cart | Classification and Regression Trees in python | Machine Learning library
kandi X-RAY | cart Summary
kandi X-RAY | cart Summary
Classification and Regression Trees (CART) in python from scratch. Yields same result as scikit-learn CART.
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Top functions reviewed by kandi - BETA
- Example example of regression tree regression
- Grow the tree
- Internal method to prune the feature
- Calculate impurity
- Split the tree
- Predict for the given data
- Show the tree
- Estimate the root node
- Predict given features
- Print the tree
- Example classification example
cart Key Features
cart Examples and Code Snippets
Community Discussions
Trending Discussions on cart
QUESTION
I am trying to create a shopping cart in JavaScript. When I click on the button, the price of item should increase according to the number of times I have clicked on the button. I've tried the below code but it's not working. The problem is that after clicking few times the multiplication goes like this:
suppose initial price =49
49 x 1
49 x 2
94 x 3
282 x 4 (it should be 49 x 4);
I have modified the code,it works fine in console.log() but gives different result if I assign the variable newPrice to document.getElementById().innerHTML
ANSWER
Answered 2021-Jun-15 at 12:34I think this
const newprice = document.getElementById("discount").innerHTML *=counter;
should be
const newprice = document.getElementById("discount").innerHTML +=counter;
note the + and not the * before the =counter. the plus is adding the star is multiplying.
QUESTION
I want to able to loop my arrays and calculate the total price and display it in the console. this is suppose to be a cart application. I assign all the anchor tags to cart variable that loops through the anchors tag and assign the the tags to the values in my beverages array to be able to display it but i cant display the total amount of all the prices.
html
...ANSWER
Answered 2021-Jun-15 at 18:46Instead of writing too much and looping .... See this , it might help you build what you are willing too
HTML
QUESTION
I'm using Django for Backend, PostgresSQL as DB and HTML, CSS and Javascript as Frontend. I am calling Django API via Javascript. Where user is adding a product to a cart, and I'm calling the cart with DRF to show all the data to the user. But problem is that, user can see all the data of other user. So, how can authenticated user can see his/her selected product on a cart.
Here is a detailed code:
views.py
adding product to cart
ANSWER
Answered 2021-Jun-15 at 13:25you have to pass user id when you are calling ajax.
If you are using GETmethod than pass user id in URL and access it via argument in your view for eg.
QUESTION
Heyy ^^ I'm coding a selenium program, but I'm stuck in one place. This program is made to buy 1 graphics card, on a French site, for my son's birthday. So there you have it, I coded everything but now my concern is that the web page of this graphics card is only available when it is in stock so the program cannot find the button by xpath "add to cart" . So I had the idea to make a loop so that as long as the "add to cart" button is not available, the program opens the page of the graphics card to infinity (like this when it is available, the button appears and the rest is done). However, I don't know how to achieve this condition, this loop, can you help me? I am on selenium with webdriver
...ANSWER
Answered 2021-Jun-15 at 10:13addtocart = driver.find_elements_by_xpath('somexpath')
while (not addtocart):
time.sleep(10) # wait for 10 seconds
driver.refresh()
addtocart = driver.find_elements_by_xpath('somexpath') # refind to avoid stale element exception
addtocart[0].click()
QUESTION
so im developing website using nodejs, and then deploying it to microsoft azure, and using Azure Database for mysql server to be exact, and importing my databse using mysql workbench, now the problem is in the CORS, everyhting going well i run it on chrome and firefox in the same pc works fine, but when i try to acces the website using another pc, i get the error says "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:3000/data/price%20asc. (Reason: CORS request did not succeed)".
heres my nodejs code:
...ANSWER
Answered 2021-Jun-15 at 09:41If you are using Azure app service to host your nodejs app,the most fastest way to config CORS on Azure Portal => app service => CORS :
I did some test on my side and this is my nodejs server code(as you can see, no config for CORS) :
QUESTION
I am trying to sort the values of my columns depending on the date (d/m/y + hour: min: sec). Below I will show you an example of the format of the given data:
Initiator Price date XXX 560 13/05/2020 11:05:35 Glovoapp 250 12/05/2020 13:07:15 Glovoapp 250 13/04/2020 12:09:25 ...ANSWER
Answered 2021-Jun-12 at 05:45The below works. There are two steps:
- Make a mask to select the right rows
- Then do the groupby and sum on only those rows
Mask function:
QUESTION
The task is to build an accurate price calculator which accounts for a sales price based on quantity. I've built a gross price calculator using compiledCart.reduce() method, (below) however I can't figure out how to add the sales functionality.
If the user buys 1 Candy, the price is $3.97, if the user buys 2, the price is $5.00. If the user buys 3, then first two are $5.00 and the 3rd is $3.97. Same thing if the user buys 5. The first 4 are $10 and the 5th one is $3.97
My compiledCart variable looks like this:
...ANSWER
Answered 2021-Jun-15 at 05:53if the quantity is greater than 2 then:
divide the quantity by 2 and multiply by salesPrice
QUESTION
I'm unable to add the product in cart. I want to see the product is adding to cart or not. but the process is not happening. I'm using Django as backend, PostgresSQL as DB and HTML, CSS and Javascript as backend.
The Codes Goes here:
views.py
PRODUCT DETAIL
ANSWER
Answered 2021-Jun-15 at 04:13You are not calling the save() method.
QUESTION
I am building an order form that limits how many items you can order based on the stock of the item. I have a menu collection which has items
ANSWER
Answered 2021-Jun-10 at 20:49You should deffinitely use a cloud function to update the stock. Create a function onCreate and onDelete functions trigger. If users can change data you would also need to onWrite function trigger.
Depending on the amount of data you have you woould need to create a custom queue system to update the stock. Belive me! It took me almost 2 years to figure out to solve this. I have even spoken with the Firebase engeeners at the last Firebase Summit in Madrid.
Usualy you would use a transaction to update the state. I would recommend you to do so if you don't have to much data to store.
In my case the amount of data was so large that those transactions would randomly fail so the stock wasn't correct at all. You can see my StackOverflow answer here. The first time I tought I had an answer. You know it took me years to solve this because I asked the same question on a Firebase Summit in Amsterdam. I asked one of the Engeeners who worked on the Realtime Database before they went to Google.
There is a solution to store the stock in chunks but even that would cause random errors with our data. Each time we improved our solution the random errors reduced but still remained.
The solution we are still using is to have a custom queue and work each change one by one. The downside of this is that it takes some time to calculate a lot of data changes but it is 100% acurate.
Just in case we still have a "recalculator" who recalculates one day again and checks if everything worked as it should.
Sorry for the long aswer. For me it looks like you are building a similar system like we have. If you plan to create a warehouse management system like we did I would rather point you to the right direction.
In the end it depends on the amount of data you have and how often or fast you change it.
QUESTION
I have a fairly simple shopping app (the Odin Project Shopping Cart project) using react-router-dom. I am keeping the contents of the shopping cart in App component state, but when a new route is rendered, the component state is lost. How do I get the state to persist across route changes?
My App.js looks like this:
...ANSWER
Answered 2021-Jun-13 at 16:18useContext hook: React context
Redux: Official Redux document
And btw, react-router supports passing states as props but I don't recommend it
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install cart
You can use cart 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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