BUG: Work-around openpyxl-2.1.0 NumberFormat removal
See #8342. This patch should allow all tests to pass with any supported openpyxl v1, and with openpyxl 2.1.0. Consider this an interim measure, not a complete fix.

ok!

let me know when green (then will leave the issue open). If you have a more complete fix later can merge (other wise can simply document / put in some versioning checks)
 @neirbowj saw your comment. I'll watch for the green. Have a nice flight!
 @neirbowj - thanks for taking the time to work on this fix! I was really
hoping it would be a one-line fix-the-import kind of thing but I'm glad we
can still get openpyxl to work

On Mon, Sep 22, 2014 at 7:47 AM, jreback notifications@github.com wrote:

> @neirbowj https://github.com/neirbowj saw your comment. I'll watch for
> the green. Have a nice flight!
> 
> —
> Reply to this email directly or view it on GitHub
> https://github.com/pydata/pandas/pull/8352#issuecomment-56383922.
 closing in favor of #8356 
