[Tutor] Dictionary to variable copy

[sunil tech]

*Can i copy the content if a dictionary in to another variable, with out
any link between the dictionary  the variable?

if so, please teach.
*
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Re: [Tutor] Dictionary to variable copy

[Timo]

Op 08-12-11 10:03, sunil tech schreef:
/Can i copy the content if a dictionary in to another variable, with 
out any link between the dictionary  the variable?

/

Have a look at the copy module [1], or use the builtin dict.copy() method.

Cheers,
Timo

[1] http://docs.python.org/library/copy.html#module-copy


/
if so, please teach.
/


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Re: [Tutor] Dictionary to variable copy

[Alan Gauld]

On 08/12/11 09:03, sunil tech wrote:

/Can i copy the content if a dictionary in to another variable, with out
any link between the dictionary  the variable?

if so, please teach.


Yes, but they will both refer to the same object.
But the two references will be entirely independant:

D = {1:2,3:4}
d = D[1]   # both d and D[1] reference 2

D[1] = 42  # d still refers to 2

del(D) # d still refers to 2

Is that what you mean?

Or do you wantbto make a clone of the value so that you
can change it without changing the original?

In that case you can use several techniques depending on object type. 
Generically use copy or deepcopy.


HTH
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/

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