实现遍历：
#coding=utf-8#遍历的2种方式import os#1.使用os.listdir(f)def traverse(f): fs = os.listdir(f) for f1 in fs: tmp_path = os.path.join(f,f1) if not os.path.isdir(tmp_path): print('文件: %s'%tmp_path) else: print('文件夹：%s'%tmp_path) traverse(tmp_path) path = 'F:/source_files/python/'traverse(path)#2.使用os.walkpath = 'F:/source_files/python/' for fpathe,dirs,fs in os.walk(path): for f in fs: print(os.path.join(fpathe,f))
案例1：
#coding=utf-8'''Created on 2018年8月28日@author: yanerfree获取某一目录下所有的sql文件'''import osimport shutil def traverse(file_path,save_fath): list = os.listdir(file_path) for i in range(0,len(list)): #print list[i] tmp_path = os.path.join(file_path,list[i]) #print tmp_path if os.path.isfile(tmp_path): if str(list[i])[-3:] == "sql": #复制改文件到指定目录下 #print "sql文件",list[i] save_as = os.path.join(save_fath,str(list[i])) #print save_as shutil.copyfile(tmp_path, save_as) else: traverse(tmp_path,save_fath) if __name__ == '__main__': starttime=datetime.datetime.now().microsecond file_path = r'./DCKeyMgrSystemExts' save_fath = r'./sql' traverse(file_path, save_fath) endtime=datetime.datetime.now().microsecond costtime=endtime-starttime print "totally cost %d ms"%costtime
案例2：
#coding=utf-8'''Created on 2018年8月28日@author:yanerfreeget the version number of the file (.dll) in bulk批量获取dll文件的版本号'''import osimport sysimport win32apiimport xlwtfrom xlwt import *class GetFileVersionNo(): def __init__(self,file_path,save_path): #初始化 self.file_path = file_path self.save_path = save_path def traverse_dir(self,file_path): #traverse the directory of file_path（the file are .dll） myList=[]#save result list = os.listdir(file_path) for i in range(0,len(list)): print list[i] tmp_path = os.path.join(file_path,list[i]) print tmp_path if os.path.isfile(tmp_path): #if str(list[i]).split(".")[1] =="dll": if str(list[i])[-3:] == "dll": #judge if the filename ended with ".dll" #print tmp_path,getFileVersion(tmp_path) myList.append((list[i],self.getFileVersion(tmp_path))) return myList def getFileVersion(self,file_name): #get the version of file info = win32api.GetFileVersionInfo(file_name, os.sep) ms = info['FileVersionMS'] ls = info['FileVersionLS'] version = '%d.%d.%d.%04d' % (win32api.HIWORD(ms), win32api.LOWORD(ms), win32api.HIWORD(ls), win32api.LOWORD(ls)) print version return version def writeToExcel(self): file_path = self.file_path save_path = self.save_path #write to excel print "create a workbook" book = Workbook(encoding='utf-8')#create a workbook sheet = book.add_sheet('Sheet1')#create a sheet #set style font = xlwt.Font() # 字体 font.name = 'Times New Roman' font.bold = True font.underline = False font.italic = False style = xlwt.XFStyle() # 创建一个格式 style.font = font # 设置格式字体 #sheet.write(0, 0, label = 'Formatted value', style) # Apply the Style to the Cell sheet.write(0, 0, "no",style) sheet.write(0, 1, "file_name",style) sheet.write(0, 2, "file_version",style) list = self.traverse_dir(file_path) row=0 num=0 for item in list: row += 1 num += 1 sheet.write(row, 0, num, style) sheet.write(row, 1,item[0] , style) sheet.write(row, 2,item[1] , style) book.save(save_path)if __name__ == '__main__': #1)获取指定目录下dll文件的版本号 file_path1 = r'../01_dev/Exts' save_path1 = r'../04_result/result_dev.xls' getVersion1 = GetFileVersionNo(file_path1,save_path1) getVersion1.writeToExcel()