python 之文件追加

文件的追加和读取：

 

#!/usr/bin/env python

import sys;

def WriteFile(strPath, strVal):
    file = None;
    bRet = False;
    
    if not strPath or not strVal:
        return False;
    
    try:
        file = open(strPath, "a+");
        file.write(strVal);
        file.flush();
        bRet = True;
    finally:
        if file:
            file.close();
            file = None;
    
    return bRet;

def ReadFile(strFile):
    file = None;
    bRet = False;
    strVal = "";
    
    if not strFile:
        return [bRet, strVal];
    
    try:
        file = open(strFile, "r");
        strVal = file.read();
        bRet = True;
    finally:
        if file:
            file.close();
            file = None;
            
    return [bRet, strVal];

if "__main__" == __name__:
    strFile = "./a.log";
    strWrite = "hello, andylin!\n";
    if not WriteFile(strFile, strWrite):
        print("write file failed!");
        sys.exit(1);
    
    lsRead = ReadFile(strFile);
    if not lsRead[0]:
        print("read file failed!");
    else:
        print("read str:%s" %lsRead[1]);
    
    sys.exit(0);