#19895: extend lazy lists: various improvements and generalizations, new
sublists
-------------------------------------+-------------------------------------
Reporter: dkrenn | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: misc | Resolution:
Keywords: | Merged in:
Authors: Daniel Krenn | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/dkrenn/extend_lazy_lists | 3b63c4792714b2e57dda38b6d9a69e2cf663ba94
Dependencies: #16137 | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by dkrenn):
* status: new => needs_review
Comment:
Ticket is ready for reviewing.
At the top there is
{{{
#empty_lazy_list = lazy_list_generic(initial_values=[],
# start=0, stop=0, step=1) # ... does
not work
}}}
which is commented since it does not work. The following workaround is
used:
{{{
empty_lazy_list = lazy_list_generic.__new__(lazy_list_generic)
empty_lazy_list.start = 0
empty_lazy_list.stop = 0
empty_lazy_list.step = 1
empty_lazy_list.cache = []
...
}}}
It simply sets all the attributes manually. Commenting in the "direct
command", one gets
{{{
Traceback (most recent call last):
...
File "/local/dakrenn/sage/7.0.beta3/local/lib/python2.7/site-
packages/sage/combinat/words/morphism.py", line 144, in <module>
from sage.misc.lazy_list import lazy_list
ImportError: cannot import name lazy_list
}}}
Any ideas? (But I am happy with any solution; deleting the commented-out
lines as well)
--
Ticket URL: <http://trac.sagemath.org/ticket/19895#comment:7>
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