Pigeon | The pigeon is a 0.96 inch mini USB screen

I am using Room 2.4.0-alpha01

but it show me this error

Schemas required for migration are not found at path: \app\schemascom.pigeon.mangaer.AppDB/2.json. Cannot generate auto migrations.

here is my code:

My dataset is merged from 2 huge datasets and then NA-removed. It is now in shape (2707,18).

I have done

I have a dataframe with 10 columns. One column gives bird species' names. There's actually 300 species but I'm just interested in 200 of them. I would like to keep only the information about this 200 species.

Screenshot of my table: https://i.stack.imgur.com/OcJyI.png

I can't just write : filter(Species == "Mallard" & Species == "Wood-pigeon")

I have a matrix with all the 200 selected species. But, I don't know how to use this matrix to select to relevant rows in my dataframe. Is it possible with subset/filter/etc function to select rows based on a matrix?

What are the correct codes please ?

I'm sorry if this is a stupid question as I'm new to python and coding. Do ask if there are any doubts in understanding my problem.

I have a nested dictionary as

after hours I write this :

Client side : Here I have image.png ( original image )

I have file bird.lst, I need to read file contents and store data in map, here the idea is bird name is store in string and those having some attribute values that needs to be stored in vector. please help

eventually map looks like below, ex:

I am new to rust and trying to learn and experiment, here is a link to the playground with the issue and explanation below: https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=19920813410a42500045cf2c6cc94f12

jsfiddle: https://jsfiddle.net/knm81zL2/

I have a quiz like this:

When it's the first question there is just one listener on each button and clicking the wrong buttons doesn't produce the Well done alert or enables the Next button:

However when I go to the next question:

Clicking the previously correct Whale button would result in Well done alert and the Next button becomes enabled:

Clicking on the Monkey button does the same + makes the Monkey button green:

I need to scrape a book web site and save the information (price, code, fees, etc.) in a CSV file as a table, but when I try to save the data in the CSV file, I have the title name repeated several times and the information is vertical, I need to place it horizontally and at the end of the information in a book, I need the next information to be on the bottom line.