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From: Paul Appleby <pap@nowhere.invalid>
Newsgroups: comp.lang.python
Subject: So what's happening here?
Date: Fri, 5 Jun 2015 12:46:22 +0000 (UTC)
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I saw somewhere on the net that you can copy a list with slicing. So 
what's happening when I try it with a numpy array?

>>> a = numpy.array([1,2,3])
>>> b = a[:]
>>> a is b
False
>>> b[1] = 9
>>> a
array([1, 9, 3])