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Python list vs. array – when to use?
(11 answers)
Array versus List<T>: When to use which?
(16 answers)
Closed 4 months ago.
I have values from 0-300, I must only project values >50 and <200,
I can do this with both List and Array but I am forced to use a Array for this task,
what is the exact difference between the two in terms on ability?
I was able to do it with both List and Array but still confused between the use of list if you can do the same thing with an Array
Related
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python order of elements in set
(2 answers)
Why is the order in dictionaries and sets arbitrary?
(5 answers)
Closed 26 days ago.
I have a list a:
a={4941, 4980, 3855, 4763, 4955}
I convert into a list:
b=list(a)
b now becomes [4980, 4955, 4763, 4941, 3855]
Sorry am I missing something? Eventhough set is an unordered structure why should it change the order ? Or is it the list function that is doing this?
Sorry if this is too naive a question! Many thanks.
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Is there a simple way of having a python list containing a given type of object only
(2 answers)
Python Typed Array of a Certain Size
(2 answers)
Closed 27 days ago.
I am trying to initialize a list object in python that accepts only one data type, let's say that I want to make a list of integers in c++, I would write int list[] = {1,2,3};, what is the python equivalent of this?
This question already has answers here:
Append a dictionary to a dictionary [duplicate]
(7 answers)
How to index into a dictionary?
(11 answers)
Closed 2 months ago.
I encountered a program where I had to append one dictionary into another, and I was unable to do it because I could not use indexing in dictionary so I wanted to know what the possible ways are I could do it
This question already has answers here:
Set of floating point numbers
(3 answers)
What is the best way to compare floats for almost-equality in Python?
(18 answers)
Checking for NaN presence in a container
(2 answers)
Closed 1 year ago.
The set function in Python relies on the existence of a robust equality operator existing on the elements given to set.
Suppose we had a list of floating point numbers, xs, and we called set(xs). How will set compare the elements of xs? Will it check to see if two elements are within machine epsilon, or will it perform bitwise equality?
This question already has answers here:
How do I create an empty array and then append to it in NumPy?
(15 answers)
Closed 3 years ago.
I need to create an empty nd-array in python without zeros or ones functions looks like in c++ with this command for array 3*4 for integers:
int x[3][4]
Please help me
Numpy has a function for that. empty