CODEWITHSUNDEEP
python
vegabond
vegabond

Reputation: 251

Multiple variable assignment showing unexpected value

I have these 5 array initialized to empty value by using multiple assignment. I am trying to add a different value in each of those arrays. However it seems all arrays value are showing same values. How is this possible?

Code

arr1=arr2=arr3=arr4=arr5=[]

def test(arr,fruit):
arr.append(fruit)

test(arr1, "Apple")
test(arr2, "Anar")
test(arr3, "Orange")
test(arr4, "Fig")

print(arr1)
print(arr2)
print(arr3)
print(arr4)

Output

['Apple', 'Anar', 'Orange', 'Fig']
['Apple', 'Anar', 'Orange', 'Fig']
['Apple', 'Anar', 'Orange', 'Fig']
['Apple', 'Anar', 'Orange', 'Fig']

Upvotes: 0

Views: 70

Answers (2)

Sheldore
Sheldore

Reputation: 39042

An alternate approach is using list comprehension to do multiple assignment without creating reference to the same list as 

arr1, arr2, arr3, arr4, arr5 = [[] for _ in range(5)]

Upvotes: 2

andreihondrari
andreihondrari

Reputation: 5833

That's because all those variables point to the same array. Instead you want to initialize each one on separate lines:

arr1 = []
arr2 = []
arr3 = []
arr4 = []

Upvotes: 1

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