如何在搜索不存在的文件時處理UnicodeDecodeError

Question

我已經編寫了一個簡單的Python代碼來讀取Excel文件中的數據，在另一個位置搜索相同的文件，並在正確的位置寫入另一個Excel文件循環。

但問題是，如果文件不存在的位置則是通過給下面的錯誤停止操作：

Traceback (most recent call last): 
    File "C:\Users\Public\Downloads\File_Search\search.py", line 61, in <module> 
    search(fname,url) 
    File "C:\Users\Public\Downloads\File_Search\search.py", line 26, in search 
    if fname in name:                                 

UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 25: ordinal not in  
    range(128) 
Exception Exception: Exception('Exception caught in workbook destructor. Explicit close() may be  
required for workbook.',) in <bound method Workbook.__del__ o 
<xlsxwriter.workbook.Workbook object at 0x025788D0>> ignored 

Answer 1

這裏是代碼：

import xlsxwriter 
from xlrd import open_workbook 
import os.path 
import shutil 

def search(fname,url):                   
    global rw 
    global cpy_file 
    counter=0 
    dest_folder="C:\\Users\\Public\\Downloads\\File_Search\\output" 
    for root, dirs, files in os.walk(url, topdown=False): 
     for name in files:  
      if fname in name:                 
       path= os.path.join(root, name) 
       cl=0 
       worksheet.write(rw,cl,name+":")             
       cl=1 
       worksheet.write_url(rw,cl,path)             
       rw=rw+1 
       counter=1 
       if cpy_file == "Y": 
        shutil.copy(path, dest_folder)            
       break 
     else: 
      continue 
     break 
    if counter == 0: 
     cl=0 
     worksheet.write(rw,cl,fname)              
     cl=1 
     worksheet.write(rw,cl,"Not Available")           
     rw=rw+1 

if __name__ == "__main__": 
    print "Please make sure you have prepared the excel list" 
    url= str(raw_input("Enter the Search Path: "))            
    cpy_file= str(raw_input("Do you want to copy the files, Y/N: "))        
    dest_folder="C:\\Users\\Public\\Downloads\\File_Search\\output"        
    wb = open_workbook('C:\\Users\\Public\\Downloads\\File_Search\\Input.xlsx')     
    sh = wb.sheet_by_index(0)                 
    rw=0                       
    workbook = xlsxwriter.Workbook('C:\\Users\\Public\\Downloads\\File_Search\\output.xlsx')  
    worksheet = workbook.add_worksheet()               
    print "Searching...Please Wait..." 
    for row in range(sh.nrows):                 
     fname= sh.cell(row,0).value                
     search(fname,url)                  
    print "Search Completed....." 
    print "Find the file path 'C:\\Users\\Public\\Downloads\\File_Search\\output.xlsx'" 
    if cpy_file == "Y": 
     print "Files copied to 'C:\\Users\\Public\\Downloads\\File_Search\\output'" 
    workbook.close()   

錯誤我得到如果搜索到的文件不存在於位置：

Traceback (most recent call last): 
    File "C:\Users\Public\Downloads\File_Search\search.py", line 61, in <module> 
    search(fname,url) 
    File "C:\Users\Public\Downloads\File_Search\search.py", line 26, in search 
    if fname in name:                                 

UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 25: ordinal not in  
    range(128) 
Exception Exception: Exception('Exception caught in workbook destructor. Explicit close() may be  
required for workbook.',) in <bound method Workbook.__del__ o 
<xlsxwriter.workbook.Workbook object at 0x025788D0>> ignored