3,232
questions
0
votes
1
answer
21
views
Why does using df.iloc[[i][0]] in Pandas' iloc() lead to specific behavior?
I am just starting to learn Pandas, and in a piece of code, there is a call to df.iloc[[1][0]] (where df is a pd.DataFrame with a shape of (60935, 54)). From the context of the code, df.iloc[[1][0]] ...
0
votes
0
answers
28
views
How to dynamically increment a list counter with letters in CSS for nested lists in Obsidian? [closed]
I'm using Obsidian and trying to customize the appearance of nested ordered lists. What I want is to have the following structure:
1.
a.
b.
2.
a.
b.
I've been able to get a numerical ...
- 1
0
votes
0
answers
37
views
Problem with recursion interfering with a for loop iterating over a nested array in JavaScript
I have a function in my JavaScript code which iterates over an array called background_check which has elements which are also arrays. I want to see if any element in this nested array is a 0 (each ...
2
votes
2
answers
90
views
Combining lists of lists of dataframes
I have a list of lists of dataframes, where each dataframe has a name according to its position in its list. I want to rbind my dataframes together according to their name.
A1 <- data.frame(cars*...
- 33
3
votes
3
answers
125
views
Create a nested list from a dataframe using multiple columns
I have a dataframe that I would like to convert to a nested list, by row. However, I need to group several columns into separate matrices in each nested element. All of the solutions I've seen put ...
- 45
3
votes
2
answers
97
views
Using a Recursive Function to Create a List Nested n Times
I have the following data frame.
Data_Frame <- data.frame(Factor_1 = rep(LETTERS[1:4], each = 12, length.out = 48), Factor_2 = rep(letters[1:3], each = 4, length.out = 48), Factor_3 = rep(1:2, each ...
- 756
0
votes
0
answers
28
views
Query regarding the rendering of $math$ in nested lists in CoLab
I am using CoLab to prepare some teaching materials. This is great because students do not have to have python (etc.) installed on their machines. (Thanks to google!)
I want to embed some math code in ...
-1
votes
2
answers
92
views
How to sort two nested list which are linked by indexes
I am trying to sort a nested list by date (which I can). Then if the list has duplicate dates, sort the duplicate dates by time.
The first part of the list is the date or time, second part is the ...
-2
votes
1
answer
80
views
How can I write more efficient for loops in python
I want to print the first letter of each string in a list on one line, and then the next letter on the next line, etc. When a string runs out of letters, it prints a space instead. Also this is my ...
- 7
0
votes
0
answers
11
views
Adding a nested list with two tiers to a table cell [duplicate]
I'm trying to create a nested list with multiple tiers (indents) within a table in markdown, like the image below (created in Microsoft Word):
enter image description here
I have this Markdown code ...
- 1
-1
votes
3
answers
51
views
Creating nested lists from a single list
Suppose I have a list like this:
my_list = ['a_norm', 'a_std', 'a_min', 'a_max', 'a_flag', 'b_norm', 'b_std', 'b_min', 'b_max', 'b_flag', 'c_norm', 'c_std', 'c_min', 'c_max', 'c_flag']
I want to ...
- 1,863
1
vote
1
answer
93
views
Counting number of nested levels in JSON object in T-SQL returns not properly formatted error message
The following script, in SSMS 19.3, throws this error:
JSON text is not properly formatted. Unexpected character '.' is found at position 1.
DECLARE @json NVARCHAR(MAX) = '{
"level1": {...
- 7,839
0
votes
0
answers
29
views
Flutter Nisted Listview builder with lazyload for each one
enter image description hereIn my case, there is a ListView builder for the Group header, and for each Group, there is a ListView builder for the items of the Group. Both the internal and external ...
-1
votes
2
answers
46
views
Take a Python dictionary with values as lists and create a new list of dictionaries each with the initial key and list values
If I have a dictionary with list values:
users = {'first-name': ['Jim', 'John', 'Jane'], 'last-name': ['Boothe', 'Smith', 'Doe'], 'user': ['100', '101', '102']}
How can I create a new list of ...
0
votes
1
answer
54
views
How to store nested lists in Postgres?
How can I store nested lists in Postgres in way that's easy to use them in my Python program later?
I plan to write the lists to the database once and reuse them many times. I've been able to store ...
- 1,583