'How to implement 'ThreadPoolExecutor' in Python?
Actually, I have scraped the 'Nykaa Website'. But Problem is that it's taking around 10 days, to fetch the complete data. Which is very time-consuming.
Basically, I want to optimize or automate this Code, so it takes the least time. Recently, I have learned about the concept of 'Threading' and 'ThreadPoolExecutor'. So, Threading will speed up our tasks, by running the requests concurrently.
Now, This is the Code, which I've tried to Implement 👇🏻
from scrapy.loader.processors import MapCompose
from scrapy import Spider
from scrapy import Request, FormRequest
from scrapy.selector import Selector
from w3lib.html import remove_tags
from scrapy.loader import ItemLoader
import json
import re
from scrapy.loader import ItemLoader
from couponsscraper.loaders import ListingLoader
import time
import concurrent.futures
class MySpider(Spider):
name = 'nykaa_comla'
custom_settings = {
# "PROXY_ON": True,
"HTTPCACHE_ENABLED": False,
"CONCURRENT_REQUESTS": 4,
"COOKIES_ENABLED": True,
"AUTOTHROTTLE_ENABLED": True,
"RETRY_TIMES": 5,
"DOWNLOAD_DELAY": 1,
"RETRY_HTTP_CODES": [500, 503, 504, 400, 401, 403, 405, 404, 408, 416, 456, 502, 429, 307]
}
headers = {
# "accept": "application/json, text/plain, */*",
# "accept-encoding": "gzip, deflate, br",
# "accept-language": "tr-TR,tr;q=0.9,en-US;q=0.8,en;q=0.7",
# "cookie": "bcookie=3a6db8c0-6226-4d67-9b3c-39ee6fb7002b; EXP_ADP_RV_REORDER=A; EXP_ADP_RV_SEGMENT=B; run=43; D_LST=1; D_PDP=1; _gcl_au=1.1.515177829.1644933995; _ga=GA1.2.1857014358.1644933996; _gid=GA1.2.1588295387.1644933996; d_info=1536_864; N_S_A_W=1; N_A_P=1; GPAY_INTENT=1; D_HOM=1; N_CMS=0; PHPSESSID=041dvmhr4r3nqj0mt051pid5q0; disableSmartLogin=true; SHOW_PREVIEW_INFO_PAGE=false; OLD_LISTING_FLOW=false; GC_PREVIEW_EXPERIMENT=true; NEW_PRE_CONFIRMATION=true; C_AUTH=false; NEW_PAYMENT_PAGE=false; VIEW_COUPON_EXPERIMENT=true; NEW_ORDERLISTING_PAGE=true; NEW_ORDERDETAIL_PAGE=false; AMCVS_FE9A65E655E6E38A7F000101%40AdobeOrg=1; s_cc=true; frontendSource=react; pro=false; head_data_react={}; form_key=FFGAZIZcYSy6guaw; s_nr=1644987663041-Repeat; countryCode=TR; storeId=nykaa; lux_uid=164502537781396625; AMCV_FE9A65E655E6E38A7F000101%40AdobeOrg=-432600572%7CMCIDTS%7C19039%7CMCMID%7C81426820227033618243066641334787189520%7CMCAAMLH-1645633715%7C6%7CMCAAMB-1645633715%7CRKhpRz8krg2tLO6pguXWp5olkAcUniQYPHaMWWgdJ3xzPWQmdj0y%7CMCOPTOUT-1645036115s%7CNONE%7CMCAID%7CNONE%7CvVersion%7C4.5.2; SITE_VISIT_COUNT=85; s_nr365=1645030255086-Repeat; cto_bundle=yZ-Tl19IZXRJdEFwYmJiRFlKdEUyRnMwdTJSYU8xanJLMjklMkJFZTdkSk1rZ2lobHFpRFU1RXRvNTFFOW5LM0x0NXE4RCUyQlk0eW5hZHklMkI1bjFIODFPeiUyQlljNXlUWnJSNTglMkJINU5LR1h6NlBVSWNROVNqNHZyazFBeVhiYzR0RSUyRmNiemQlMkYlMkJQMktDYlRiZ1pFbUVORlZoWERKbzFRJTNEJTNE; TS017d4a61=01317c4d00f4b4ecb9729e778b9c17dcf4ff9e0bde970f7d1b21ba9c6b22be6412bd39ff683b78cec4d5d72fa884218be5d8643776; TS5e83d05f027=08d3514ca6ab2000f82ea30abe3eacc9f428099d8668cb41a92cd2d81928f740933aee4731fd569b083d5530361130005c7a54f3c04dfcf2867d258ecec44f2412921fab91b839896e317f4c2953ff0d9fb3c2db28b8cfda2319bf9176d7af9f; s_sq=fsnecommerceprod%3D%2526c.%2526a.%2526activitymap.%2526page%253DNykaa%2526link%253DHair%252520Removal%252520Tools%2525202%2526region%253Dcustom-scroll%2526pageIDType%253D1%2526.activitymap%2526.a%2526.c%2526pid%253DNykaa%2526pidt%253D1%2526oid%253Dfunctioncn%252528%252529%25257B%25257D%2526oidt%253D2%2526ot%253DDIV",
# "referer": "https://www.nykaa.com/personal-care-appliances/c/1390?page_no=1&sort=popularity&eq=desktop&category_filter=1408,1412,1411,1543,6290,1405,1404,1517,41,43,44,1399,1400,1406",
"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.82 Safari/537.36",
}
def start_requests(self):
start_urls = [
{
"url": [
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=1408%2C1412%2C1411%2C1543%2C6290%2C1405%2C1404%2C1517%2C41%2C43%2C44%2C1399%2C1400%2C1406%2C1401&category_id=1390&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=8446%2C8452%2C8443%2C8444%2C8441%2C8445%2C8448%2C8397%2C8442%2C8394%2C8449%2C8453%2C8451%2C8395%2C8396%2C8398%2C8420%2C8426%2C8644%2C8421%2C8427%2C8423%2C14001%2C8422%2C8424%2C8436%2C8438%2C8437%2C8382%2C8383%2C8381%2C8380%2C8379%2C8400%2C8401%2C8392%2C8429%2C8430%2C8409%2C8410%2C8411%2C8432%2C8433%2C8434%2C8405%2C8407%2C8406%2C8403%2C8404&category_id=8377&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=242%2C240%2C2440%2C687%2C241%2C247%2C245%2C244%2C931%2C1995%2C228%2C235%2C237%2C233%2C234%2C231%2C236%2C239%2C6761%2C4140%2C232%2C229%2C220%2C249%2C263%2C254%2C250%2C251%2C253%2C5079%2C252%2C7008%2C267%2C268%2C4037%2C271%2C266%2C269%2C270%2C273%2C272%2C947%2C1513%2C1514%2C3819%2C3745%2C3749%2C3746%2C255%2C3277%2C257%2C256%2C260&category_id=12&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=2444%2C2048%2C361%2C362%2C364%2C363%2C2049%2C7007%2C316%2C319%2C2046%2C2040%2C320%2C2041%2C22630%2C317%2C1214%2C1222%2C2746%2C2045%2C2043%2C331%2C332%2C346%2C329%2C11111&category_id=24&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=13561%2C6790%2C1642%2C1645%2C326%2C13562%2C368%2C367%2C369%2C370%2C39%2C391%2C1654%2C9475%2C1647%2C690%2C1816%2C381%2C584%2C385%2C382%2C7466%2C371%2C377%2C374%2C1389%2C688%2C7010%2C396%2C1386%2C1640%2C663%2C1133%2C1660%2C662%2C290%2C7009%2C2086%2C14358&category_id=12930&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=9607%2C9606%2C9611%2C9608%2C9609%2C9613%2C9612%2C9610%2C9626%2C9627%2C9625%2C9624%2C9628%2C9631%2C9630%2C9632%2C9629%2C9582%2C9581%2C9567%2C9571%2C9584%2C9569%2C9566%2C9579%2C9576%2C9568%2C9634%2C9637%2C9636%2C9635&category_id=12930&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=14799%2C14801%2C14806%2C14805%2C14800%2C14803%2C14834%2C15013%2C15010%2C14802%2C14804%2C14807%2C14808%2C15009%2C14809%2C14828%2C14829%2C15357%2C15123%2C15124%2C14838%2C14839%2C14844%2C14840%2C14836%2C22633%2C14824%2C14820%2C14822%2C14819%2C14821%2C14823%2C15129%2C16966%2C16969%2C16964%2C16968%2C16970%2C15358%2C14846%2C14816%2C14813%2C14815%2C14814%2C14812%2C14817%2C14811%2C15126%2C15127%2C14848%2C14835%2C15125&category_id=14797&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=19868%2C19869%2C20421%2C19867%2C19864%2C1657%2C1656%2C1658%2C18549%2C18550%2C18547%2C19894%2C18548%2C18556%2C18555%2C18553%2C1620%2C18552%2C18554%2C2027%2C19878%2C19856%2C1614%2C19881%2C19876%2C19857%2C19875%2C1618%2C19879%2C19877%2C19870%2C18577%2C18575%2C18573%2C18698%2C18574%2C19872%2C18570%2C18697%2C18579%2C19871%2C18578%2C18569%2C18542%2C2020%2C18544%2C18543%2C18541%2C18551%2C18558%2C18561%2C18567%2C18559%2C18566%2C18560%2C18565%2C18564%2C18563%2C19859%2C19861%2C18562%2C19858%2C19860&category_id=671&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=1324%2C1323%2C328%2C1287%2C568%2C11028%2C1289%2C1548%2C1291%2C11029%2C1290%2C1288%2C11045%2C11216%2C11054%2C11047%2C11046%2C2803%2C11048%2C2801%2C2799%2C1294%2C1415%2C1297%2C1298%2C1293%2C1296%2C1295%2C1414%2C1413%2C1308%2C1307%2C7034%2C1316%2C1313%2C1314%2C1312%2C1311%2C1328%2C6543%2C1326%2C1329%2C1305%2C1303%2C1306%2C1304%2C1302%2C1301&category_id=9150&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity",
"https://www.nykaa.com/app-api/index.php/products/list?category_filter=974%2C979%2C1235%2C975%2C962%2C971%2C970%2C18521%2C3126%2C18313%2C18319%2C18311&category_id=53&client=react&filter_format=v2&page_no=1&platform=website&sort=popularity"
],
},
] # LEVEL 1
t1 = time.perf_counter()
def download_urls(start_urls):
for url in start_urls:
for item in url.get('url'):
yield Request(
url=item,
callback=self.jump, headers=self.headers
)
with concurrent.futures.ThreadPoolExecutor() as executor:
executor.map(download_urls, start_urls)
t2 = time.perf_counter()
print(f'Finished in {t2-t1} seconds')
def jump(self, response):
headers = {
# "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
# "cookie": "bcookie=3a6db8c0-6226-4d67-9b3c-39ee6fb7002b; EXP_ADP_RV_REORDER=A; EXP_ADP_RV_SEGMENT=B; run=43; D_LST=1; D_PDP=1; _gcl_au=1.1.515177829.1644933995; _ga=GA1.2.1857014358.1644933996; _gid=GA1.2.1588295387.1644933996; AMCVS_FE9A65E655E6E38A7F000101%40AdobeOrg=1; d_info=1536_864; s_cc=true; frontendSource=react; N_S_A_W=1; N_A_P=1; GPAY_INTENT=1; D_HOM=1; N_CMS=0; AMCV_FE9A65E655E6E38A7F000101%40AdobeOrg=-432600572%7CMCIDTS%7C19039%7CMCMID%7C81426820227033618243066641334787189520%7CMCAAMLH-1645555116%7C6%7CMCAAMB-1645555116%7CRKhpRz8krg2tLO6pguXWp5olkAcUniQYPHaMWWgdJ3xzPWQmdj0y%7CMCOPTOUT-1644957516s%7CNONE%7CMCAID%7CNONE%7CvVersion%7C4.5.2; countryCode=TR; storeId=nykaa; lux_uid=164495373425081540; SITE_VISIT_COUNT=42; s_nr365=1644954403255-Repeat; cto_bundle=FmfdrF9IZXRJdEFwYmJiRFlKdEUyRnMwdTJacUclMkZESTVtbFJoeSUyRm9DeWFuZnNyUHB1Wmp6Mjd5aSUyRnpoJTJGUW9adHBvJTJGaDklMkZVU2JqeTBmUnNQNWRZUkFlZFdkU01HOUtFN1FVM2NqQ2hyJTJCSWNCRHVqWXVIYmxGSmtYalY1ZWVlNzhuOEFFeiUyRmJkYW0lMkY1eExpWTIlMkI5UWFVTk9xUSUzRCUzRA; s_sq=fsnecommerceprod%3D%2526c.%2526a.%2526activitymap.%2526page%253DNykaa%2526link%253DCategory%2526region%253Dfirst-filter%2526pageIDType%253D1%2526.activitymap%2526.a%2526.c%2526pid%253DNykaa%2526pidt%253D1%2526oid%253Dfunctioncn%252528%252529%25257B%25257D%2526oidt%253D2%2526ot%253DDIV; TS017d4a61=01317c4d00801f0f349c15b870e54bb5b073295e5cd3300ec6151f9df175201cd7088a4fddc721927b22edfb27519afe45b7706946; TS5e83d05f027=08d3514ca6ab200050d2f52481b8d6300143ac438c162c3b9a85f08eef7a692b65d0a08e95fa92ca08337d71c4113000d7f4a8888b3d70b89797c2274d4e26fe457de218890038f0d09704e9c58b3c0655ad652c93a0e031aa4d0ee666767637",
# "upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.82 Safari/537.36"
}
page = response.meta.get('page', 2)
seen = False
data = json.loads(response.body)['response']['products']
for item in data:
try:
main = item['primary_categories']['l1']['name']
sub = item['primary_categories']['l2']['name']
child = item['primary_categories']['l3']['name']
follow_url = item['product_url']
yield Request(follow_url, callback=self.parse, meta={'main_cat': main, 'sub_cat': sub, 'child_cat': child}, headers=headers)
seen = True
except:
pass
if page == 2 or seen:
headersa = {
# "accept": "application/json, text/plain, */*",
# "accept-encoding": "gzip, deflate, br",
# "accept-language": "tr-TR,tr;q=0.9,en-US;q=0.8,en;q=0.7",
# "cookie": "bcookie=3a6db8c0-6226-4d67-9b3c-39ee6fb7002b; EXP_ADP_RV_REORDER=A; EXP_ADP_RV_SEGMENT=B; run=43; D_LST=1; D_PDP=1; _gcl_au=1.1.515177829.1644933995; _ga=GA1.2.1857014358.1644933996; _gid=GA1.2.1588295387.1644933996; d_info=1536_864; N_S_A_W=1; N_A_P=1; GPAY_INTENT=1; D_HOM=1; N_CMS=0; PHPSESSID=041dvmhr4r3nqj0mt051pid5q0; disableSmartLogin=true; SHOW_PREVIEW_INFO_PAGE=false; OLD_LISTING_FLOW=false; GC_PREVIEW_EXPERIMENT=true; NEW_PRE_CONFIRMATION=true; C_AUTH=false; NEW_PAYMENT_PAGE=false; VIEW_COUPON_EXPERIMENT=true; NEW_ORDERLISTING_PAGE=true; NEW_ORDERDETAIL_PAGE=false; AMCVS_FE9A65E655E6E38A7F000101%40AdobeOrg=1; s_cc=true; frontendSource=react; pro=false; head_data_react={}; form_key=FFGAZIZcYSy6guaw; s_nr=1644987663041-Repeat; countryCode=TR; storeId=nykaa; lux_uid=164502537781396625; AMCV_FE9A65E655E6E38A7F000101%40AdobeOrg=-432600572%7CMCIDTS%7C19039%7CMCMID%7C81426820227033618243066641334787189520%7CMCAAMLH-1645633715%7C6%7CMCAAMB-1645633715%7CRKhpRz8krg2tLO6pguXWp5olkAcUniQYPHaMWWgdJ3xzPWQmdj0y%7CMCOPTOUT-1645036115s%7CNONE%7CMCAID%7CNONE%7CvVersion%7C4.5.2; SITE_VISIT_COUNT=85; s_nr365=1645030255086-Repeat; cto_bundle=yZ-Tl19IZXRJdEFwYmJiRFlKdEUyRnMwdTJSYU8xanJLMjklMkJFZTdkSk1rZ2lobHFpRFU1RXRvNTFFOW5LM0x0NXE4RCUyQlk0eW5hZHklMkI1bjFIODFPeiUyQlljNXlUWnJSNTglMkJINU5LR1h6NlBVSWNROVNqNHZyazFBeVhiYzR0RSUyRmNiemQlMkYlMkJQMktDYlRiZ1pFbUVORlZoWERKbzFRJTNEJTNE; TS017d4a61=01317c4d00f4b4ecb9729e778b9c17dcf4ff9e0bde970f7d1b21ba9c6b22be6412bd39ff683b78cec4d5d72fa884218be5d8643776; TS5e83d05f027=08d3514ca6ab2000f82ea30abe3eacc9f428099d8668cb41a92cd2d81928f740933aee4731fd569b083d5530361130005c7a54f3c04dfcf2867d258ecec44f2412921fab91b839896e317f4c2953ff0d9fb3c2db28b8cfda2319bf9176d7af9f; s_sq=fsnecommerceprod%3D%2526c.%2526a.%2526activitymap.%2526page%253DNykaa%2526link%253DHair%252520Removal%252520Tools%2525202%2526region%253Dcustom-scroll%2526pageIDType%253D1%2526.activitymap%2526.a%2526.c%2526pid%253DNykaa%2526pidt%253D1%2526oid%253Dfunctioncn%252528%252529%25257B%25257D%2526oidt%253D2%2526ot%253DDIV",
"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.82 Safari/537.36",
}
f_url = response.url.replace(
f"page_no={page-1}", f"page_no={page}")
print(f_url)
print("*****************************************************")
if f_url:
yield Request(f_url, callback=self.jump, meta={"page": page+1}, headers=headersa)
# 1. FOLLOWING
def parse(self, response):
item_loader = ListingLoader(response=response)
external_link = response.url
item_loader.add_value("external_link", response.url)
main_cat = str(response.meta.get('main_cat'))
sub_cat = str(response.meta.get('sub_cat'))
child_cat = str(response.meta.get('child_cat'))
title = response.xpath(
"//script[contains(.,'window.__PRELOADED_STATE__ =')]/text()").get()
if title:
title = json.loads(title.split(
"window.__PRELOADED_STATE__ = ")[-1])['productPage']['product']['name']
if title:
item_loader.add_value("title", title)
price = response.xpath("//span[@class='css-12x6n3h']/text()").get()
if price:
price = price.split("₹")[-1]
item_loader.add_value("price", price.split("₹")[-1])
country = response.xpath(
"//script[contains(.,'originOfCountryName')]/text()").get()
if country:
country = country.split("originOfCountryName")[1].split(
",")[0].replace('"', "").split(":")[-1].replace("\n", "").strip()
item_loader.add_value('country', country)
description = response.xpath(
"//script[contains(.,'window.__PRELOADED_STATE__ =')]/text()").get()
if description:
description = json.loads(description.split(
"window.__PRELOADED_STATE__ = ")[-1])['productPage']['product']['description']
sel = Selector(text=description, type='html')
if description:
description = "".join(sel.xpath(".//p//text()").getall())
item_loader.add_value("description", description)
else:
return []
date = response.xpath(
"//script[contains(.,'window.__PRELOADED_STATE__ =')]/text()").get()
if date:
date = json.loads(date.split(
"window.__PRELOADED_STATE__ = ")[-1])['productPage']['product']['expiry']
if date:
item_loader.add_value('date', date)
else:
return []
address = response.xpath(
"//script[contains(.,'window.__PRELOADED_STATE__ =')]/text()").get()
if address:
address = json.loads(address.split(
"window.__PRELOADED_STATE__ = ")[-1])['productPage']['product']['manufacturerAddress']
if address:
address = address.split(
"manufacturerAddress")[-1].split("}")[0].replace('"', "").split(":")[-1]
item_loader.add_value(
'address', address.replace("\n", "").strip())
importer = response.xpath(
"//script[contains(.,'window.__PRELOADED_STATE__ =')]/text()").get()
if importer:
importer = json.loads(importer.split(
"window.__PRELOADED_STATE__ = ")[-1])['productPage']['product']['manufacturerName']
if importer:
importer = importer.split(
"manufacturerAddress")[-1].split("}")[0].replace('"', "").split(":")[-1]
item_loader.add_value(
'importer', importer.replace("\n", "").strip())
yield{
'address': address,
'title': title,
'description': description,
'date': date,
'importer': importer,
'country': country,
'main_cat': main_cat,
'sub_cat': sub_cat,
'child_cat': child_cat,
# 'external_link':external_link
}
Now, This is the Output I'am receiving 👇🏻
Finished in 0.001997700019273907 seconds
Unhandled error in Deferred:
2022-03-01 13:35:36 [twisted] CRITICAL: Unhandled error in Deferred:
Traceback (most recent call last):
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\scrapy\crawler.py", line 192, in crawl
return self._crawl(crawler, *args, **kwargs)
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\scrapy\crawler.py", line 196, in _crawl
d = crawler.crawl(*args, **kwargs)
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\twisted\internet\defer.py", line 1905, in unwindGenerator
return _cancellableInlineCallbacks(gen)
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\twisted\internet\defer.py", line 1815, in _cancellableInlineCallbacks
_inlineCallbacks(None, gen, status)
--- <exception caught here> ---
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\twisted\internet\defer.py", line 1660, in _inlineCallbacks
result = current_context.run(gen.send, result)
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\scrapy\crawler.py", line 88, in crawl
start_requests = iter(self.spider.start_requests())
builtins.TypeError: 'NoneType' object is not iterable
2022-03-01 13:35:36 [twisted] CRITICAL:
Traceback (most recent call last):
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\twisted\internet\defer.py", line 1660, in _inlineCallbacks
result = current_context.run(gen.send, result)
File "C:\Users\paart\AppData\Roaming\Python\Python310\site-packages\scrapy\crawler.py", line 88, in crawl
start_requests = iter(self.spider.start_requests())
TypeError: 'NoneType' object is not iterable
PS E:\Web Scraping - Nykaa (New_two)\couponsscraper\couponsscraper>
Please, anyone, help me with this, where I'm going wrong, and if we not use 'threading' should we use 'snakeviz'. Thanks 🙏🏻
Sources
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Source: Stack Overflow
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