141,939
questions
0
votes
0
answers
20
views
Why are lists performing faster than numpy arrays in my n-body integrator? [closed]
I made a simple n-body integrator using Euler's method in python. I didn't know about numpy arrays, so I treated each vector as a list of x, y, and z variables. I even made my own magnitude() function ...
-4
votes
1
answer
43
views
Python list of Cities in European Country [closed]
I'm going out on a limb here but is there a library that can see if a city is in a country?
Without having to create your own dictionary?
I'm searching about and can see pycity but that is more for US ...
- 3
1
vote
0
answers
12
views
Esp8266 randomly resets after a lot of time (9 hours)
I have esp8266, it connected to 3 temperature sensors. I put all data in list (temperature and time). After 9 hour of work esp8266 just refresh everything and all data get lost. I tried check my code, ...
- 11
-3
votes
1
answer
50
views
How can I make a list like this? [closed]
I have some lists like these
list_0 = [1, 2, 3]
list_1 = [4, 5, 6]
list_2 = [7, 8, 9]
I wanted to access all numbers in the lists just in one list without having to combine them.
For example I don't ...
0
votes
2
answers
58
views
Out of Memory Exception throwing when add one million records to a list before Saving using EF
Trying to save one million records into a SQL server table using EF Core. First reading the one million record from a staging table and store into a List then using the EF Core's AddRangeAsync ...
- 3,892
0
votes
1
answer
34
views
Iterating and updating a column using a list
originallist = df['Customer'].tolist()
I have an list of customers. Within these customers, i have some translations to do which i have done. In other words, i iterate through the original list of ...
- 3
1
vote
2
answers
62
views
Pandas create % and # distribution list in descending order for each group
I have a pandas dataframe like as below
data = {
'cust_id': ['abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc'],
'product_id': [12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
'...
- 7,573
0
votes
1
answer
54
views
Is there a better method to replace values in a Python list? [closed]
I am downloading aurora forecast data from the NOAA SWPC. The data is available as JSON and part of it is a list of lists (?) containing lon, lat and value like this:
[
[0,-90,4],
[0,-89,0],
....
- 139
0
votes
0
answers
6
views
how to filter out error table in a list power query
Can I request your help? I have a list which contains tables and some are showing as error. I am trying to filter the list to exclude error items but I can't figure out how.
Appreciate any help you ...
- 1
0
votes
1
answer
47
views
Comparing dictionary of countries with a column of countries [closed]
I have a dictionary/country list which i took from pycountry (list(pycountry.countries)
I am importing a column from excel called CountryNames
i thought by creating 2 for loops, i could then compare ...
- 3
0
votes
0
answers
30
views
Nested Lists (in R): Assign a value to a nested list from a list with a single value and the same structure [duplicate]
Suppose there are two lists; my_List_B will always have a single element that either
will be present in my_List_A or,
is to be added to my_List_A
Is there a simple way to change my_List_A with the ...
- 51
1
vote
4
answers
82
views
How to check if an input is a specific string when putting into a list
I'm trying to have the user input a number, that input is checked to see if it says "stop", then the number is added to a list. I want it to keep going until you type "stop" and ...
0
votes
2
answers
42
views
Changing the Class of Multiple Dataframes' Columns with For Loop in R [duplicate]
I have many dataframes imported from csv files, all having one similar column name: ActivityHour. Its class was imported as character, but I want to change it to date and time with the lubridate ...
- 3
4
votes
3
answers
186
views
Filtering a List with other two Lists
Consider the following three example lists:
List<string> localPatientsIDs = new List<string> { "1550615", "1688", "1760654", "1940629", "34277&...
- 51
0
votes
1
answer
21
views
How to fetch object data from Modal Input to Homepage with Array Function for making Contact List?
I am new in this field, want to learn coding in React native to develop Mobile App.
I want to develop one Contact List with React Native
In Home page I put one (+) button to toggle / opening of the ...
