在文件夹和子文件夹python中搜索多个文件

Question

尝试在当前文件夹和子文件夹的多个文件中搜索一个搜索词并将它们打印到一个文件中。

我可以使用 os.walk 打印出终端中的文件。但我想在文件夹中的所有文件中搜索特定单词

    import glob, os
    
   output_file = 'Funkar.txt'
search_str = '"Prefix"'

for root, dirs, files in os.walk("."):
    for file in files:
        if file.endswith(".wpp"):
             print(os.path.join(root, file))

        with  open(os.path.join(root, file), 'r') as fr, open (output_file,'a',  encoding='utf-8') as fw:
            for i,line in enumerate(fr):
                if line.find(search_str) != -1: 
                    fw.write(line)

现在给我

in decode
    return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 12: character maps to <undefined>

Answer 1

搜索和打印：

import os
def search( folder, word ):
    for root, dirs, files in os.walk(folder):
        path = root.split(os.sep)
        for filename in files:
            fullname = os.path.join(root, filename)
            if open( fullname ).read().find( word ) != -1:
                print( fullname ) 

search( "FolderName", 'any text')

搜索和备份搜索到的行：

import os
def search( folder, word, bfile ):
    for root, dirs, files in os.walk(folder):
        path = root.split(os.sep)
        for filename in files:
            fullname = os.path.join(root, filename)
            if open( fullname ).read().find( word ) != -1:
                print( fullname ) 
                blines = [x for x in open(fullname).readlines() if x.find(word) != -1]
                open( bfile, 'a' ).writelines(blines) 

search( "FolderName", 'any text', 'backup-lines.file')