python爬蟲實戰之爬取任意百度圖片(升級版)
阿新 • • 發佈:2021-02-09
python爬蟲實戰之爬取任意百度圖片(升級版)
import re
import requests
from urllib import error
from bs4 import BeautifulSoup
import os
num = 0
numPicture = 0
file = ''
List = []
def Find(url, A):
global List
print('正在檢測圖片總數,請稍等.....')
t = 0
i = 1
s = 0
while t < 1000:
Url = url + str(t)
try:
Result = A.get(Url, timeout=7, allow_redirects=False)
except BaseException:
t = t + 60
continue
else:
result = Result.text
pic_url = re.findall('"objURL":"(.*?)",' , result, re.S) # 先利用正則表示式找到圖片url
s += len(pic_url)
if len(pic_url) == 0:
break
else:
List.append(pic_url)
t = t + 60
return s
def recommend(url):
Re = []
try:
html = requests.get(url, allow_redirects= False)
except error.HTTPError as e:
return
else:
html.encoding = 'utf-8'
bsObj = BeautifulSoup(html.text, 'html.parser')
div = bsObj.find('div', id='topRS')
if div is not None:
listA = div.findAll('a')
for i in listA:
if i is not None:
Re.append(i.get_text())
return Re
def dowmloadPicture(html, keyword):
global num
# t =0
pic_url = re.findall('"objURL":"(.*?)",', html, re.S) # 先利用正則表示式找到圖片url
print('找到關鍵詞:' + keyword + '的圖片,即將開始下載圖片...')
for each in pic_url:
print('正在下載第' + str(num + 1) + '張圖片,圖片地址:' + str(each))
try:
if each is not None:
pic = requests.get(each, timeout=7)
else:
continue
except BaseException:
print('錯誤,當前圖片無法下載')
continue
else:
string = file + r'\\' + keyword + '_' + str(num) + '.jpg'
fp = open(string, 'wb')
fp.write(pic.content)
fp.close()
num += 1
if num >= numPicture:
return
if __name__ == '__main__': # 主函式入口
headers = {
'Accept-Language': 'zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2',
'Connection': 'keep-alive',
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0',
'Upgrade-Insecure-Requests': '1'
}
A = requests.Session()
A.headers = headers
###############################
tm = int(input('請輸入每類圖片的下載數量 '))
numPicture = tm
line_list = []
print("請輸入你要輸入幾個關鍵詞:")
i=int(input(""))
for j in range(i):
t=input("")
line_list.append(t)
for word in line_list:
url = 'https://image.baidu.com/search/flip?tn=baiduimage&ie=utf-8&word=' + word + '&pn='
tot = Find(url,A)
Recommend = recommend(url) # 記錄相關推薦
print('經過檢測%s類圖片共有%d張' % (word, tot))
file = word + '檔案'
y = os.path.exists(file)
if y == 1:
print('該檔案已存在,請重新輸入')
file = word+'資料夾2'
os.mkdir(file)
else:
os.mkdir(file)
t = 0
tmp = url
while t < numPicture:
try:
url = tmp + str(t)
#result = requests.get(url, timeout=10)
# 這裡搞了下
result = A.get(url, timeout=10, allow_redirects=False)
print(url)
except error.HTTPError as e:
print('網路錯誤,請調整網路後重試')
t = t + 60
else:
dowmloadPicture(result.text, word)
t = t + 60
numPicture = numPicture + tm
print('當前搜尋結束,感謝使用')
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