Emile van Sebille, 10.01.2011 18:42:
On 1/10/2011 9:23 AM bob gailer said...
On 1/10/2011 11:51 AM, Emile van Sebille wrote:
well, not predictably unless you understand the specifics of the
implementation you're running under.
>>> from string import letters
>>> longstring = letters*100
>>> otherstring = letters*100
>>> id(longstring)
12491608
>>> id (otherstring)
12100288
>>> shortstring = letters[:]
>>> id(letters)
11573952
>>> id(shortstring)
11573952
>>>
In my experiment I found that using * to replicate gave different
results than using the exact literal. That is why in the program I
posted I used the equivalent of eval("'" + letters*n + "'") which gives
different results than eval("letters*n")!
Hence, not predictably.
I also found it particularly interesting that an explicit copy didn't:
shortstring = letters[:]
There's no need to copy an immutable object.
Stefan
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