Mac下安装from matplotlib import pyplot或者 import matplotlib.pyplot as plt报错

>>>from matplotlib import pyplot

Traceback (most recent call last):

File "<stdin>", line 1, in <module>

File "/Library/Python/2.7/site-packages/matplotlib/pyplot.py", line 34, in <module>

from matplotlib.figure import Figure, figaspect

File "/Library/Python/2.7/site-packages/matplotlib/figure.py", line 40, in <module>

from matplotlib.axes import Axes, SubplotBase, subplot_class_factory

File "/Library/Python/2.7/site-packages/matplotlib/axes/__init__.py", line 4, in <module>

from ._subplots import *

File "/Library/Python/2.7/site-packages/matplotlib/axes/_subplots.py", line 10, in <module>

from matplotlib.axes._axes import Axes

File "/Library/Python/2.7/site-packages/matplotlib/axes/_axes.py", line 21, in <module>

import matplotlib.dates as _  # <-registers a date unit converter

File "/Library/Python/2.7/site-packages/matplotlib/dates.py", line 126, in <module>

from dateutil.rrule import (rrule, MO, TU, WE, TH, FR, SA, SU, YEARLY,

File "/Library/Python/2.7/site-packages/dateutil/rrule.py", line 16, in <module>

from six.moves import _thread

ImportError: cannot import name _thread

使用sudo pip install matplotlib命令安装的，Dateutil、Six都直接给我安装了最新版本，通过搜索解决方案，发现dateutil版本高了，直接重装2.2解决。

sudo pip uninstall dateutil

sudo pip install dateutil==2.2