mkr | Command Line Tool for Mackerel

I have a MKR1000 project that connects to my WiFi network. The MKR1000 connects to my WiFi when powered via the USB port, but not when powered by the 3.7V LiPo. Is there a minimum power requirement that disallows the WiFi function when on battery power, or is there some other reason it's not working?

Here is a simple sketch I'm using to test; it connects when plugged in to the USB, but not when unplugged.

I'm scraping website and come to the part where to put it in Dataframe. I tried to follow this answer but no expected output.

Here's my whole code

I'm trying to use GridSearchCV to find the best hyperparameters for an LSTM model, including the best parameters for vocab size and the word embeddings dimension. First, I prepared my testing and training data.

I'm trying to return value via AJAX. Below is the code that I put together based on some examples I found and it seems to work, but I think there's a better way of doing it?

I'm trying to fill a dictionary using scraped data from a web site, I get the data, then I assigned it to the dictionary, when I print the dictionary the data shows up. I haven't been able to access only one row of the dictionary, what am I missing?

Here is the code:

I try to filter out some specific data out of the list I get from an api request of a crypto price ticker.

This prints all the data:

My custom board with Atmel SAMD21 microcontroller (same as Arduino MKR Zero) is not making a USB port since yesterday. The board was working fine before that.

Please suggest ways to resolve this issue. What are the possible reasons for such an issue?

Since reset is equivalent to powering the board ON and OFF which has not resolved the issue, can burning the bootloader again help?

Further information:

1. The board seems fine. It powers ON and OFF in the usual manner.
2. This problem with the USB port connection happened while I was trying to upload the code.
3. The USB pin connections on the board have been checked as well as tested with different USB wires.

Appreciate your help.

I've trying to work out why someone would write the following section of code in a Arduino loop. To me, it doesnt make sense, why have a return in a if statement? Does it just return to the start of the loop and not carry on with the rest of the loop. Here's the snippet of interest:

I'm running an algorithm to predict prices and enter trades for me using the ccxt API in python. I wish to execute a trailing stop loss order and I enter such a long position like this: