python實現搜索指定目錄下文件及文件內搜索指定關鍵詞的方法

　　本文實例講述了python實現搜索指定目錄下文件及文件內搜索指定關鍵詞的方法。分享給大家供大家參考。具體實現方法如下：

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 #!/usr/bin/python -O # -*- coding: UTF-8 -*- """ Sucht rekursiv in Dateiinhalten und listet die Fundstellen auf. """ __author__ = "Jens Diemer" __license__ = """GNU General Public License v2 or above - http://www.opensource.org/licenses/gpl-license.php""" __url__ = "http://www.jensdiemer.de" __version__ = "0.1" import os, time, fnmatch class search: def __init__(self, path, search_string, file_filter): self.search_path = path self.search_string = search_string self.file_filter = file_filter print "Search '%s' in [%s]..." % ( self.search_string, self.search_path ) print "_" * 80 time_begin = time.time() file_count = self.walk() print "_" * 80 print "%s files searched in %0.2fsec." % ( file_count, (time.time() - time_begin) ) def walk(self): file_count = 0 for root, dirlist, filelist in os.walk(self.search_path, followlinks=True): for filename in filelist: for file_filter in self.file_filter: if fnmatch.fnmatch(filename, file_filter): self.search_file(os.path.join(root, filename)) file_count += 1 return file_count def search_file(self, filepath): f = file(filepath, "r") content = f.read() f.close() if self.search_string in content: print filepath self.cutout_content(content) def cutout_content(self, content): current_pos = 0 search_string_len = len(self.search_string) for i in xrange(max_cutouts): try: pos = content.index(self.search_string, current_pos) except ValueError: break content_window = content[ pos - content_extract : pos + content_extract ] print ">>>", content_window.encode("String_Escape") current_pos += pos + search_string_len print if __name__ == "__main__": search_path = r"c:texte" file_filter = ("*.py",) # fnmatch-Filter search_string = "history" content_extract = 35 # Gr��e des Ausschnittes der angezeigt wird max_cutouts = 20 # Max. Anzahl an Treffer, die Angezeigt werden sollen search(search_path, search_string, file_filter)

 

　　希望本文所述對大家的Python程序設計有所幫助。