spider | 简简单单spider | Crawler library
kandi X-RAY | spider Summary
kandi X-RAY | spider Summary
简简单单spider
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Top functions reviewed by kandi - BETA
- Extracts information from Alvin9999
- Load SLS list
- Convert src_html to html
- Login to Zena
- Download captcha
- Return the list of xsrf values
- Get shadowsocksocks
- Decode a zbar image
- Load data from an excel file
- Adds the column width
- Download hosts
- Check if system is available
- Save config data to file
- Parses the XML data tree
- Fetch history data
- Get myshark list
- Fetches html data
- Parse the vbox list
- Load config file
- Backup hosts
- Parse a yhyhd document
- Loads the config file
- Parse the vpsml file
- Extracts SSSPs from the response
- Returns a list of Sishadow s
- Start get SSocks
spider Key Features
spider Examples and Code Snippets
Lines of Code : 7License : Permissive (MIT License)
Copydef process_spider_exception(response, exception, spider):
# Called when a spider or process_spider_input() method
# (from other spider middleware) raises an exception.
# Should return either None or an iterable of Response, def process_spider_output(response, result, spider):
# Called with the results returned from the Spider, after
# it has processed the response.
# Must return an iterable of Request, dict or Item objects.
for i in resu def from_crawler(cls, crawler):
# This method is used by Scrapy to create your spiders.
s = cls()
crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
return s Community Discussions
Trending Discussions on spider
QUESTION
I want to submit the form with the 5 data that's on the below. By submitting the form, I can get the redirection URL. I don't know where is the issue. Can anyone help me to submit the form with required info. to get the next page URL.
Code for your reference:
...ANSWER
Answered 2021-Jun-16 at 01:24Okay, this should do it.
QUESTION
So I have this dash app where I want to display a png image based on the user's input. It works, but the problem is every time the user makes a selection the image is shown on top of the previous image. I want to somehow clear the previous image so it only shows the most recently selected image.
In app.layout I have:
ANSWER
Answered 2021-Jun-14 at 23:36To update existing image you should use html.Img(...) instead of html.Div(..., children=[]) in app.layout, and update component_property='src' instead of component_property='children'
Many tools can save image/file in file-like object created in memory with io.BytesIO()
Example for matplotlib
QUESTION
I will explain the goal in more detail, The point of the script is to check (product code)values in column A on a supplier website, if the product is available, the loop checks the next value.
If the product is not on the site, a JSON PUT request is sent to a different sales website that sets the inventory level at 0.
The issue is how to assign the value in column B of the same CSV file to the PUT request
CSV file
...ANSWER
Answered 2021-Jun-14 at 13:45From scrapy’s documentation Passing additional data to callback functions, you basically want to pass the code to the data callback in Request’s cb_kwargs argument,
To get all codes, you could iterate on (COL-A, COL-B) pairs, not simply on COL-A values. Here we return the 2d numpy array, thus the list of rows, where each row is the COL-A, COL-B pair:
QUESTION
I wanted to spider a website and, if some text or a matching pattern is found in the HTML, get the URL(s) of the page(s).
Wrote the command
...ANSWER
Answered 2021-Jun-14 at 07:56spider a website and, if some text or a matching pattern is found in the HTML
This is impossible with wget --spider. wget manual says that when you use --spider
When invoked with this option, Wget will behave as a Web spider, which means that it will not download the pages, just check that they are there. For example, you can use Wget to check your bookmarks:
wget --spider --force-html -i bookmarks.htmlThis feature needs much more work for Wget to get close to the functionality of real web spiders.
wget with --spider option does fetch response headers, which you can print following way
QUESTION
I using CleanArchitecture solution. I have Data layer where ApplicationDbContext and UnitOfWork are located :
...ANSWER
Answered 2021-Jun-13 at 12:31finally, I found my answers in this article https://snede.net/you-dont-need-a-idesigntimedbcontextfactory/
Create ApplicationDbContextFactory in Portal.Data project:
QUESTION
I'd like to give a shot to using Scrapy contracts, as an alternative to full-fledged test suites.
The following is a detailed description of the steps to duplicate.
In a tmp directory
ANSWER
Answered 2021-Jun-12 at 00:19With @url http://www.amazon.com/s?field-keywords=selfish+gene I get also error 503.
Probably it is very old example - it uses http but modern pages use https - and amazone could rebuild page and now it has better system to detect spamers/hackers/bots and block them.
If I use @url http://toscrape.com/ then I don't get error 503 but I still get other error FAILED because it needs some code in parse()
@scrapes Title Author Year Price means it has to return item with keys Title Author Year Price
QUESTION
Please excuse the use of var, it is part of the challenge and is intended to help me learn about closure. Currently, the code gives all 100 h3's the same sentence. I've tried moving the randomName, randomWeapon, and randomLocation variables into the addEvent function. When I do this I assign the same h3 a new sentence on every click. I'm guessing I need to use .call or .apply, but I am new to functions, and internet tutorials just aren't getting me there.
...ANSWER
Answered 2021-Jun-11 at 20:59The problem is that your addEvent bind the click hander on the body and not on the h3. And the second is that you do e.preventDefault when you have not defined e (you should set it on the click handler,not the addEvent function) which causes an error and stops the execution.
If you had fixed the e issue, you would see that when you click on an h3 you get all 100 alerts.
Try changing
QUESTION
I have a bash script that checks if the CHECKURL variable has a response or not. If the url is not valid or doesn't exist the script immediately exits and echo a message "NOT VALID URL"
I have one problem in which the url https://valid-url-sample.com is a valid url however my IP is rejected on the load balancer because it only respond on 443 request from specific IP's. The result is the script stays running until I it requires me to control+c. I would like the script to handle this kind of condition and echoes "VALID BUT NOT REACHABLE", I also added timeout on the wget command but still no luck. any thoughts on how to handle this?
SCRIPT
...ANSWER
Answered 2021-Jun-09 at 08:53You probably want to use a log file like this:.
QUESTION
I am currently building a small test project to learn how to use crontab on Linux (Ubuntu 20.04.2 LTS).
My crontab file looks like this:
* * * * * sh /home/path_to .../crontab_start_spider.sh >> /home/path_to .../log_python_test.log 2>&1
What I want crontab to do, is to use the shell file below to start a scrapy project. The output is stored in the file log_python_test.log.
My shell file (numbers are only for reference in this question):
...ANSWER
Answered 2021-Jun-07 at 15:35I found a solution to my problem. In fact, just as I suspected, there was a missing directory to my PYTHONPATH. It was the directory that contained the gtts package.
Solution: If you have the same problem,
- Find the package
I looked at that post
- Add it to sys.path (which will also add it to PYTHONPATH)
Add this code at the top of your script (in my case, the pipelines.py):
QUESTION
How could I use a global defined variable (pandas data frame) df within a scrapy-spider?
ANSWER
Answered 2021-Jun-07 at 07:37You need to declare variable inside class, if you want to initialize do that in constructor.
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Install spider
You can use spider 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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