Oct 31, 2016 · And what they wrote initially would do exactly what they wanted (assuming correct indentation): create a list and append two other lists to it.

Like C arrays, array.array objects hold only a single type (which has to be specified at object creation time by using a type code), whereas Python list objects can hold anything. It also …

When growing an array for a significant amount of samples it would be better to either pre-allocate the array (if the total size is known) or to append to a list and convert to an array afterward. …

Technically speaking, this is not a JSON object (even though it's formatted in the JSON style), it's a python dict. It's not "coming out right with brackets and quotes" because you are append() …

Here is other example: import numpy as np import pandas as pd """ This just creates a list of tuples, and each element of the tuple is an array""" a = [ (np.random.randint(1,10,10), …

Nov 21, 2011 · I've been working in Python with an array which contains a one-dimensional list of values. I have until now been using the array.append(value) function to add values to the array …

newlist = [array([1,2,3,...5,4,3]), array([5,7,2,...4,6,7]), array([3,6,2,...4,5,9])] What would be the most pythonic way of getting a single array from the arrays in 'newlist' which is the addition of …

Oct 3, 2009 · @AndersonGreen As I said there's no such thing as a variable declaration in Python. You would create a multidimensional list by taking an empty list and putting other lists …

The cleanest approach is to copy the list and then insert the object into the copy. On Python 3 this can be done via list.copy: new = old.copy() new.insert(index, value) On Python 2 copying the …

Dec 13, 2013 · import numpy as Np # create an array with required shape. # Mind you cannot create an empty array. # Best way to create a zero array or ones array. shape_myarray=(3,3) …