I want to overload the multiplication operator of a vector. At the same time, you can calculate the vector vector, and the vector float v is the vector . def __mul__(v1, v2): return vec3(v1.e[0]*v2.e[0],v1.e[1]*v2.e[1],v1.e[2]*v2.e[2]) ...
z how to solve this problem ...
I put keywordpackagename: in this table. ...
for example: the newly released Samsung Galaxy S9 features as follows: 1. The Exynos9810 processor is adopted, and the 2.RAM is 4GB. The battery capacity is 3000mAh. expect to extract the S9 Magi Exynos 9810 GB mAh. I hope you can give me some advice o...
Why is the python requests get proxy ip still own? some proxy ip displays the correct proxy ip address, and some proxy ip is their own address? Why? ...
Why does the last two of the following three functions get an exception while the first one doesn t? def func(lst=[]): def inner_func(): lst.append(10) return lst return inner_func() def func2(num=10): def inner_func(): ...
means there is no train of thought at all. if user An is only in the R & D group and id is 5, then the number after user An is 32 . How should I write this sentence? There is no external network. I don t know if I can see the pictures taken by pri...
how does the date element in requests.post determine when building a crawler request such as requests.post (url, data=post_data)-sharp pseudo code the content of this post_data is different when crawling different websites. how should this content...
does webpack reverse engineering have any friends who know about it? my source file can t be found. after webpack is packaged, how can I get the sourcemap file back to the source file? ...
I use CrawlSpider combined with the following Rules to automatically turn the page and climb the movie information of Douban top250: rules = ( Rule(LinkExtractor(restrict_xpaths= span[@class="next"] a ), callback= parse_...
pip3 list bs4 beautifulsoup ...
the running environment is ubuntu 16.04 python 3.5.2 cd project folder virtualenv-p python3 env source env bin activate pip install-r requirements.txt requirements.txt file contents are as follows: h5py==2.7.1 Keras==2.0.6 numpy==1.13.3 olefi...
I m trying to cram data on https: finance.yahoo.com . I found that if you type a few letters in the search bar, there will be a result that suggests popping up. Similar to Google and Baidu. I want to get down on my stomach with this suggestion. I f...
shouldn t text () extract the text information inside? I m a little confused ...
scrapy tutorial: http: scrapy-chs.readthedocs. Environment: python3.6 + windows7 Project structure Directory: mySpider:scrapy crawl domz: there is no [dmoz] output as mentioned in the tutorial, is there any new file, is there something I don t...
var re = quicks (brown). +? (jumps) ig; var result = re.exec ( The Quick Brown Fox Jumps Over The Lazy Dog ); (regular expression document from MDN) quck is a match quick beginning s is a match white space character, (brown) is the first group...
at present, the company s mysql database cannot be connected directly locally and needs to be connected through a springboard (windows server). The steps to manipulate the data each time are: connect the springboard machine (windows server,ip: 10.*...
this is the file I crawled to and put into the mysql database config: ...
now memcached is used for caching in the project. Now I want to use redis, that is, how to configure and use both memcached and redis,Django in the project ...
os x system, just contacted python. I have been using jupyter in anaconda to learn python,. Today, I suddenly had a frenzy and couldn t open jupyter. which python,python2.7python3.6anaconda I also activated this environment at the terminal. I was v...
problem description configure hot startup in "Run Debug configurations " of IDEA. Why do I set on update action to Update classes and resourcess, and not hot load when there is a update action? However, on frame deactivation can be hot loaded when se...
I am an individual developer, iOS project launched-Technical support URL, does not have its own website, how to fill in? ...
when I was looking at the layout of other people s blogs, I found an interesting problem. Its sidebar was positioned with position:fixed, but it did not set the values of top and left. At this time, it was not positioned relative to the viewport, but r...
before the H5 page, encountered such a demand scenario: the game rule is a pop-up window, but there is a maximum height limit, beyond the internal scroll bar, users can slide the contents of the pop-up window to see the full rules. But embarrassingly, a...
set cache handleShow (card) { if (!this.form.activityEndTime) { this.$message.error(""); return ; } else if (this.selectTicket.length < 10){ this.$refs.dialog.show(null, this.form.activityEndTi...