Repository navigation
itertools.islice not accepting np.int64 #75280
Description
| BPO | 31097 |
|---|---|
| Nosy | @rhettinger, @terryjreedy, @mdickinson, @braaannigan |
| Superseder |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
Show more details
GitHub fields:
assignee = None
closed_at = <Date 2017-08-05.03:02:31.085>
created_at = <Date 2017-08-01.13:23:06.701>
labels = ['type-bug', 'library']
title = 'itertools.islice not accepting np.int64'
updated_at = <Date 2017-08-05.03:07:56.748>
user = 'https://github.com/braaannigan'bugs.python.org fields:
activity = <Date 2017-08-05.03:07:56.748>
actor = 'terry.reedy'
assignee = 'none'
closed = True
closed_date = <Date 2017-08-05.03:02:31.085>
closer = 'terry.reedy'
components = ['Library (Lib)']
creation = <Date 2017-08-01.13:23:06.701>
creator = 'braaannigan'
dependencies = []
files = []
hgrepos = []
issue_num = 31097
keywords = []
message_count = 6.0
messages = ['299617', '299618', '299620', '299625', '299628', '299769']
nosy_count = 4.0
nosy_names = ['rhettinger', 'terry.reedy', 'mark.dickinson', 'braaannigan']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '30537'
type = 'behavior'
url = 'https://bugs.python.org/issue31097'
versions = ['Python 3.6']
Activity
braaannigan commentedon Aug 1, 2017
The error arises when this code is used:
itertools.islice( [3, 4, 5], np.int64(2) )
but not with this
itertools.islice([3,4,5], 2)
rhettinger commentedon Aug 1, 2017
See http://bugs.python.org/issue30537
braaannigan commentedon Aug 1, 2017
Thanks Ray. The use case is here:
https://stackoverflow.com/questions/45356718/saving-matplotlib-animation-leads-to-error/45438057#45438057
I'm going to suggest a workaround in matplotlib for the moment. Changing type in this use case shouldn't be a big issue, it only happens once for each animation created.
mdickinson commentedon Aug 1, 2017
That actually looks as though it may be worth a bug report to the matplotlib folks.
braaannigan commentedon Aug 1, 2017
Hi Mark - I've done that here:
matplotlib/matplotlib#8973
Liam
terryjreedy commentedon Aug 5, 2017
LB, an exception is a graceful shutdown, not a crash. A crash is a seg fault, core dump, or an OS message 'Your app has stopped unexpectedly'.
In bpo-30537, the exception was regarded as expected, not a bug, and changing islice to accept np ints was regarded as an enhancement, and therefore limited to 3.7