Opened 5 months ago
Closed 5 months ago
#26914 closed enhancement (fixed)
py3: fixing doctests in elliptic_curves/cm.py
Reported by:  chapoton  Owned by:  

Priority:  major  Milestone:  sage8.6 
Component:  python3  Keywords:  
Cc:  tscrim, cremona  Merged in:  
Authors:  Frédéric Chapoton  Reviewers:  John Cremona 
Report Upstream:  N/A  Work issues:  
Branch:  5403ce7 (Commits)  Commit:  5403ce7894ea03db25c8fcf23ae156993b54c4cf 
Dependencies:  Stopgaps: 
Description
by more sorting of discriminants
Change History (8)
comment:1 Changed 5 months ago by
 Branch set to u/chapoton/26914
 Commit set to 9d5f2f9ad4b311b8775031624c5fc0b54c124bbf
 Status changed from new to needs_review
comment:2 Changed 5 months ago by
All looks fine apart from this:
 dlist = sum([v for h, v in iteritems(discriminants_with_bounded_class_number(K.degree(), proof=proof))], []) + dlist = sorted(Df for v in discriminants_with_bounded_class_number(K.degree(), proof=proof).values() for Df in v)
whose syntax looks suspicious to me.
comment:3 followup: ↓ 4 Changed 5 months ago by
Hmm. Why suspicious ? The "sorted" is the only real change we are making here. If my understanding of the mathematics involved is ok, this should not be a problem.
Or maybe you are troubled by the double for ? This is a perfectly valid python syntax. We can chain the "for", the second one depending on the argument of the first. Here the effect is to flatten a list of lists.
comment:4 in reply to: ↑ 3 Changed 5 months ago by
Replying to chapoton:
Hmm. Why suspicious ? The "sorted" is the only real change we are making here. If my understanding of the mathematics involved is ok, this should not be a problem.
Or maybe you are troubled by the double for ? This is a perfectly valid python syntax. We can chain the "for", the second one depending on the argument of the first. Here the effect is to flatten a list of lists.
Thanks for the lesson! I had never seen a double for so thought it was a mistake (and did not have time to check).
comment:5 Changed 5 months ago by
 Commit changed from 9d5f2f9ad4b311b8775031624c5fc0b54c124bbf to 5403ce7894ea03db25c8fcf23ae156993b54c4cf
Branch pushed to git repo; I updated commit sha1. New commits:
5403ce7  trac 26914 fix pyflakes warning

comment:6 Changed 5 months ago by
green bot, ready for review
comment:7 Changed 5 months ago by
 Reviewers set to John Cremona
 Status changed from needs_review to positive_review
comment:8 Changed 5 months ago by
 Branch changed from u/chapoton/26914 to 5403ce7894ea03db25c8fcf23ae156993b54c4cf
 Resolution set to fixed
 Status changed from positive_review to closed
New commits:
py3: fixes in elliptic_curves/cm.py