pydata/pandas — pull request #5627 by y-p (2013-12-01 13:12:17+00:00)
Title: BUG/TST: importing util.clipboard shouldnt print to stdout (nosetests)

```
$ nosetests
/usr/bin/xclip <<<< raise your hand if you've been ignoring this for 6 months
...........
```

`os.system` nastiness. The vbench package has similar problems.

https://github.com/pydata/pandas/pull/3848