CatSpider | Crawler library
kandi X-RAY | CatSpider Summary
kandi X-RAY | CatSpider Summary
Python编写的异步爬虫微框架,重新造轮子,可以支持爬取队列、Request定制、代理访问和页面抓取、数据清洗等功能。
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Top functions reviewed by kandi - BETA
- Pretty print an object
- Print the object
- Helper function to create spaces
- Start download
- Get ip list
- Generate a random user agent
- Returns the size of the queue
- Checks if the list is empty
- Returns the size of the list
- Get no wait result
- Remove the item from the list
CatSpider Key Features
CatSpider Examples and Code Snippets
def _calculate(days: int, absent: int, late: int) -> int:
"""
A small helper function for the recursion, mainly to have
a clean interface for the solution() function below.
It should get called with the number of days (correspondi
def solution(num_turns: int = 15) -> int:
"""
Find the maximum prize fund that should be allocated to a single game in which
fifteen turns are played.
>>> solution(4)
10
>>> solution(10)
225
"""
def solution(days: int = 30) -> int:
"""
Returns the number of possible prize strings for a particular number
of days, using a simple recursive function with caching to speed it up.
>>> solution()
1918080160
>&
Community Discussions
Trending Discussions on CatSpider
QUESTION
I have a spider that needs to fetch an array of object where each object has 5 items. 4 items are on the same page and the 5th item is a URL which I need to extract data from and return all 5 items as text. In the code snippet below, explanation is the key that lies on the other page. I need to parse that and add its data along with the other attributes while yielding it.
My current solution when exported to a JSON file shows up as follows. As you notice, my "e" is not resolved. How do I get the data?
...ANSWER
Answered 2017-May-14 at 17:20Scrapy is an asynchronous framework, which means none of it's elements are blocking. So Request
as an object does nothing, it's only stores info for scrapy downloader, thus it means you cannot just call it to download something like you're doing right now.
Common solution for this is to design a crawl chain by carrying your data through callbacks:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install CatSpider
You can use CatSpider like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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