[Python-Dev] re: Tutorial: Brief Introduction to the Standard
Kevin J. Butler
python-kbutler at sabaydi.com
Thu Dec 4 16:27:31 EST 2003
From: Arthur <ajsiegel at optonline.net>
>What is fundamentally wrong with copy(list) as an alternative to list[:]?
Well, copy(list) doesn't contain an emoticon of two beady little eyes
peeking out of a box, for one. ;-)
The opposite question, "What is fundamentally wrong with list[:]..." has
an easy answer:
It takes experience or explanation of slicing to know what it does.
copy(list) is easy even for novices to understand.
When I know my code will be read by people unfamiliar with Python, I
tend to annotate use of
slices something like:
list[:] # copy the list
Python usually makes it easier to avoid sacrificing clarity on the altar
of micro-optimization, but since the slice is the idiomatically correct
way to spell copy(list) in Python, that's the way to write it.
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