find a minimum value in an array of floats
254,452
Solution 1
Python has a min()
built-in function:
>>> darr = [1, 3.14159, 1e100, -2.71828]
>>> min(darr)
-2.71828
Solution 2
If you want to use numpy, you must define darr
to be a numpy array, not a list
:
import numpy as np
darr = np.array([1, 3.14159, 1e100, -2.71828])
print(darr.min())
darr.argmin()
will give you the index corresponding to the minimum.
The reason you were getting an error is because argmin
is a method understood by numpy arrays, but not by Python lists
.
Author by
pjehyun
Updated on June 10, 2020Comments
-
pjehyun almost 4 years
how would one go about finding the minimum value in an array of 100 floats in python? I have tried
minindex=darr.argmin()
andprint darr[minindex]
withimport numpy
(darr is the name of the array)but i get:
minindex=darr.argmin()
AttributeError: 'list' object has no attribute 'argmin'
what might be the problem? is there a better alternative?
thanks in advance