封装方法1：定义一个类，实现读文件、写文件的方法_利用所学读写文件类封装一个读文件接口一个写文件接口,并完成对文件的读写-优快云博客

本文链接：https://blog.youkuaiyun.com/jiajiajia_800/article/details/90768895

本文介绍了一个用于读取和写入文件的Python类设计。该类提供了读取和写入文件的方法，支持路径设置和多种文件操作模式。通过实例化该类并调用其方法，可以方便地进行文件读写操作。

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定义一个类，实现读文件、写文件的方法
import os
class ReadAndWrite(object):
def init(self,path):
self.file_path = path

def read_file(self,path=None,mode='r',buffering='utf-8'):
    if path is not None:
        self.file_path = path
    if not (os.path.exists(self.file_path) or os.path.isfile(self.file_path)):
        return '文件不存在'
    try:
        print(self.file_path,mode,buffering)
        with open(self.file_path,mode,buffering) as fp:
            content = fp.read()
        return content
    except TypeError:
        with open(self.file_path,mode) as fp:
            content = fp.read()
        return content
    except Exception as e:
        return e

def write_file(self, path=None, mode='w',buffering='utf-8',write_info=None):
    if path is not None:
        self.file_path = path
    if not (os.path.exists(self.file_path) or os.path.isfile(self.file_path)):
        return '文件不存在'
    if mode == 'r':
        return '文件操作模式不正确'
    try:
        with open(self.file_path,mode,buffering) as fp:
            fp.write(str(write_info))
            return True
    except TypeError:
        with open(self.file_path,mode) as fp:
            fp.write(str(write_info))
            return True
    except Exception as e:
        return e

rw = ReadAndWrite(‘D:\python’)
rw = ReadAndWrite(‘D:\python\no.txt’)
r = rw.read_file(path=None,mode=‘r’,buffering=‘utf-8’)
print(‘读文件内容：’,r)

r = rw.write_file(path=None,mode=‘r’,buffering=‘utf-8’)
r = rw.write_file(path=None,mode=‘w’,buffering=‘utf-8’)
print(‘写文件内容：’,r)