大约有 40,000 项符合查询结果（耗时：0.0551秒） [XML]
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
... # define unique name of spider
name = "spider"
start_urls = ["https://www.url.de"]
def parse(self, response):
# initialize items
item = CrawlerItem()
# store data as items
item["js_enabled"] = response.body.decode("utf-8")
Optional Addon:
I wan...
How to install a specific JDK on Mac OS X?
...ral" tab of "Java Preferences" utility.
See Apple Technical Q&A 1170: https://developer.apple.com/library/content/qa/qa1170/_index.html
EDIT:
If you prefer parentheses to backticks for command substitution, this also works:
export JAVA_HOME=$(/usr/libexec/java_home)
...
What are deferred objects?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How do I create a MongoDB dump of my database?
... rm -rf {} \;
delete all the backups older than 7 days
Good Luck.
ref:
https://www.digitalocean.com/community/tutorials/how-to-back-up-restore-and-migrate-a-mongodb-database-on-ubuntu-14-04
share
|
...
Priority queue in .Net [closed]
...heap.Add(10);
> heap.Add(5);
> heap.FindMin();
5
Install from Nuget https://www.nuget.org/packages/C5 or GitHub https://github.com/sestoft/C5/
share
|
improve this answer
|
...
Does reading an entire file leave the file handle open?
...t finalizers will ever run at any point prior to program termination.
-- https://devblogs.microsoft.com/oldnewthing/20100809-00/?p=13203
In particular:
Objects are never explicitly destroyed; however, when they become unreachable they may be garbage-collected. An implementation is allowed to ...
sort object properties and JSON.stringify
...this library will recursively allow you to sort any JSON you pass into it: https://www.npmjs.com/package/json-stable-stringify
var stringify = require('json-stable-stringify');
var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
console.log(stringify(obj));
Output
{"a":3,"b":[{"x":4,"y":5,"z":6},7],...
Python Anaconda - How to Safely Uninstall
... # (conda list; cmd shouldn't respond after the clean up)
Refer: https://docs.anaconda.com/anaconda/install/uninstall for more details.
share
|
improve this answer
|
...
How are feature_importances in RandomForestClassifier determined?
...culate the values from an instance of a scikit-learn random forest class:
https://github.com/pjh2011/rf_perm_feat_import
Edit: This works for Python 2.7, not 3
share
|
improve this answer
...
Composer install error - requires ext_curl when it's actually enabled
...thread.php?t=1519176
After installing composer using the command curl -sS https://getcomposer.org/installer | php just run a sudo apt-get update then reinstall curl with sudo apt-get install php5-curl. Then composer's installation process should work so you can finally run php composer.phar install...