如何利用Python遍历文件夹

如何利用Python遍历文件夹,第1张

1. 基本实现

[root@localhost ~]# cat dirfile.py

import os

path='/tmp'for dirpath,dirnames,filenames in os.walk(path):    for file in filenames:

fullpath=os.path.join(dirpath,file)            print fullpath

执行结果如下:

[root@localhost ~]# python dirfile.py

/tmp/yum.log/tmp/pulse-3QSA3BbwpQ49/pid/tmp/pulse-3QSA3BbwpQ49/native/tmp/.esd-0/socket

2. 在上例的基础上传递参数

import os,sys

path=sys.argv[1]for dirpath,dirnames,filenames in os.walk(path):    for file in filenames:

fullpath=os.path.join(dirpath,file)            print fullpath

执行方式为:[root@localhost ~]# python dirfile.py /tmp

在这里,sys.argv[1]是接受参数,也可以定义sys.argv[2]接受第二个参数

3. 如何用函数实现

import os,sys

path='/tmp'def paths(path):

path_collection=[]        for dirpath,dirnames,filenames in os.walk(path):                for file in filenames:

fullpath=os.path.join(dirpath,file)

path_collection.append(fullpath)        return path_collectionfor file in paths(path):        print file

4. 如何封装成类

import os,sysclass diskwalk(object):        def __init__(self,path):

self.path = path        def paths(self):

path=self.path

path_collection=[]                for dirpath,dirnames,filenames in os.walk(path):                        歼没银for file in filenames:

fullpath=os.path.join(dirpath,file)

path_collection.append(fullpath)                return path_collectionif __name__ == '__main__':        for file in diskwalk(sys.argv[1]).paths():                print file

PS:

1>def __init__():函数,也叫初始化函数。

self.path = path可以理解为初始化定义了1个变量。 在后面的def里面调用的时候必须要使用self.path而不察陆能使用path

2> __name__ == '__main__'

模块是对象,并且所有的模块都有一个内置属性 __name__。一个模块的 __name__ 的值取决于您如何应用模块。如果 import 一个模块,那么模块__name__ 的值通常为模块文件名,不带路径或者文件扩展名。但氏宴是您也可以像一个标准的程序样直接运行模块,在这种情况下, __name__ 的值将是一个特别缺省"__main__"。上述类中加上__name__ == '__main__'的判断语句,可以直接在终端环境下执行python dirfile.py /tmp进行测试,不必非得在交互式环境下导入模块进行测试。

#include <stdio.h>

#include <dos.h>

#include <errno.h>

#include <io.h>

#include <dirent.h>

#include <dir.h>

#include <string.h>

#include <sys\stat.h>

#include "pm03a.h"

void main(int argc,char* argv[])

{

//printf("Number %d\n",ConfirmFileAttrib(argv[1]))

GetDirectory(argv[1])

printf("\nSearch Over.\n")

}

//------------------------------------------------------------------

//pm03a.h

//------------------------------------------------------------------

void GetDirectory(char *DirectoryName)

int ConfirmFileAttrib(char* filename)

char *GetCurrentPath()

char* GetFullFileName(char *filename)

char *WillDeleteFile(char *FileName)

//--------------------------------------------------------

//--------------- 获得文件属性 ---------------------------

//--------------------------------------------------------

int ConfirmFileAttrib(char* filename)

{

int temp=0

int attrib=(_rtl_chmod(filename,0))

if(attrib==-1)

{

switch(errno)

{

case ENOENT:

//printf("%s Path or file not found.\n",filename)

temp=0

break

case EACCES:

//printf("Permission denied.\n")

temp=-1

break

default:

//printf("Error number: %d", errno)

temp=-2

break

}

}

else

{

if(attrib & FA_RDONLY)

{

temp=1

//printf("%s is read-only.\n", filename)

}

if(attrib & FA_HIDDEN)

{

temp=2

//printf("%s is hidden.\n", filename)

}

if(attrib & FA_SYSTEM)

{

temp=3

//printf("%s is a system file.\n", filename)

}

if(attrib & FA_DIREC)

{

temp=4

//printf("%s is a directory.\n", filename)

}

if (attrib & FA_ARCH)

{

temp=5

//printf("%s is an archive file.\n", filename)

}

}

return temp

}

//--------------------------------------------------------

//--------------------------------------------------------

//--------------- 获取目录流 -----------------------------

//--------------------------------------------------------

void GetDirectory(char *DirectoryName)

{

DIR* Directory_Point

struct dirent *entry

bool DirControl

if((Directory_Point=opendir(DirectoryName))==NULL)

{

printf("Error opening directory!\n")

return

}

else

{

if(strcmp(DirectoryName,"..")==0)

{

return

}

if(strcmp(DirectoryName,".")==0)

DirControl=true

else

DirControl=false

chdir(DirectoryName)

//char *filename=DirectoryName

//int k=creat(strcat(filename,".txt"),S_IWRITE)

while(bool(entry=readdir(Directory_Point)))

{

if(ConfirmFileAttrib(entry->d_name)==5) // 确定为文件属性

{

// 文件过滤

WillDeleteFile(entry->d_name)

}

if(ConfirmFileAttrib(entry->d_name)==4) // 确定为目录属性

{

if(strcmpi(entry->d_name,"..")==0||strcmpi(entry->d_name,".")==0)

{

continue

}

else

{

//printf("\n%s is direct\n\n",entry->d_name)

GetDirectory(entry->d_name)

}

}

}

if(!DirControl==true)

chdir("..")

closedir(Directory_Point)

}

}

//--------------------------------------------------------

//--------------------------------------------------------

//---------- 判断文件类型以备过滤 ------------------------

//--------------------------------------------------------

char* GetFullFileName(char *filename)

{

char *FullFilename=GetCurrentPath()

if(strlen(FullFilename)<=3)

{

strcat(FullFilename,filename)

}

else

{

strcat(FullFilename,"\\")

strcat(FullFilename,filename)

}

return FullFilename

}

char *GetCurrentPath()

{

char path[1024]=""

strcpy(path, "X:\\")/* fill string with form of response: X:\ */

path[0] = 'A' + getdisk()/* replace X with current drive letter */

getcurdir(0, path+3)/* fill rest of string with current directory */

return path

}

char *WillDeleteFile(char *FileName)

{

int len

for(len=strlen(FileName)len>=0len--)

{

if(FileName[len]=='.')

break

}

char* Retname

int s=-1

for(int i=leni<=strlen(FileName)i++)

{

Retname[s+=1]=FileName[i]

}

int i=-1

if(Retname[1]=='~')i=0

if(strcmpi(Retname,".bak")==0)i=0

if(strcmpi(Retname,".obj")==0)i=0

if(strcmpi(Retname,".tds")==0)i=0

if(strcmpi(Retname,".dcu")==0)i=0

if(strcmpi(Retname,".tmp")==0)i=0

if(strcmpi(Retname,".ilk")==0)i=0

if(strcmpi(Retname,".pch")==0)i=0

if(strcmpi(Retname,".pdb")==0)i=0

if(strcmpi(Retname,".tlb")==0)i=0

if(strcmpi(Retname,".idb")==0)i=0

if(strcmpi(Retname,".pdb")==0)i=0

if(strcmpi(Retname,".r$p")==0)i=0

if(strcmpi(Retname,".OBR")==0)i=0

if(strcmpi(Retname,".mbt")==0)i=0

if(strcmpi(Retname,".mrt")==0)i=0

if(strcmpi(Retname,".csm")==0)i=0

if(i==0)

{

remove(GetFullFileName(FileName))

printf("%s delete\n",GetFullFileName(FileName))

}

return Retname

}


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原文地址: http://outofmemory.cn/tougao/12308128.html

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