```
/usr/local/lib/python2.7/dist-packages/cartopy/examples/arrows.py:21:1: W293 blank line contains whitespace

/usr/local/lib/python2.7/dist-packages/cartopy/examples/arrows.py:34:1: W293 blank line contains whitespace

/usr/local/lib/python2.7/dist-packages/cartopy/examples/arrows.py:38:43: W291 trailing whitespace

/usr/local/lib/python2.7/dist-packages/cartopy/examples/barbs.py:15:80: E501 line too long (87 > 79 characters)

/usr/local/lib/python2.7/dist-packages/cartopy/examples/barbs.py:17:1: W293 blank line contains whitespace

/usr/local/lib/python2.7/dist-packages/cartopy/examples/regridding_arrows.py:27:1: W293 blank line contains whitespace
```