python之爬虫篇

1，POST请求

# -*- coding: UTF-8 -*-

import requests

formdata = {
    "type": "AUTO",
    "i": "i love python",
    "doctype": "json",
    "xmlVersion": "1.8",
    "keyfrom": "fanyi.web",
    "ue": "UTF-8",
    "action": "FY_BY_ENTER",
    "typoResult": "true"
}

url = "http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=null"

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36"}

response = requests.post(url, data=formdata, headers=headers)

print response.text

2，下载图片

# -*- coding: UTF-8 -*-
import requests
import re
import random
import string

def write_file(file, content):
    with open(file, "wb") as f:
        f.write(content)
        print "done"

def down_picture(file, url, headers):
    response = requests.get(url, headers)
    if response.status_code == 200:
        write_file(file, response.content)



def for_get_picture(url):
    headers = {}
    response = requests.get(url, headers = headers)
    print "code: %d " % (response.status_code)
    patterm = re.compile("src=(.*.jpg)")
    if response.status_code == 200:
        content = response.content
        list = patterm.findall(content)
        str1 = str(list)
        image_list = str1.split(""")
        for i in image_list:
            if i.endswith("jpg"):
                jpg_url = "https://pic.netbian.com" + i
                print jpg_url
                radom = ''.join(random.sample(string.ascii_letters + string.digits, 8))
                #print salt
                file = "D:pythondownload" + radom + ".jpg"
                print file
                down_picture(file, jpg_url, "")
                #write_file("D:pythondownload1.jpg", response.content)
url = "https://pic.netbian.com/4kmeinv/index_3.html"

for i in range(4,175,1):
    url1 = "https://pic.netbian.com/4kmeinv/index_%s.html" % (i)
    #print url1
    for_get_picture(url1)

3，下载视频

# -*- coding: UTF-8 -*-
import requests
#url = "https://www.fa67e7417bdc.com/shipin/play-143013.html"
url1 = "https://s1.cdn-c55291f64e9b0e3a.com/common/duanshipin/2021-05-11/dsp_7814d78ed1b2cafda14e85dd81488872_wm/dsp_7814d78ed1b2cafda14e85dd81488872_wm.mp4"

#res = requests.get(url1)
#print res.content

hd = {
"Origin": "https://www.fa67e7417bdc.com",
"Referer": "https://www.fa67e7417bdc.com/shipin/play-143014.html",
"User-Agent": "Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Mobile Safari/537.36"
}

print("开始下载")
url = 'https://myjkgl.net/common/duanshipin/2021-05-11/dsp_ad0acdb7273fef972bcc14b3d81edac2_wm/enc_dsp_ad0acdb7273fef972bcc14b3d81edac2_wm4.ts'
r = requests.get(url, headers=hd, stream=True)

with open('test.mp4', "wb") as mp4:
    for chunk in r.iter_content(chunk_size=1024 * 1024):
        if chunk:
            mp4.write(chunk)

4，request请求

# -*- coding: UTF-8 -*-
import requests
from requests.packages.urllib3.exceptions import InsecureRequestWarning


requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
url = "https://www.cnblogs.com/ljfight/p/9577783.html"
header = {
    "test": "123",
    "test1": "124"
}
parameters = {
    "test": "124"
}
#response = requests.get(url, params = parameters, headers = header)
response = requests.get(url, verify = False)
print response.content
print response.status_code