scrapy - parsing items that are paginated
I have a url of the form: example.com/foo/bar/page_1.html There are a total of 53 pages, each one of them has ~20 rows. I basically want to get all the rows from all the pages, i.e. ~53*20 items. I have working code in my parse method, that parses a single page, and also goes one page deeper per item, to get more info about the item: def parse(self, response): hxs = HtmlXPathSelector(response) res
mypy で Iterable[Optional[type]] から Iterable[type] を導出したい
地道な方法 地道に下の通り書くと型チェックを通りました。 def remove_none_iterator(it: Iterator[Optional[int]]) -> Iterator[int]: while True: try: elem = next(it) while elem is None: elem = next(it) yield elem except StopIteration: return def remove_none(iterable: Iterable[Optional[int]]) -> Iterable[int]: it = iter(iterable) return remove_none_iterator(it) ただしこれだと返り値が必ずイテレーターになってしまいます。しかしそもそも filter() 関数は iterable を受け取ってイテレー
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Change IP address dynamically?
An approach using Scrapy will make use of two components, RandomProxy and RotateUserAgentMiddleware. Modify DOWNLOADER_MIDDLEWARES as follows. You will have to insert the new components in the settings.py: DOWNLOADER_MIDDLEWARES = { 'scrapy.contrib.downloadermiddleware.retry.RetryMiddleware': 90, 'tutorial.randomproxy.RandomProxy': 100, 'scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddl
How to check for NaN values
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Send Post Request in Scrapy
I am trying to crawl the latest reviews from google play store and to get that I need to make a post request. With the Postman, it works and I get desired response. but a post request in terminal gives me a server error For ex: this page https://play.google.com/store/apps/details?id=com.supercell.boombeach curl -H "Content-Type: application/json" -X POST -d '{"id": "com.supercell.boombeach", "revi
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