Message 308124 - Python tracker

Message308124

Author	skrah
Recipients	Massimiliano Culpo, docs@python, skrah, steven.daprano
Date	2017-12-12.12:46:19
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1513082779.44.0.213398074469.issue32288@psf.upfronthosting.co.za>
In-reply-to

Content
Python lists don't implement extended slices, try numpy arrays: >>> import numpy as np >>> x = array([[1,2,3], [4,5,6]]) >>> x[:, 2] array([3, 6]) >>> >>> lst = [[1,2,3], [4,5,6]] >>> lst[:, 2] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: list indices must be integers or slices, not tuple >>> Was there any issue apart from the extended slices?

Content

Python lists don't implement extended slices, try numpy arrays:

>>> import numpy as np
>>> x = array([[1,2,3], [4,5,6]])
>>> x[:, 2]
array([3, 6])
>>> 
>>> lst = [[1,2,3], [4,5,6]]
>>> lst[:, 2]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: list indices must be integers or slices, not tuple
>>> 

Was there any issue apart from the extended slices?

History
Date	User	Action	Args
2017-12-12 12:46:19	skrah	set	recipients: + skrah, steven.daprano, docs@python, Massimiliano Culpo
2017-12-12 12:46:19	skrah	set	messageid: <1513082779.44.0.213398074469.issue32288@psf.upfronthosting.co.za>
2017-12-12 12:46:19	skrah	link	issue32288 messages
2017-12-12 12:46:19	skrah	create