New submission from Paul Sokolovsky:
With bytearray, you can do:
>>> bytearray(3)
bytearray(b'\x00\x00\x00')
However, with arrays:
>>> array.array('i', 3)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'int' object is not iterable
Given that int passed as seconf argument is not handled specially in array, I'd
like to propose to make it an initial size of a zero-filled array to create.
This will make it: a) consitent with bytearray; b) efficient for the scenarios
where one needs to pre-create array of given length, pass to some (native)
function to fill in, then do rest of processing. For the latter case, assuming
that both fill-in and further processing is efficient (e.g. done by native
function), the initial array creation becomes a bottleneck.
----------
components: Library (Lib)
messages: 215757
nosy: pfalcon
priority: normal
severity: normal
status: open
title: Cannot efficiently create empty array.array of given size, inconsistency
with bytearray
type: performance
versions: Python 3.4
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue21180>
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