Hi Raashid, On Sat, Aug 2, 2014 at 10:27 AM, rashid bhat <raashidbhatt@gmail.com> wrote:

Hello

The array object on assignment does not create a new object instead it creates a reference to the assigned object ( As expected it should create a new object).

Why do you expect that? If Python were to create a new object at every assignment, it would very quickly use up huge amounts of memory for no good reason, and nobody wants that! Since there's no way to tell which objects you might want a copy of and which ones you definitely don't want copied, it takes more than just an assignment to create a new object. Assignment simply binds the name on the left to the result of the expression on the right: in your example below, that means assigning "bar" to the object bound to "foo". Have a look at http://nedbatchelder.com/text/names.html for a more in-depth explanation. The bottom line is, if you want a copy of an object, you'll have to make it yourself, like so:

...

...

import array foo = array.array('c', 'hello') bar = foo[:] # this notation means "take a slice of the whole thing" bar[0] = '\x00' bar array('c', '\x00ello') foo array('c', 'hello')

Hope this helps, -- Zach

Following code would be enough to prove it

import array

foo = array.array("c", "hello") bar = foo

bar[0] = "\x00"

print foo[0] gives "\x00" output while it should be hello

-- Regards Raashid Bhat