New submission from Serhiy Storchaka:
This is one of most annoying things in Python to me. When you want accept any
bytes-like object in you bytes-processing function you need special case empty
input.
def foo(data):
data = memoryview(data)
if data:
data = data.cast('B')
else:
data = b''
You can't use just memoryview(data).cast('B') because it doesn't work for empty
data.
>>> memoryview(b'').cast('b')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: memoryview: cannot cast view with zeros in shape or strides
It would be very nice to allow cast() for empty views.
----------
components: Interpreter Core
messages: 197655
nosy: pitrou, serhiy.storchaka, skrah, teoliphant
priority: normal
severity: normal
status: open
title: Allow memoryview.cast() for empty views
type: enhancement
versions: Python 3.4
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue19014>
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