ImportError("matplotlib requires dateutil")

[skynet21]

I tried installing and running this using Python 2.7. However, I get the following error:

D:\just-dice-bot-aces>cmd /k \python27\python just-dice-bot.py
Traceback (most recent call last):
File "just-dice-bot.py", line 46, in
from matplotlib.figure import Figure # @UnresolvedImport
File "D:\python27\lib\site-packages\matplotlib__init__.py", line 111, in
raise ImportError("matplotlib requires dateutil")
ImportError: matplotlib requires dateutil

[rogeroyer]

Me too.