英文:
Scrapy not giving output but works in shell
问题
这是我的 Scrapy 代码块:
import scrapy
class MedspiderSpider(scrapy.Spider):
name = "medspider"
allowed_domains = ["www.1mg.com"]
start_urls = ["https://www.1mg.com/drugs-all-medicines"]
def parse(self, response):
meds = response.css('div.style__flex-1___A_qoj')
for med in meds:
yield{
'name' : med.css('div div::text').get(),
'price' : med.css('div:has(> span)::text').getall()[-1],
'strip content' : med.css('div::text').getall()[-4],
'manufacturer' : med.css('div::text').getall()[-3]
}
在运行时使用 scrapy crawl medspider
,它会给出以下输出:
2023-05-28 11:44:22 [scrapy.utils.log] INFO: Scrapy 2.9.0 started (bot: tata1mg)
...(中间省略)
2023-05-28 11:44:23 [scrapy.extensions.telnet] INFO: Telnet Password: 74ffa37a1d23bc25
...(中间省略)
2023-05-28 11:44:23 [scrapy.core.engine] INFO: Spider opened
2023-05-28 11:44:23 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2023-05-28 11:44:23 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2023-05-28 11:44:23 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.1mg.com/robots.txt> (referer: None)
2023-05-28 11:44:23 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.1mg.com/drugs-all-medicines> (referer: None)
2023-05-28 11:44:23 [scrapy.core.engine] INFO: Closing spider (finished)
...(中间省略)
2023-05-28 11:44:23 [scrapy.core.engine] INFO: Spider closed (finished)
但在 shell 中运行代码时,它会给出以下输出:
In [21]: med.css('div div div ::text').get()
Out[21]: 'Augmentin 625 Duo Tablet'
In [25]: med.css('div::text').getall()[-4]
Out[25]: 'strip of 10 tablets'
In [26]: med.css('div::text').getall()[-3]
Out[26]: 'Glaxo SmithKline Pharmaceuticals Ltd'
英文:
So i'm new to web scraping and i've been trying to scrape this website but the problem i'm encountering is that when i run my code in shell it runs but it doesn't when i run it as a whole scrapy code.
Here is my Scrapy code block:
import scrapy
class MedspiderSpider(scrapy.Spider):
name = "medspider"
allowed_domains = ["www.1mg.com"]
start_urls = ["https://www.1mg.com/drugs-all-medicines"]
def parse(self, response):
meds = response.css('div.style__flex-1___A_qoj')
for med in meds:
yield{
'name' : med.css('div div::text').get(),
'price' : med.css('div:has(> span)::text').getall()[-1],
'strip content' : med.css('div::text').getall()[-4],
'manufacturer' : med.css('div::text').getall()[-3]
}
Running this code using scrapy crawl medspider
it gives the following output:-
2023-05-28 11:44:22 [scrapy.utils.log] INFO: Scrapy 2.9.0 started (bot: tata1mg)
2023-05-28 11:44:22 [scrapy.utils.log] INFO: Versions: lxml 4.9.2.0, libxml2 2.9.12, cssselect 1.2.0, parsel 1.8.1, w3lib 2.1.1, Twisted 22.10.0, Python 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)], pyOpenSSL 23.1.1 (OpenSSL 3.1.0 14 Mar 2023), cryptography 40.0.2, Platform Windows-10-10.0.22624-SP0
2023-05-28 11:44:22 [scrapy.crawler] INFO: Overridden settings:
{'BOT_NAME': 'tata1mg',
'FEED_EXPORT_ENCODING': 'utf-8',
'NEWSPIDER_MODULE': 'tata1mg.spiders',
'REQUEST_FINGERPRINTER_IMPLEMENTATION': '2.7',
'ROBOTSTXT_OBEY': True,
'SPIDER_MODULES': ['tata1mg.spiders'],
'TWISTED_REACTOR': 'twisted.internet.asyncioreactor.AsyncioSelectorReactor'}
2023-05-28 11:44:22 [asyncio] DEBUG: Using selector: SelectSelector
2023-05-28 11:44:22 [scrapy.utils.log] DEBUG: Using reactor: twisted.internet.asyncioreactor.AsyncioSelectorReactor
2023-05-28 11:44:22 [scrapy.utils.log] DEBUG: Using asyncio event loop: asyncio.windows_events._WindowsSelectorEventLoop
2023-05-28 11:44:22 [scrapy.extensions.telnet] INFO: Telnet Password: 74ffa37a1d23bc25
2023-05-28 11:44:22 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
'scrapy.extensions.telnet.TelnetConsole',
'scrapy.extensions.logstats.LogStats']
2023-05-28 11:44:22 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware',
'scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
'scrapy.downloadermiddlewares.retry.RetryMiddleware',
'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
'scrapy.downloadermiddlewares.stats.DownloaderStats']
2023-05-28 11:44:22 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
'scrapy.spidermiddlewares.referer.RefererMiddleware',
'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
'scrapy.spidermiddlewares.depth.DepthMiddleware']
2023-05-28 11:44:22 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2023-05-28 11:44:22 [scrapy.core.engine] INFO: Spider opened
2023-05-28 11:44:23 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2023-05-28 11:44:23 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2023-05-28 11:44:23 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.1mg.com/robots.txt> (referer: None)
2023-05-28 11:44:23 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.1mg.com/drugs-all-medicines> (referer: None)
2023-05-28 11:44:23 [scrapy.core.engine] INFO: Closing spider (finished)
2023-05-28 11:44:23 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 896,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader/response_bytes': 48250,
'downloader/response_count': 2,
'downloader/response_status_count/200': 2,
'elapsed_time_seconds': 0.670526,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2023, 5, 28, 6, 14, 23, 763883),
'httpcompression/response_bytes': 264903,
'httpcompression/response_count': 2,
'log_count/DEBUG': 5,
'log_count/INFO': 10,
'response_received_count': 2,
'robotstxt/request_count': 1,
'robotstxt/response_count': 1,
'robotstxt/response_status_count/200': 1,
'scheduler/dequeued': 1,
'scheduler/dequeued/memory': 1,
'scheduler/enqueued': 1,
'scheduler/enqueued/memory': 1,
'start_time': datetime.datetime(2023, 5, 28, 6, 14, 23, 93357)}
2023-05-28 11:44:23 [scrapy.core.engine] INFO: Spider closed (finished)
But when i run the code in shell it gives the output like:-
In [21]: med.css('div div div ::text').get()
Out[21]: 'Augmentin 625 Duo Tablet'
In [25]: med.css('div::text').getall()[-4]
Out[25]: 'strip of 10 tablets'
In [26]: med.css('div::text').getall()[-3]
Out[26]: 'Glaxo SmithKline Pharmaceuticals Ltd'
答案1
得分: 1
在你的settings.py文件中,或者在你的爬虫模块中使用custom_settings
属性,分配一个自定义的USER_AGENT
值。
例如:
settings.py
USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36"
或者在你的爬虫模块中:
...
class MedspiderSpider(scrapy.Spider):
name = "medspider"
allowed_domains = ["www.1mg.com"]
start_urls = ["https://www.1mg.com/drugs-all-medicines"]
custom_settings = {
"USER_AGENT": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36"
}
...
然后尝试再次运行 scrapy crawl ...
。
英文:
Either in your settings.py file, or using your spiders custom_settings
attribute, assign a custom USER_AGENT
value.
For example:
settings.py
USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36"
or in your spider module:
...
class MedspiderSpider(scrapy.Spider):
name = "medspider"
allowed_domains = ["www.1mg.com"]
start_urls = ["https://www.1mg.com/drugs-all-medicines"]
custom_settings = {
"USER_AGENT": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36"
}
...
And then try running scrapy crawl ...
again
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