终于编译过去，结果呢？import caffe，出错：
quantum6@gh4ai:~/gh-install/caffe/python$ python3 Python 3.5.5 (default, Oct 28 2018, 15:55:43) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import caffe Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/quantum6/gh-install/caffe/python/caffe/__init__.py", line 1, in <module> from .pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver, NCCL, Timer File "/home/quantum6/gh-install/caffe/python/caffe/pycaffe.py", line 15, in <module> import caffe.io File "/home/quantum6/gh-install/caffe/python/caffe/io.py", line 2, in <module> import skimage.io File "/usr/local/lib/python3.5/site-packages/skimage/__init__.py", line 177, in <module> from .data import data_dir File "/usr/local/lib/python3.5/site-packages/skimage/data/__init__.py", line 15, in <module> from ..io import imread, use_plugin File "/usr/local/lib/python3.5/site-packages/skimage/io/__init__.py", line 15, in <module> reset_plugins() File "/usr/local/lib/python3.5/site-packages/skimage/io/manage_plugins.py", line 95, in reset_plugins _load_preferred_plugins() File "/usr/local/lib/python3.5/site-packages/skimage/io/manage_plugins.py", line 75, in _load_preferred_plugins _set_plugin(p_type, preferred_plugins['all']) File "/usr/local/lib/python3.5/site-packages/skimage/io/manage_plugins.py", line 87, in _set_plugin use_plugin(plugin, kind=plugin_type) File "/usr/local/lib/python3.5/site-packages/skimage/io/manage_plugins.py", line 258, in use_plugin _load(name) File "/usr/local/lib/python3.5/site-packages/skimage/io/manage_plugins.py", line 302, in _load fromlist=[modname]) File "/usr/local/lib/python3.5/site-packages/skimage/io/_plugins/matplotlib_plugin.py", line 4, in <module> from mpl_toolkits.axes_grid1 import make_axes_locatable File "/usr/local/lib/python3.5/site-packages/mpl_toolkits/axes_grid1/__init__.py", line 1, in <module> from . import axes_size as Size File "/usr/local/lib/python3.5/site-packages/mpl_toolkits/axes_grid1/axes_size.py", line 15, in <module> from matplotlib.axes import Axes File "/usr/local/lib/python3.5/site-packages/matplotlib/axes/__init__.py", line 1, in <module> from ._subplots import * File "/usr/local/lib/python3.5/site-packages/matplotlib/axes/_subplots.py", line 6, in <module> from matplotlib.axes._axes import Axes File "/usr/local/lib/python3.5/site-packages/matplotlib/axes/_axes.py", line 20, in <module> import matplotlib.dates as _ # <-registers a date unit converter File "/usr/local/lib/python3.5/site-packages/matplotlib/dates.py", line 144, in <module> from dateutil.rrule import (rrule, MO, TU, WE, TH, FR, SA, SU, YEARLY, File "/usr/local/lib/python3.5/site-packages/dateutil/rrule.py", line 55 raise ValueError, "Can't create weekday with n == 0" ^ SyntaxError: invalid syntax
面对这样的错误，人们不禁要问，这究竟是……别问了，赶紧上网查：
pip install matplotlib --upgrade
感谢党，感谢国家，感谢高手……终于可以import了。
