# -*- coding: utf-8 -*-
import requests
url = 'https://www.baidu.com' # 注释1
headers = {
# 注释2
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) \
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36'
}
response = requests.get(url=url, headers=headers) # 注释3
content = response.content.decode() # 注释4
print(content) # 注释5
翻译爬虫：
from urllib import request, parse
import json
if __name__ == '__main__':
baseurl = "https://fanyi.baidu.com/sug"
word = input("请输入您想输入的单词:")
# 我们需要传送过去的数据
datas = {
'kw': word
}
# 对数据进行编码
data = parse.urlencode(datas).encode()
# 写ｈｔｔｐ头部，至少需要Content-Length
headers = {
# 此处为编码后的长度
'Content-Length': len(data),
}
# 将数据传送
req = request.Request(url=baseurl, data=data, headers=headers)
res = request.urlopen(req)
json_data = res.read()
json_data = json_data.decode()
json_data = json.loads(json_data)
# data里面是一个list
data_list = json_data.get('data')
for item in data_list:
print(item['k'], '---', item['v'])
小说爬虫：
# -*- coding:UTF-8 -*-
from bs4 import BeautifulSoup
import requests, sys
"""
类说明:下载《笔趣看》网小说《一念永恒》
Parameters:
无
Returns:
无
Modify:
2017-09-13
"""
class downloader(object):
def __init__(self):
self.server = 'https://www.biqukan.com/'
self.target = 'https://www.biqukan.com/1_1094/'
self.names = [] #存放章节名
self.urls = [] #存放章节链接
self.nums = 0 #章节数
"""
函数说明:获取下载链接
Parameters:
无
Returns:
无
Modify:
2017-09-13
"""
def get_download_url(self):
req = requests.get(url = self.target)
html = req.text
div_bf = BeautifulSoup(html)
div = div_bf.find_all('div', class_ = 'listmain')
a_bf = BeautifulSoup(str(div[0]))
a = a_bf.find_all('a')
self.nums = len(a[15:]) #剔除不必要的章节，并统计章节数
for each in a[15:]:
self.names.append(each.string)
self.urls.append(self.server + each.get('href'))
"""
函数说明:获取章节内容
Parameters:
target - 下载连接(string)
Returns:
texts - 章节内容(string)
Modify:
2017-09-13
"""
def get_contents(self, target):
req = requests.get(url = target)
html = req.text
bf = BeautifulSoup(html)
texts = bf.find_all('div', class_ = 'showtxt')
texts = texts[0].text.replace('\xa0'*8,'\n\n')
return texts
"""
函数说明:将爬取的文章内容写入文件
Parameters:
name - 章节名称(string)
path - 当前路径下,小说保存名称(string)
text - 章节内容(string)
Returns:
无
Modify:
2017-09-13
"""
def writer(self, name, path, text):
write_flag = True
with open(path, 'a', encoding='utf-8') as f:
f.write(name + '\n')
f.writelines(text)
f.write('\n\n')
if __name__ == "__main__":
dl = downloader()
dl.get_download_url()
print('《一年永恒》开始下载：')
for i in range(dl.nums):
dl.writer(dl.names[i], '一念永恒.txt', dl.get_contents(dl.urls[i]))
sys.stdout.write(" 已下载:%.3f%%" % float(i/dl.nums) + '\r')
sys.stdout.flush()
print('《一年永恒》下载完成')
