ImportError: No module named matplotlib.pyplot

Traceback (most recent call last):  File "./faster_rcnn/train_net.py", line 23, in <module>    from lib.fast_rcnn.train import get_training_roidb, train_net  File "./faster_rcnn/../lib/__init__.py", line 1, in <module>    import fast_rcnn  File "./faster_rcnn/../lib/fast_rcnn/__init__.py", line 10, in <module>    from . import test  File "./faster_rcnn/../lib/fast_rcnn/test.py", line 9, in <module>    import matplotlib.pyplot as pltImportError: No module named matplotlib.pyplot

解决方法：

执行

sudo yum install python-matplotlib