Don't add rowspan/colspan if it's 1.

[QuLogic]

Just a small thing I noticed in a footnote here. Probably can't do much about the extra classes, but rowspan/colspan seem like easy fixes to save a few bytes per row/col and it's already done in the other code path.

Don't really know if this is major enough to deserve a what's new entry.

• closes #xxxx - N/A
• tests added / passed
• passes git diff upstream/master | flake8 --diff
• whatsnew entry

[codecov-io]

Codecov Report

Merging #15403 into master will decrease coverage by -0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #15403      +/-   ##
==========================================
- Coverage   90.37%   90.37%   -0.01%     
==========================================
  Files         135      135              
  Lines       49454    49463       +9     
==========================================
+ Hits        44694    44702       +8     
- Misses       4760     4761       +1

Impacted Files	Coverage Δ
pandas/formats/style.py	96.17% <100%> (+0.11%)	✅
pandas/core/common.py	91.02% <ø> (-0.34%)	❌

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[TomAugspurger]

@QuLogic thanks. Could you check and see if we have any tests of colspan > 1 when there's a MultiIndex in the columns? I see we have one for rowspan > 1 with a MI in the index, but didn't see one for the columns.

[QuLogic]

I'm not sure where it is, but codecov says it's hitting both colspan > 1 and rowspan > 1.

[jreback]

is there any visible effect of this? You can add a whatsnew entry with this PR number just to document. Maybe under Other Enhancements. lgtm. otherwise.

[TomAugspurger]

It should be invisible to the user (other than the tables being costing fewer KB)

…

On Thu, Feb 16, 2017 at 8:30 AM, Jeff Reback ***@***.***> wrote: is there any visible effect of this? You can add a whatsnew entry with this PR number just to document. Maybe under Other Enhancements. lgtm. otherwise. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#15403 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABQHIjzxvYx50ntO5WWkkLn3TKQnmUgfks5rdF2MgaJpZM4MBE3l> .

[jreback]

thanks @QuLogic