在文件夹中查找文件名并匹配到Excel表

Question

我需要从给定文件夹和子文件夹中提取文件名（图号）。然后，我需要对照包含图纸编号列表和相应图纸描述的Excel文件，交叉查找所找到的图形编号列表。输出需要是包含两列的Excel表格，用于图号和图形说明。在20个文件夹和子文件夹中有大约500个图纸需要遍历。

Answer 1

walk from os模块可能会很有帮助，因为csv模块可以让excel读取文件。没有更多的细节，我只能给你一个粗略的骨架。在下文中，root是包含所有你想要搜索的目录的顶级目录：

import os 
import csv 

#The below is sample code for reading your existing csv files. 
#It will vary based on their exact specifications 

with open('myfile.csv', newline='') as f: 
    reader = csv.reader(f) 
    d = {line[0]: line[1] for line in reader} 

#Next is code for opening the output file, 
#then going through all the filenames in our directory 
#For each filename, we look it up in the dictionary from earlier 
# then write that pair to the output file 

with open('output.csv', 'w+', newline='') as out: 
    writer = csv.writer(out) 
    for dirpath, dirnames, filenames in os.walk('root'): 
     for filename in filenames: 
      writer.writerow([filename, d[filename]) 

我建议你查查csv和Python官方文档os.walk