python - 属性错误 : 'Cycler' object has no attribute 'change_key'

Question

我正在尝试在 Ubuntu 上导入 matplotlib。我从源代码重新安装了 matplotlib，因为我无法使用 TkAgg 后端。现在我面临一个我无法解决的新问题，也无法在任何地方找到解决方案。我正在使用 Python 3.5。 当我运行一个简单的导入时，我看到这个错误:

Traceback (most recent call last):
  File "plot_test.py", line 17, in <module>
    import matplotlib
  File "/usr/local/lib/python3.5/site-packages/matplotlib-2.0.0b3+1955.g888bf17-py3.5-linux-x86_64.egg/matplotlib/__init__.py", line 1174, in <module>
    rcParams = rc_params()
  File "/usr/local/lib/python3.5/site-packages/matplotlib-2.0.0b3+1955.g888bf17-py3.5-linux-x86_64.egg/matplotlib/__init__.py", line 1017, in rc_params
    return rc_params_from_file(fname, fail_on_error)
  File "/usr/local/lib/python3.5/site-packages/matplotlib-2.0.0b3+1955.g888bf17-py3.5-linux-x86_64.egg/matplotlib/__init__.py", line 1149, in rc_params_from_file
    config = RcParams([(key, default) for key, (default, _) in iter_params
  File "/usr/local/lib/python3.5/site-packages/matplotlib-2.0.0b3+1955.g888bf17-py3.5-linux-x86_64.egg/matplotlib/__init__.py", line 901, in __init__
    self[k] = v
  File "/usr/local/lib/python3.5/site-packages/matplotlib-2.0.0b3+1955.g888bf17-py3.5-linux-x86_64.egg/matplotlib/__init__.py", line 918, in __setitem__
    cval = self.validate[key](val)
  File "/usr/local/lib/python3.5/site-packages/matplotlib-2.0.0b3+1955.g888bf17-py3.5-linux-x86_64.egg/matplotlib/rcsetup.py", line 844, in validate_cycler

    cycler_inst.change_key(prop, norm_prop)
AttributeError: 'Cycler' object has no attribute 'change_key'

我认为这可能与从 rcsetup.py 导入循环程序有关，因为有一条评论说:

# Don't let the original cycler collide with our validating cycler

所以无论这是什么原始版本，都在与他们的循环仪发生碰撞？

我该如何解决这个问题？有什么建议么？谢谢!

Answer 1

刚刚检查了 cycler 的版本，它已经过时了。只需更新 cycler 即可

sudo pip3 install --upgrade cycler

或

sudo -H python3 -m pip install --upgrade cycler.