python 基础系列10-文件操作

矫情吗；* 2023-07-06 10:30 10阅读 0赞

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# python 基础系列10-文件操作
    
    # 引入sys库
    import sys
    import copy
    from functools import reduce
    
    if __name__ == '__main__':
        # 读取txt文本 读取需要指定权限
        myfile = open('C:\\Users\\Administrator\\Desktop\\test.txt', 'r')
        # 进行操作
        # mystr =myfile.read()
        # 读取单行
        # mystr2 =myfile.readline()
        # print(mystr2)
    
        # 全读取出来保存在列表
        mystr3 = myfile.readlines()  # ['11122\n', 'dfdsdsf\n', 'dsffs\n', '222\n', '333\n', '355fff']
        print(mystr3, len(mystr3))
    
        # 修改访问位置
        myfile.seek(0, 0)
    
        mylist = []
        # 遍历循环
        for var in myfile:
            mylist.append(var)
            print(var)
        print(mylist)
    
        # 写文件
        myfile2 = open('C:\\Users\\Administrator\\Desktop\\test.txt', 'w')
        # myfile2.write('ddddd') #这里会覆盖
    
        # 设置权限 ,结果会是追加
        myfile3 = open('C:\\Users\\Administrator\\Desktop\\test2.txt', 'a')
        myfile3.write('dfrggg')
    
        # 当前写入是写入到了内存里面，我们需要写入到磁盘，两种方式:文件关闭
        myfile3.flush()
        myfile3.close()
    
        #文件拷贝
        myfile_c1 = open('C:\\Users\\Administrator\\Desktop\\test3.txt', 'r')
        myfile_c2 = open('C:\\Users\\Administrator\\Desktop\\test4.txt', 'a')
    
        mystr_c1 = myfile_c1.readlines()
        print(mystr_c1)
        myfile_c2.writelines(mystr_c1)
        myfile_c1.close()
        myfile_c2.close()
        
        # 权限 r w a  r+ w+ a+权限

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