MiCA | MiCA gossip framework research project | Application Framework library

I have a little problem with a multi-window UWP app.

I have the Mica material applied to my page and when I run my program, the first window shows with the Mica material. If I click on show second window, It pops up, but the background is in my system-accent-color, not the Mica material.

Here my code of MainPage.xaml:

Depending on the fact I use one or the other following line of code , I get an error.
This one works well.

I modified the WinUI2.7 code according to the official documentation(XAML Controls Gallery), but I want to remove the "Settings" button at the bottom of the page.

Screenshot

Here is my code below.

MainPage.xaml

I have two dataframe which I want to join normally i do inner_join which gives only the one which are present in both dataframe and rest and not shown in my output.

How to do innerjoin and keep all the rows and assign label

First dataframe

I'm trying to get all possible combinations for each list in a nested list. I've tried the following code below, but it is printing an empty list

I have an html file of a city' ways, from which I want to extract only those which are secondary, and its following lines (extract below):

I have the following data structure, and I'm trying to render each object individually on click whiteout overwriting the previous value with the current value.

I wrote this code:

I wrote some code to search for all tags matching any of a list of values, and then get a sibling tag if True. When I search for values one by one, the output is ok, but when I search for all together, some are missing...I supose it should be an error about re.compile(), but I don't know which one.

Any help will be appreciated, Thanks in advance!