Test case:
import array
array.array('L', [0])
# x.itemsize == 8 rather than 4
This works fine (returns 4) under Windows Python 3.7.3 64-bit build.
Under Ubuntu; Python 2.7.15rc1, 3.6.5, 3.70b3 64-bit this returns 8.
Documentation at https://docs.python.org/3/library/array.html explicitly states
'L' is for size 4.
It impacts all uses types of array (e.g. reading from byte strings).
The struct module is a little different:
import struct
x = struct.pack('L', 0)
# len(x) ===8 rather than 4
This can be worked around by using '=L' - which is not well documented - so
this maybe a doc issue.
Wanted to post here for comments before opening a bug at
https://bugs.python.org/
Is anyone seeing this under Debian/Ubuntu?
Chris
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