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_Python

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

2020-07-17 10:56不吃皮蛋 Python

这篇文章主要介绍了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,可实现针对文件夹及文件内关键词的搜索功能,需要的朋友可以参考下

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：

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									#!/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)