Check one array's elements contains in another array

Question

**

labels = ['UNREAD', 'CATEGORY_PERSONAL', 'INBOX']
incomingLabels = ['UNREAD','IMPORTANT' 'CATEGORY_PERSONAL', 'INBOX']

**

labels array is static array. How do I check incoming array contains all elemnts of labels array.

My attempts

intersectionOfTwoArrays = list(set(incomingLabels) & set(labels))
if np.array_equal(labels, intersectionOfTwoArrays): 
   //Do somthing

that attempt not succed because intersectionOfTwoArrays's not ordered same as labels array

Can anyone help me on that?

labels = ['UNREAD', 'CATEGORY_PERSONAL', 'INBOX'] intersectionOfTwoArrays = ['UNREAD', 'INBOX','CATEGORY_PERSONAL'] because of that if condition fails — Januka samaranyake
– Januka samaranyake, Commented Oct 21, 2016 at 8:57
I still have no idea what you mean, what does the order have to do with what you are trying to do? — Padraic Cunningham
– Padraic Cunningham, Commented Oct 21, 2016 at 8:58
You mean set(incomingLabels) >= set(labels)? array_equal does an elementwise comparison. Are you actually using numpy arrays? — Padraic Cunningham
– Padraic Cunningham, Commented Oct 21, 2016 at 9:00

Skycc · Accepted Answer · 2016-10-21 09:10:42Z

12

convert both list into set before doing array_equal to avoid order issue

labels = ['UNREAD', 'CATEGORY_PERSONAL', 'INBOX']
incomingLabels = ['UNREAD','IMPORTANT', 'CATEGORY_PERSONAL', 'INBOX']
intersectionOfTwoArrays = list(set(incomingLabels) & set(labels))

if np.array_equal(set(labels), set(intersectionOfTwoArrays)): 
    # Do somthing 
    print "match"

alternatively, you could using set method issubset

labels = ['UNREAD', 'CATEGORY_PERSONAL', 'INBOX']
incomingLabels = ['UNREAD','IMPORTANT', 'CATEGORY_PERSONAL', 'INBOX']

if set(labels).issubset(set(incomingLabels)):
    # issubset true, do something
    print "match"

edited Oct 21, 2016 at 9:10

answered Oct 21, 2016 at 8:54

Skycc

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