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Questions tagged [list]

The list tag may refer to: a linked list (an ordered set of nodes, each referencing its successor), or a form of dynamic array. Not to be used for HTML lists, use [html-lists] instead.

1 vote
4 answers
39 views

Append lists of a dictionary

I have a dictionary with values are lists. n = {'d1': [1, 2, 3], 'd2': ['a', 'b', 'c']} m = {'d1': [4, 5], 'd2': ['d', 'e']} I am trying to have as an output. {'d1': [1, 2, 3, 4, 5], 'd2': ['a', 'b', ...
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  • 1,079
-1 votes
0 answers
11 views

Rabdom list in a pwa

I have to implement a program that must show a random list of actions to put in a right order to make coffee. Should i start a spring project with mysql? Do I need to create a table with the actions?
user avatar
0 votes
0 answers
20 views

combine values from a list of a dictionaries [duplicate]

I'm trying to combine a list that contains dictionaries with matching values. list = [ {"country": "united states", "state": "texas", "city": &...
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0 votes
1 answer
28 views

Printing two lists by taking turns and using time.sleep in Python

I have two lists: [1,2,3,4,5] and ['a','b','c','d','e','f']. (Note that one has 5 items, the other 6). What I want is to print them, item-by-item, taking turns, with a one-second delay, each list on ...
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0 votes
3 answers
51 views

How to re-order and expand lists to have same size?

I am trying to re-order and extend lists of dictionary values with the right position and fill them with zeros. myDict = { "col-1": ['a', 'b', 'c', 'd', 'e', 'f', 'g'], "col-2&...
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  • 1,079
0 votes
0 answers
15 views

Sorting in a list with tuples with second element in a tuple [duplicate]

I have a code: scores_list_ind = list(enumerate(scores_list, 1)) and I have output: [(1, 3), (2, 5), (3, 7), (4, 4), (5, 8), (6, 7)] I tried to use sorted() and it sorted me to this: [(6, 7), (5, 8),...
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-1 votes
0 answers
26 views

Python generate sets of pairings between two lists [duplicate]

Given two lists in Python a = [1, 2, 3] b = [4, 5, 6] We can use c=list(itertools.product(a,b)) to generate all possible permutations, this will output [(1, 4), (1, 5), (1, 6), (2, 4), (2, 5), (2, 6),...
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  • 1,045
1 vote
1 answer
31 views

Generate a random amount of numbers and sort them with bubble sort

I am new to programming and I am trying to generate an amount of numbers b and then sorting it with bubble sort without using the sort function of list (Because that would be too easy). Since arrays ...
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  • 11
-1 votes
2 answers
23 views

Python - Sequentially group strings in a list starting with the same substring

I have a list of strings that looks like this: my_list = ["A-Item one", "B-Item two", "A-Item three", "A-Item four", "B-Item five", "B-Item six&...
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  • 47
0 votes
3 answers
38 views

a function that takes a list of integers and prints a string of stars which has the length of a value of an integer to the screen

first of all, hello to everyone! I'm a first timer in here! anyways, I had this problem and I dont have a real direction... I tried this: def MyStars(inputList): l = len(inputList) ret = [] for x in ...
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4 votes
3 answers
73 views

Strange slicing behavior in Python

I found this to be a bit strange. Can anyone explain to me: Why, if I have a list like this: l = [1, 2, 3, 4, 5] and I do this reassignment: l[-1:0] = [99,] then it inserts the 99 to the left of the ...
user avatar
-1 votes
1 answer
30 views

Add key and list value to a dictionary

I have this basic list dictionary {'2011': ['William', 'George', 'Nancy'], '2012': ['Joe', 'Math']} that I want to add a key and list but it doesn't work here my code: my_dict = {"2011": [&...
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0 votes
0 answers
28 views

How to call multiple distribution functions from different vectors into a function in R

Lets talk you through my workflow: General idea Based on data in a dataframe, select the appropriate distribution functions, combine them in all possible ways to get the mean of the combined ...
user avatar
-1 votes
0 answers
19 views

"Maximum value in an array of Increasing and Decreasing" some test cases failed in hackerrank & array lists only to be used no simple array

Was practicing some questions on hackerrank so I encountered this program not all test cases passed, please guide where is the mistake. Thanks The relevant code block is shown below pls guide where I ...
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0 votes
0 answers
25 views

Choose best prediction

I have ML model, I have six images to make predictions, accuracy is 95% for top 3 results and 77% for top 1 result, actually predictions are in top 3 results match Have a look at example res_objs, ...
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