Question

当尝试使用pyplot绘制图形时，我运行以下代码：

from matplotlib import pyplot as plt

x = [6, 5, 4]
y = [3, 4, 5]

plt.plot(x, y)
plt.show()

这会返回以下错误：

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-3-59955f73b463> in <module>()
      4 y = [3, 4, 5]
      5 
----> 6 plt.plot(x, y)
      7 plt.show()

/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.pyc in plot(*args, **kwargs)
   3304 @_autogen_docstring(Axes.plot)
   3305 def plot(*args, **kwargs):
-> 3306     ax = gca()
   3307     # Deprecated: allow callers to override the hold state
   3308     # by passing hold=True|False

/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.pyc in gca(**kwargs)
    948     matplotlib.figure.Figure.gca : The figure's gca method.
    949     """
--> 950     return gcf().gca(**kwargs)
    951 
    952 # More ways of creating axes:

/usr/local/lib/python2.7/site-packages/matplotlib/figure.pyc in gca(self, **kwargs)
   1367 
   1368         # no axes found, so create one which spans the figure
-> 1369         return self.add_subplot(1, 1, 1, **kwargs)
   1370 
   1371     def sca(self, a):

/usr/local/lib/python2.7/site-packages/matplotlib/figure.pyc in add_subplot(self, *args, **kwargs)
   1019                     self._axstack.remove(ax)
   1020 
-> 1021             a = subplot_class_factory(projection_class)(self, *args, **kwargs)
   1022 
   1023         self._axstack.add(key, a)

/usr/local/lib/python2.7/site-packages/matplotlib/axes/_subplots.pyc in __init__(self, fig, *args, **kwargs)
     71 
     72         # _axes_class is set in the subplot_class_factory
---> 73         self._axes_class.__init__(self, fig, self.figbox, **kwargs)
     74 
     75     def __reduce__(self):

/usr/local/lib/python2.7/site-packages/matplotlib/axes/_base.pyc in __init__(self, fig, rect, facecolor, frameon, sharex, sharey, label, xscale, yscale, axisbg, **kwargs)
    527 
    528         # this call may differ for non-sep axes, e.g., polar
--> 529         self._init_axis()
    530         if axisbg is not None and facecolor is not None:
    531             raise TypeError('Both axisbg and facecolor are not None. '

/usr/local/lib/python2.7/site-packages/matplotlib/axes/_base.pyc in _init_axis(self)
    620     def _init_axis(self):
    621         "move this out of __init__ because non-separable axes don't use it"
--> 622         self.xaxis = maxis.XAxis(self)
    623         self.spines['bottom'].register_axis(self.xaxis)
    624         self.spines['top'].register_axis(self.xaxis)

/usr/local/lib/python2.7/site-packages/matplotlib/axis.pyc in __init__(self, axes, pickradius)
    674         self._minor_tick_kw = dict()
    675 
--> 676         self.cla()
    677         self._set_scale('linear')
    678 

/usr/local/lib/python2.7/site-packages/matplotlib/axis.pyc in cla(self)
    758         self._set_artist_props(self.label)
    759 
--> 760         self.reset_ticks()
    761 
    762         self.converter = None

/usr/local/lib/python2.7/site-packages/matplotlib/axis.pyc in reset_ticks(self)
    769         # define 1 so properties set on ticks will be copied as they
    770         # grow
--> 771         cbook.popall(self.majorTicks)
    772         cbook.popall(self.minorTicks)
    773 

AttributeError: 'module' object has no attribute 'popall'

我的matplotlib一直运行良好，但是昨天我使用自制程序和pip重新安装后出现了这个错误。我正在运行以下内容：

OS: Mac OS Sierra 10.12.5
Python: 2.7.13
Matplotlib: 2.0.2

我已经尝试过重新完成matplotlib和python的重新安装，但仍然遇到同样的错误。我也尝试过多个编辑器（Jupiter，Sublime，Terminal）。

任何帮助都将非常感谢！

Answer 1

我有这个确切的错误，在我的情况下，结果是pip和conda都安装了matplotlib的副本。在一个混合的＆＃39; pip用于填补Anaconda空白的环境，pip可以自动安装升级到您要安装的软件包的（已安装的）依赖项，从而创建重复。

为此进行测试：

$ conda list matplotlib
# packages in environment at /home/ec2-user/anaconda3:
# 
matplotlib                2.0.2               np113py35_0
matplotlib                2.1.1                     <pip>

问题！修正：

$ pip uninstall matplotlib

强制matplotlib升级到pip版本可能是一个好主意：

$ conda install matplotlib=2.1.1

Answer 2

我已经解决了我的问题，虽然我不完全确定为什么这解决了它。

我使用pip uninstall matplotlib删除了python安装，并更新了我的~/.zshrc和~/.bash_profile路径以包含：

自制：

export PATH=/usr/local/bin:$PATH

的Python：

export PATH=/usr/local/share/python:$PATH

这解决了这个问题。我猜这个问题是由于安装了两个matplotlib并且路径在~/.bash_proile而不是~/.zshrc引起的。

Answer 3

我遇到过类似的问题我所做的就是尝试使用

升级我的matplotlib

pip install -U matplotlib

然后重新打开anaconda以查看其工作情况

Matplotlib AttributeError：'module'对象没有属性'popall'

3 个答案: