alkali | a simple python database | SQL Database library
kandi X-RAY | alkali Summary
kandi X-RAY | alkali Summary
Alkali was featured on PythonBytes episode #119!. Alkali is a database engine, written in Python 3. It's raison d'être is to provide a Django-like ORM while controlling the on disk format. If you already have your data in a real database like Postgres then you'll want SQLAlchemy, if however, your data is in json/yaml/csv/other/etc files then Alkali might be exactly what you're looking for. Full documentation at For some examples, please go straight to the quickstart guide: Here's a teaser to whet your appetite.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Groups by field
- Filters the filter against the given field
- Filter the query
- Returns a list of fields that match the given fields
- Set the file descriptor
- Lock the file
- Unlock the lock
- Return the primary key
- Returns a dict of values for the given fields
- Called when a foreign field is deleted
- Delete a model instance
- Register a foreign field
- Save a model instance
- Get or create a single object
- Get a single instance of this model
- List of registered models
- Write a JSON object to the file
- Returns a list of all instances
- Import a pseudo import
- Read a model from the file
- Return the primary key field
alkali Key Features
alkali Examples and Code Snippets
Community Discussions
Trending Discussions on alkali
QUESTION
I am trying to streamline the isotope handler in a react component -- I want to create filter options that would be like catergory[metal] or catergory[transition] -- and combo filters like catergory[metal, transition].
the sandbox for this. https://codesandbox.io/s/brave-sea-tnih7
So like filterFns[ filterValue, "param2" ] -- how to push 2 params into the filter functions - rather than these fixed greaterThan50 -- a "greaterThan(50)", "greaterThan(5) -- this dynamic filtering type of handler "
latest sandbox https://codesandbox.io/s/brave-sea-tnih7?file=/src/IstotopeWrapper.js
...ANSWER
Answered 2020-Oct-11 at 04:07In you application you can stor filters inside an array and update filters array to either new filter (single filter mode) or push newly selected filter on top of existing filters list.
Take a look at updated codesandbox here.
First of all we are registering our filter method with Isotope:
QUESTION
I am working on a download manager in C# integrated Chrome. When I try to download from google drive the response doesn't return a Content-Length and this means -1 (Unknown). But IDM gets the correct size and I couldn't understand how. Anyone knows please help!
The file in this url: https://drive.google.com/uc?export=download&confirm=-wOm&id=1gC_fEKIlv9oaLQUAKH4GvRvAIqhDgAbz
Response headers:
...ANSWER
Answered 2020-Aug-15 at 01:30You have not posted your code to review your issue. However, you should consider two things in Google Drive requests. First you should use Google APIs to process the requests. This means, you'll have to have an authenticated requests through OAuth2 protocols.
If you're using their NuGets, then you can simply use the DriveService to get the file size.
QUESTION
I looked around and found no answer that supports n number of tables in one page where each table has its own filter, sort and pagination.
On https://material.angular.io/ they have given an example of one table for a page.
This is what I've written for one table-
HTML
...ANSWER
Answered 2020-Jun-23 at 17:20You're going to need to use @ViewChildren instead of @ViewChild and make use of QueryList to read childrens effectively.
You'll also need ngAfterViewInit() once the initialization of a component's view is completed to update paginator and sort.
Please read between the lines for comments.
TS
QUESTION
The following query returns the Wikipedia articles listed as 'Good Articles' (limited to 5 for the sake of the question).
This works fine, I get the following result:
...ANSWER
Answered 2019-Nov-23 at 20:52You should raise the limit of the category module: https://en.wikipedia.org/w/api.php?action=query&generator=embeddedin&geititle=Template:Good%20article&prop=categories&cllimit=max
Even that doesn't fully help, there are just too many categories to return them all in one query. Look at the documentation of query continuation for how to handle that (links to an old version because the current one does not seem to explain the concept clearly).
QUESTION
I have some efficiency problems with the algorythm I am going to explain by snippets:
First the
...df_fsis created. I create a random DataFrame here to make it work with the example
ANSWER
Answered 2019-Apr-08 at 22:16I'm still confused about your ask, but I think you should try looking at a loop using enumerate:
http://book.pythontips.com/en/latest/enumerate.html
This will allow you to use the i value as well as the column name.
QUESTION
I'm trying to make a program that will allow the user to input either a name or symbol of an element from the periodic table, and will then output some data about that element. So far I've managed to get the user to be able to input either a name or a symbol and have it output correctly, but if the user inputs something wrong then the code doesn't output anything, and will stop accepting an input of a symbol and only accept an input of a name. I would like to know how I would be able to break out of the loop and tell a user that their input is invalid only after the input has been checked against every item in the enum, since my current solution doesn't work. I'm new to Java, so a simple explanation as to how and why would be greatly appreciated.
...ANSWER
Answered 2018-Dec-01 at 20:35Assuming I understand your question, I would add the logic for parsing Element(s) to Element. You can create Map(s), one to symbol and one of name to corresponding Element instances and then invoke them in whichever order you choose. Like,
QUESTION
I've been working on a program that will take the user's input of the name or symbol of an element in the periodic table and then output some facts about that element. After quite a few questions on here I've gotten to the point the program stores all the data correctly, outputs it in the way I want and can accept an input of both the name or symbol. The problem I'm having now is that the breaks I have inserted into a loop are not actually breaking from the loop, and I'm really not sure why. The program will just keep on asking for an input even if it received a correct input. In addition, if the user inputs a symbol rather than a name the program will repeatedly tell the user that their input was invalid before finally outputting correctly (and then restarting the loop rather than breaking as it should). I'm new to Java, so if anyone could help me fix either of these issues and explain why the problem occurred and how they fixed it fairly simply I would greatly appreciate it.
...ANSWER
Answered 2018-Dec-01 at 18:12The problem is that the break's are within the for loop, so it only breaks to for loop. If you want to break the do-while loop you can use a label:
QUESTION
I couldn't really think of how to phrase the question, but I have a fairly simple program that will ask the user to input an element from the periodic table and then will output the symbol, group and atomic mass of that element. Currently it will only accept an input of the name of the element, and I'm trying to make it accept an input of the symbol too, but I don't know how to do that. For example, at the moment if the user inputs "Iron", the program will output correctly, but if they input "Fe" it will not work. I want the input of "Fe" to work as well. I'm very new to Java, so a simple explanation as to how and why would be greatly appreciated.
...ANSWER
Answered 2018-Dec-01 at 16:10The collection Element.values() contains all the values of your enum class.
After the user gives input, loop through this collection and check the symbol property to find the element.
QUESTION
Continuing on from this post I've been looking into and messing around with enums a bit, and now I've managed to create an enum that holds the values I want and outputs them in the way I want, now I'd just like to know how I could get the same output but for a single item rather than every item. Again, I'm very new to Java so a simple explanation as to how and why would be greatly appreciated.
...ANSWER
Answered 2018-Nov-16 at 00:56You can use the valueOf method passing in the user input to retrieve the enum:
QUESTION
I have a long string with multiple bracket inside string , i am tried to fetch only last part of the string , But i have achieved first part till end.
...ANSWER
Answered 2018-Jul-19 at 12:25TRY :
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install alkali
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
