如何用Python实现在文件夹下查找一个关键词

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如何用Python实现在文件夹下查找一个关键词,第1张

#!/usr/bin/python

#coding:utf8

import os

#判断文件中是否包含关键字，是则将文件路径打印出来

def is_file_contain_word(file_list, query_word):

for _file in file_list:

if query_word in open(_file).read():

print _file

print("Finish searching.")

#返回指定目录的所有文件（包含子目录的文件）

def get_all_file(floder_path):

file_list = []

if floder_path is None:

raise Exception("floder_path is None")

for dirpath, dirnames, filenames in os.walk(floder_path):

for name in filenames:

file_list.append(dirpath + '\\' + name)

return file_list

query_word = raw_input("Please input the key word that you want to search:")

basedir = raw_input("Please input the directory:")

is_file_contain_word(get_all_file(basedir), query_word)

raw_input("Press Enter to quit.")

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学习日志：Python 实现网络爬虫——提取关键字 原创

2022-06-19 13:02:38

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编写一段Python代码，向百度提交查询关键词“桃花源记”，抓取百度的查询结果，要求有文字、链接，可以在浏览器中打开抓取的链接，或者调用浏览器打开抓取的链接。

红框内是根据网站信息需要更改的内容。57031baa3a394395be479ad89f1ff15e.png

附上完整代码：

import json

import requests

from lxml import etree

headers = {

"User-Agent":"Mozilla/5.0 (Windows NT 10.0WOW64) AppleWebKit/537.36 (KHTML, like Gecko) "

"Chrome/88.0.4324.104 Safari/537.36"

}

response = requests.get('https://www.baidu.com/s?wd=桃花源记&lm=0', headers=headers)

r = response.text

html = etree.HTML(r, etree.HTMLParser())

r1 = html.xpath('//h3')

r2 = html.xpath('//*[@class="content-right_8Zs40"]')

r3 = html.xpath('//*[@class="c-row source_1Vdff OP_LOG_LINK c-gap-top-xsmall"]/a/@href')

for i in range(4):

r11 = r1[i].xpath('string(.)')

r22 = r2[i].xpath('string(.)')

r33 = r3[i]

with open('桃花源记.txt', 'a', encoding='utf-8') as c:

c.write(json.dumps(r11,ensure_ascii=False) + '\n')

c.write(json.dumps(r22, ensure_ascii=False) + '\n')

c.write(json.dumps(r33, ensure_ascii=False) + '\n')

print(r11, end='\n')

print('------------------------')

print(r22, end='\n')

print(r33)