Check python array for values greater than a threshold

Question

I want to check if any value in the array is greater than a certain threshold,…. do something

But it seems the if loop in the following code does not work. It does not print ‘yes’ in the if loop even the conditions were satisfied. Any idea why?

import random
import numpy as np

data = []
for i in range(0,10):
    val = random.randint(0,110)
    data.append(val)

data_np = np.array(data)


if all(i>=100 for i in data_np):
    print('yes')

print(data_np)

Asked By: jkmp

||

Source

Answer 1

replace all to any.

if any(i>=100 for i in data_np):

more information :
you want to know any number not all numbers is greater or not.
so you should use ,any, founction instead of ,all,.

Answered By: seyed abas alavi

Answer 2

For a numpy array, use the .any method on a mask instead of looping through the array:

data_np = np.random.randint(0, 110, 10)
if (data_np >= 100).any():
    print('yes')

Answered By: Stuart

Answer 3

import numpy as np 

arr = np.random.randint(0,30,10)
threshold = 20
mask = arr > threshold
print("arr", arr)

if True in mask:
    print("yes, elements above threshold are :", arr[mask])
else:
    print("No elements are above threshold")

Answered By: veeresh d

Check python array for values greater than a threshold

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