import os
import time from tqdm
import tqdmdef second(x):         
            return x[1]
path_0=input('输入文件路径,默认/Download/')  
path = '/storage/emulated/0/Download/'+path_0
#返回path中文件名列表
filelist = os.listdir(path)
list_1=[]
count=1
for file in filelist:         
      #拼接路径，生成完整路径                
      Olddir=os.path.join(path,file)        
      #获取文件大小        
      size=os.path.getsize(Olddir)           
      list_1.append(size)        	
#将filelist与list_1打包生成列表  
list_2=list(zip(filelist,list_1))
#根据文件大小升序排列
list_2.sort(key=second)
filelist,list_1=zip(*list_2)
amount=len(list_1)
filenamenew=[str(i).zfill(4) for i in 
range(count,count+amount+1)]
if amount<100:
    Time=0.04
elif amount<300:
    Time=0.01
else:
     Time=0.0001    
for file in tqdm(filelist):            
      Olddir=os.path.join(path,file)        
      #os.path.splitext("path")：分离文件名与扩展名             
      filename=os.path.splitext(file)[0]              
      filetype=os.path.splitext(file)[1]      
      if filename in filenamenew:
               print('-'*18,'Error','-'*18)         
               break         	     
      #zfill() 方法返回指定长度的字符串，原字符串右对齐，前面填充0      
      Newdir=os.path.join(path,
      str(count).zfill(4)+filetype)       
      os.rename(Olddir,Newdir)        
      time.sleep(Time)      
      count+=1
 print('修改完成')