
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我們都是木頭人，不許說話不許動！ |
2.存儲器的寫入和讀取
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#!/usr/bin/python # -*- coding: utf-8 -*- # Filename using_pickle.py # 使用存儲器 #加載存儲器模塊，as后面是別名 #import pickle as p #書上說cPickle比pickle快很多 import cPickle as p listpickle = [1, 2, 2, 3] picklefile = 'picklefile.data' f = file(picklefile, 'w') # 寫如數據 p.dump(listpickle, f) f.close() del listpickle f = file(picklefile) # 讀取數據 storedlist = p.load(f) print storedlist f.close() |
執行結果：
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[1, 2, 2, 3] |
再來看一個使用cPickle儲存器存儲對象的例子
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#!/usr/bin/python #Filename:pickling.py import cPickle as p shoplistfile = 'shoplist.data' shoplist = ['apple', 'mango', 'carrot'] f = file(shoplistfile, 'w') p.dump(shoplist, f) f.close() del shoplist f = file(shoplistfile) storedlist = p.load(f) print storedlist |
