Having problems installing scrapyEnvironment: WIN10 (64-bit), Python3.6 (64-bit)Install Scrapy:1. Install Wheel ( after installation, it is supported to install the software through the wheel file )PIP3 Install Wheel2, install lxml, Pyopenssllxml: Parse XML Library, very powerful, do crawler Bs4,selenium,xpath will usePIP3 Install LXMLPIP3 Install Pyopenssl3, Installation Pywin32Download URL: https://sourceforge.net/projects/pywin32/files/pywin32/
http://blog.csdn.net/cs123951/article/details/52618873WIN10 64-bit python3.4An error occurred while installing scrapy using PIP install ScrapyError:microsoft Visual C + + 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279Downloading the SDK7.1 is useless.So download the
Symptom : The throughput of the system is expected to be smaller, and the request object in the downloader sometimes looks more than concurrent_requests.
Example : We use a 0.25-second download delay to mimic the download of 1000 pages, the default concurrency level is 16, according to the previous formula, it takes about 19s of time. We use Crawler.engine.download () in a pipeline to initiate an additional
ScrapyScrapy is a lightweight web crawler written in Python that is very handy to use. Scrapy uses the Twisted asynchronous network library to handle network traffic. The overall structure is broadly as follows:Create a Scrapy ProjectThe S-57 format is an electronic nautical chart standard promulgated by the International Maritime Organization (IMO) and is itself a vector chart. These standards are publishe
1. Follow the online tutorial step-by-step experiment, run the Times wrong:' Htmlresponse ' object has no attribute ' XPath ' in ScrapyThe personal use is scrapy0.14.4, the answer that the search obtains is Scrapy version is too low, so personal went to the official website to download the latest version scrapy, download
Scrapy Official Website Installation steps
Platform Installation Guide Windows
Install Python 2.7 from the http://python.org/download/.
You need to modify the PATH environment variable to add Python executable programs and additional scripts to the system path. Add the following paths to the path:
C:\Python2.7\; C:\Python2.7\Scripts\;
Please open the command line and run the following command to modify th
Start by getting ready to create a scrapy project with the following directory structure:Note: There are 3 more files in the Spiders directory, Db.py,default.init and Items.json. Db.py is my simple encapsulation of a database access to the Lib file, Default.init is my database and agent-related configuration file, Items.json is the final output file.There are 2 ways to add proxies to a request, the first is to rewrite the Start_request method of your
Background: Pip installation has never been successful. Many modules cannot be installed using Pip, so you have to download the zip installation from GitHub.C: \ document and Settings \> Python E: \ scrapy-0.24 \ setup. py installIf the result fails, the message [err2] No such file or directory: 'readme. rst' is displayed. Baidu has a solution: CD to the directory where setup. py is located and then install
Install Scrapy first need to install PIP
However, during the installation of the PIP, you are prompted to install Setuptools
Then download the Setuptools installation package, the implementation of the Easy_install process error, missing zlib module
Runtimeerror:compression requires the (missing) zlib module
Need to download installation zlib
Yum Install zlib
Yum
One, manually update the IP pool
method One:
1. Add the IP pool in the settings profile:
ippool=[
{"ipaddr": "61.129.70.131:8080"},
{"ipaddr": "61.152.81.193:9100"},
{"ipaddr": " 120.204.85.29:3128 "},
{" ipaddr ":" 219.228.126.86:8123 "},
{" ipaddr ":" 61.152.81.193:9100 "},
{" IPAddr " : "218.82.33.225:53853"},
{"ipaddr": "223.167.190.17:42789"}
]
These IP can be obtained from this several websites: Quick agent, Agent 66, have agent, West Thorn Age
Install Scrapy error, we choose Anaconda3 as the compilation environment, search Scrapy installation (Error self-examination)To create a scrapy crawler project:Bring up cmd to the appropriate directory: enter:Scrapy Startproject StockstarDirectory file with spide code spider (used to write crawlers)Item file items.py in the project (the container used to hold the
1. Scrapy Shell
is a good interactive tool for the Scrapy package, and I'm currently using it primarily to validate the results of XPath selections. Once the scrapy is installed, it is possible to operate the scrapy shell directly on CMD.
Scrapy Shell
The
The road of Scrapy explorationScrapy Discovery Road Table of Contents
What is 1 scrapy?
2 How to learn
2.1 See Manual
2.2 Installation
2.3 Getting Started
2.4 Some tools
3 Some of the problems encountered
3.1 Request and response's splicing relationship,
3.2 How to post data
3.3 Request Filtered by
Install Scrapy log under WINDOWS101. Download python3.62. Add the path of Python.exe and Pip.exe to the system environment variable pathsuch as c:\python36_64C:\Python36_64\Scripts3. Update pippython.exe-m pip Install--upgrade pip4. Install the WIN32API packagePip Install Pypiwin32If it is not installed, running the ' scrapy Bench ' Test command will receive the
should have been hard coded into the spider, and now isolated and managed by the Member Center, the spider is easy to make generic.3, the main function of the Universal spiderOnce the address library and extraction rules are isolated, the Scrapy spider can focus on the following processes:
Get the content extractor from the Gooseeker Member Center via API: The URL of this API can be hardcoded into the spider, placed in the Start_urls list lo
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