#-*-coding:utf-8-*-    
 
#===============================================================================  
# 目录对比工具(包含子目录 )，并列出
# 1、A比B多了哪些文件  
# 2、B比A多了哪些文件  
# 3、二者相同的文件:文件大小相同 VS 文件大小不同  (Size相同文件不打印:与Size不同文件显示未排序)
# 4、可通过修改，比较文件名且包含文件格式或者只比较文件名但不包括格式后缀。
#===============================================================================  
 
import os, time,difflib,sys


AFILES = []  #EE
BFILES = []  #SVN
COMMON = []  #EE & SVN
def getPrettyTime(state):
    return time.strftime(‘%y-%m-%d %H:%M:%S‘, time.localtime(state.st_mtime))

# def getpathsize(dir): #获取文件大小的函数,未用上,仅供学习.故注释掉
#     size=0
#     for root, dirs, files in os.walk(dir):
#     #root:目录:str 如: C:\CopySVN\SystemObject\TopoProcedure\Built-in\
#     #dirs:目录名称:列表: 如 [‘Parsers‘]
#     #files:名称:列表: 如 [‘011D0961FB42416AA49D5E82945DE7E9.og‘,...]
#     #file:目录:str, 如 011D0961FB42416AA49D5E82945DE7E9.og
#         for file in files:
#             path = os.path.join(root,file)
#             size = os.path.getsize(path)
#     return size

def dirCompare(apath,bpath):
    afiles = []
    bfiles = []
    for root, dirs , files in os.walk(apath):
        print apath,‘All files numbers:‘,len(files)
        for f in files:
            #比较文件名不含格式后缀
            #afiles.append(root + f[0:-4])
            
            #比较文件名含格式后缀
            afiles.append(root + f)
    for root, dirs , files in os.walk(bpath):
        print bpath,‘All files numbers:‘,len(files)
        for f in files:
            #比较文件名不含格式后缀
            #bfiles.append(root + f[0:-4])
            
            #比较文件名含格式后缀
            bfiles.append(root + f)
            #sizeB = os.path.getsize(root + "/" + f) 此处定义的size无法在commonfiles进行比较. (A,B在各自的循环里面)

    # 去掉afiles中文件名的apath (拿A,B相同的路径\文件名,做成集合,去找交集)
    apathlen = len(apath)
    aafiles = []
    for f in afiles:
        aafiles.append(f[apathlen:])

    # 去掉bfiles中文件名的bpath
    bpathlen = len(bpath)
    bbfiles = []
    for f in bfiles:
        bbfiles.append(f[bpathlen:])

    afiles = aafiles
    bfiles = bbfiles
    setA = set(afiles)
    setB = set(bfiles)
    #print(‘%$%‘+str(len(setA)))
    #print(‘%%‘+str(len(setB)))
    commonfiles = setA & setB  # 处理共有文件
    #print ("===============File with different size in ‘", apath, "‘ and ‘", bpath, "‘===============")
    #将结果输出到本地
    #with open(os.getcwd()+‘diff.txt‘,‘w‘) as di:
        #di.write("===============File with different size in ‘", apath, "‘ and ‘", bpath, "‘===============")
    for f in sorted(commonfiles):
        sA=os.path.getsize(apath + "/" + f)
        sB=os.path.getsize(bpath + "/" + f)
        if sA==sB:  #共有文件的大小比较
            #pass #print (f + "\t\t" + getPrettyTime(os.stat(apath + "/" + f)) + "\t\t" + getPrettyTime(os.stat(bpath + "/" + f)))
            #以下代码是处理大小一致，但是内容可能不一致的情况
            #print("in sa=sb")
            #print(os.getcwd())
            saf=[]
            sbf=[]
            sAfile=open(apath + "/" + f)
            iter_f=iter(sAfile)
            for line in iter_f:
                saf.append(line)
            sAfile.close()
            sBfile=open(bpath + "/" + f)
            iter_fb=iter(sBfile)
            for line in iter_fb:
                sbf.append(line)
            sBfile.close()
            saf1=sorted(saf)
            sbf1=sorted(sbf)
            if(len(saf1)!=len(sbf1)):
                with open(os.getcwd()+‘/comment_diff.txt‘,‘a‘) as fp:
                    print(os.getcwd())
                    fp.write(apath + "/" + f+" lines size not equal "+bpath + ‘/‘ + f+‘\n‘)
            else:
                for i in range(len(saf1)):
                    #print("into pre")
                    if(saf1[i]!=sbf1[i]):
                        print(‘into commont‘)
                        with open(os.getcwd()+‘/comment_diff.txt‘,‘a‘) as fp1:
                            fp1.write(apath + "/" + f+" content not equal "+bpath + "/" + f+‘\n‘)
                            break


        else:
            with open (os.getcwd()+‘/diff.txt‘,‘a‘) as di:
                di.write("File Name=%s    EEresource file size:%d   !=  SVN file size:%d" %(f,sA,sB)+‘\n‘)

            #print ("File Name=%s    EEresource file size:%d   !=  SVN file size:%d" %(f,sA,sB))

    # 处理仅出现在一个目录中的文件
    onlyFiles = setA ^ setB
    aonlyFiles = []
    bonlyFiles = []
    for of in onlyFiles:
        if of in afiles:
            aonlyFiles.append(of)
        elif of in bfiles:
            bonlyFiles.append(of)
    
    print apath,‘only files numbers:‘,len(aonlyFiles)
    print bpath,‘only files numbers:‘,len(bonlyFiles)
    #print ("###################### EE resource ONLY ###########################")
    #print ("#only files in ", apath)
    if os.path.exists(os.getcwd()+‘/Aonly.txt‘):
        os.remove(os.getcwd()+‘/Aonly.txt‘)
    if os.path.exists(os.getcwd()+‘/Bonly.txt‘):
        os.remove(os.getcwd()+‘/Bonly.txt‘)


    for of in sorted(aonlyFiles):
        with open (os.getcwd()+‘/Aonly.txt‘,‘a‘) as a:
            a.write(of+‘\n‘)

        #print (of)
    #print ("*"*20+"SVN ONLY+"+"*"*20)
    #print ("#only files in ", bpath)
    for of in sorted(bonlyFiles):
        with open (os.getcwd()+‘/Bonly.txt‘,‘a‘) as b:
            b.write(of+‘\n‘)
        #print (of)

if __name__ == ‘__main__‘:
    FolderEE = sys.argv[1]
    FolderSVN = sys.argv[2]
    dirCompare(FolderEE, FolderSVN)
    print("done!")

ps：本文参考 http://www.cnblogs.com/luo-mao/p/5872532.html 猫儿爹，经修改符合自身使用，感谢作者。

python 比较两文件夹的内容,具有通用性。