[英]issue scraping data using beautifulsoup
我試圖從 yelp 中抓取數據,特別是納什維爾餐館的名稱、地址、價格和評級。 我正在使用beautifulsoup。 我有兩個循環來收集數據。 第二個循環正在工作,但第一個循環僅適用於少數幾個。 我認為這與課程有關。 我已經嘗試了我能想到的所有課程組合,但我仍然無法讓它發揮作用。
這是我從https://www.yelp.com/search?find_desc=Restaurants&find_loc=Nashville%2C+TN抓取的地方
當我打印每個列表時,這些是這些結果(如果找不到任何東西,它會添加“無”):第一行是公司名稱,第二行:評級,第三行:價格,第四行:地址
我注意到數據是由 javascript 提取的所以我使用了這個返回 json 的調用來獲取數據。
它更快更干凈。
import requests , os , csv
from urllib.parse import urljoin
def SaveAsCsv(list_of_rows):
try:
with open('data.csv', mode='a', newline='', encoding='utf-8') as outfile:
csv.writer(outfile).writerow(list_of_rows)
except PermissionError:
print("Please make sure data.csv is closed\n")
def Search():
payload = {
'find_desc': 'Restaurants',
'find_loc': 'Nashville, TN',
'start': 30, #if you want second page set start to 60 and so on
'parent_request_id': 'f3d6966567be99d1',
'request_origin': 'user'}
res = requests.get(url, params=payload)
if res.status_code == 200:
return res.json()
def Extract():
try:
JsonObj = Search()
Data = JsonObj['searchPageProps']['searchResultsProps']['searchResults']
if Data is not None:
for index , item in enumerate(Data,1):
print('getting item {} out of {}'.format(index,len(Data)))
if item.get('searchResultBusiness','') :
name = item['searchResultBusiness']['name']
rating = item['searchResultBusiness']['rating']
price = item['searchResultBusiness']['priceRange']
rank = item['searchResultBusiness']['ranking']
review = item['searchResultBusiness']['reviewCount']
phone = item['searchResultBusiness']['phone']
busUrl = urljoin(url ,item['searchResultBusiness']['businessUrl'])
SaveAsCsv([name,rating,price,rank,review,phone,busUrl])
except Exception as e:
print(e)
url = 'https://www.yelp.com/search/snippet'
if os.path.isfile('data.csv') and os.access('data.csv', os.R_OK):
print("File data.csv Already exists \n")
else:
SaveAsCsv([ 'name','rating','priceRange','ranking','reviewCount','phone','businessUrl'])
Extract()
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