CODEWITHSUNDEEP
pythonnumpy-ndarray
Rohit
Rohit

Reputation: 11

Adding value to array

I want to add values from one array to another array after making some calculation, here I did it using for loop but I want efficient way doing so. Please help me.. thanx

from numpy import *

arr = array([1,2,3,4,5])

arr1 = []

for i in arr:

    arr1.append(i+5)
    
print(arr1)

nArray = array(arr1)

print(nArray)

Output :

[6, 7, 8, 9, 10]

[ 6 7 8 9 10]

Upvotes: 1

Views: 49

Answers (2)

Thomas Saint-Gérand
Thomas Saint-Gérand

Reputation: 86

For a builtin Python list, you can use a list comprehension:

arr1 = [x + 5 for x in arr]

Since you are using a numpy array however, you can just add 5 to the array with:

arr1 = arr + 5

Upvotes: 1

fountainhead
fountainhead

Reputation: 3722

You should have just done:

nArray = arr + 5

Upvotes: 1

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