Select specific element of list of lists

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I have a list of lists:

[[0.01, 0.19, 0.72], [0.03, 0.27, 0.31], [0.23, 0.74, 0.09]]

I want to extract a different element from each list. So from the first list the second element, but from the second and third list a different element. I saved those in a different list;

selections = [1, 2, 0] 

So the output I would like to have is:

0.19, 0.31, 0.23

l=[[0.01, 0.19, 0.72], [0.03, 0.27, 0.31], [0.23, 0.74, 0.09]]
selections = [1, 2, 0]
for i in range(len(l)):
    print(l[i][selections[i]])

Output:
0.19
0.31
0.23

Python, Given a list of lists, write a Python program to extract first element of each sublist in the given list of lists. Examples: Input : [[1, 2], [3, 4, 5], [6, 7, 8, 9]] Output : [1, 3,� Lists are very important structures in the Wolfram Language. Lists allow you to treat any kind of collection of objects as a single entity. Sometimes you need to pick out or extract individual elements or groups of elements from a list. Set up a list of the first 10 squares (stored as v):

you can use this :

my_list=[[0.01, 0.19, 0.72], [0.03, 0.27, 0.31], [0.23, 0.74, 0.09]]
select=[1,2,0]
j=0
selector=[]
for i in select:
    selector.append(my_list[j][i])
    j=j+1
selector

output

[0.19, 0.31, 0.23]

Selecting elements from a list of lists, A bit too long for a comment. Your first attempt Select[list1,list1[[1,2]]>0] (I assumed that there is closing bracket in the end) doesn't fail, it does a different thing� Given a list of lists, the task is to determine whether the given element exists in any sublist or not. Given below are a few methods to solve the given task. Method #1: Using any()

x = [[0.01, 0.19, 0.72], [0.03, 0.27, 0.31], [0.23, 0.74, 0.09]]
selections = [1, 2, 0]

for i,j in zip(x,selections):
    print(i[j])

Python: Reverse a list, sub list or list of list, Python provides a way to slice a list i.e. selecting specific elements from a list Use list comprehension to reverse the contents of sub lists. In order to solve this elegantly you need to understand that you can use ['…'] instead of $… to access list elements (but you will get a list back instead of an individual element). So if you want to get the elements likelihood and fixef, you can write: modelset[[1]][c('likelihood', 'fixef')] Now you want to do that for each element in

I use Python Matrix

list=[[0.01,0.19,0.72],[0.03,0.27,0.31],[0.23,0.74,0.09]]
nums=list[0][1],list[1][2],list[-1][0]
print(nums)

Output

(0.19, 0.31, 0.23)

Python Lists and List Manipulation | by Michael Galarnyk, Access Values in a List. Each item in a list has an assigned index value. It is important to Duration: 7:20 Posted: May 29, 2017 This method uses zip with * or unpacking operator which passes all the items inside the ‘lst’ as arguments to zip function. Thus, all the first element will become the first tuple of the zipped list.

11. Lists — How to Think Like a Computer Scientist: Learning with , The values that make up a list are called its elements, or its items. Lists are similar to strings, which are ordered collections of characters, except that the elements As usual, the sublist selected by slice contains all the elements up to, but not One particular feature of range is that it doesn't instantly compute all its values:� Select[list, crit] picks out all elements ei of list for which crit[ei] is True. Select[list, crit, n] picks out the first n elements for which crit[ei] is True. Select[crit] represents an operator form of Select that can be applied to an expression.

Get Elements of Lists—Wolfram Language Documentation, Sometimes you need to pick out or extract individual elements or groups of elements from a list. Set up a list of the first 10 squares (stored as v):. Add an element to the start of a list. new_element: xs. Add an element to the end of a list. xs ++ [new_element] Insert an element into the middle of a list. Generally, you will have to split the list into two smaller lists, put the new element to in the middle, and then join everything back together. For example: let (ys, zs) = splitAt n xs in

Python Lists, List. A list is a collection which is ordered and changeable. In Python lists are written with To change the value of a specific item, refer to the index number:� @hendawy (Master Works) As @Ranjith - ALister (Cookie Analytix) mentions you cannot use an index with the List data type in AA. The only way to extract the values is to loop through the list and on each iteration use the list variable to get the current value . To store data and extract from an index, the only way is to use an array.

Comments
  • [sublist[select] for sublist, select in zip(my_list, selections)]