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  • python学习之路三(文件读写)

    # -*- coding: utf-8 -* 
    '''
    Created on 2013-7-29
    
    @author: lixingle
    '''
    import os  #引入操作文件和目录的函数包
    import pickle
    #数据持久化..................................................
    #写入文件
    fout=open('g://test.txt','w')#如果要写入第二个参数 要写‘w’
    fout.write('你好吗?')
    fout.write('好') #接着写
    #格式输入,多个占位符时后面要跟一个元组
    line='my name is %s age is %d'%('lixingle',22)
    print line
    fout.write('
    '+line) #接着写
    #文件内如下:
    #你好吗?好
    #my name is lixingle age is 22
    
    fout.close()#关闭文件
    
    cwd=os.getcwd()
    print cwd #D:JAVATikuSiYuePythonPythonDemosrcdemos
    print os.path.abspath('test.txt')#返回绝对路径
    print os.path.isdir('test.txt')#False 判断是否为目录
    #捕获异常......................................................
    try:
        fop=open('g://test')
        for line in fop:
            print line
        fop.close()   
    except:
        print 'Something went wrong'
    
    #读取文件
    try:
        fop=open('g://test.txt')
        line=fop.readline()#读取一行
        print line
        fop.close()   
    except:
        print 'Something went wrong'
    

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  • 原文地址:https://www.cnblogs.com/lixingle/p/3312969.html
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