本文实例讲述了python实现搜索指定目录下文件及文件内搜索指定关键词的方法。分享给大家供大家参考。具体实现方法如下：

#!/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, fnmatchclass 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 printif __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)

希望本文所述对大家的Python程序设计有所帮助。