重新安装

Question

我正在尝试将tkinter与matplotlib一起使用。

当我尝试这样做时，我收到以下错误。我已经阅读了每一个信号线程和我可以找到的文章，这些都已经说到了pip uninstall然后pip重新安装matplotlib，我做了很多次没有快乐。

这是我的结局

> 14, in <module>
> line for line in traceback.format_stack()
> matplotlib.use("TkAgg")
      matplotlib.use("TkAgg")
<

以下是我要导入的内容

import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figure

我真的很感激任何关于此的建议。

完整错误消息在

下面

    n [1]: runfile('C:/Users/carl-/Desktop/Programing/Projects/Kitties                             
    Mastermind/SandBox.py', 
    wdir='C:/Users/carl-/Desktop/Programing/Projects/Kitties Mastermind')
    C:/Users/carl-/Desktop/Programing/Projects/Kitties 
    Mastermind/SandBox.py:2: UserWarning: 
    This call to matplotlib.use() has no effect because the backend has 
    already
    been chosen; matplotlib.use() must be called *before* pylab, 
    matplotlib.pyplot,
    or matplotlib.backends is imported for the first time.

    The backend was *originally* set to 
    'module://ipykernel.pylab.backend_inline' by the following code:
      File "C:\Users\carl-\Anaconda3\lib\site-
    packages\spyder\utils\ipython\start_kernel.py", line 245, in <module>
        main()
      File "C:\Users\carl-\Anaconda3\lib\site-
    packages\spyder\utils\ipython\start_kernel.py", line 229, in main
        kernel.initialize()
      File "<decorator-gen-124>", line 2, in initialize
      File "C:\Users\carl-\Anaconda3\lib\site-
    packages\traitlets\config\application.py", line 87, in catch_config_error
        return method(app, *args, **kwargs)
      File "C:\Users\carl-\Anaconda3\lib\site-
    packages\ipykernel\kernelapp.py", line 464, in initialize
        self.init_code()
      File "C:\Users\carl-\Anaconda3\lib\site-
    packages\IPython\core\shellapp.py", line 260, in init_code
        self._run_exec_lines()
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\shellapp.py", line 286, in _run_exec_lines
        self.shell.run_cell(line, store_history=False)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\ipykernel\zmqshell.py", line 533, in run_cell
        return super(ZMQInteractiveShell, self).run_cell(*args, **kwargs)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\interactiveshell.py", line 2698, in run_cell
        interactivity=interactivity, compiler=compiler, result=result)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\interactiveshell.py", line 2808, in run_ast_nodes
        if self.run_code(code, result):
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\interactiveshell.py", line 2862, in run_code
        exec(code_obj, self.user_global_ns, self.user_ns)
      File "<ipython-input-1-e27d371d6baa>", line 1, in <module>
        get_ipython().magic('matplotlib inline')
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\interactiveshell.py", line 2146, in magic
        return self.run_line_magic(magic_name, magic_arg_s)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\interactiveshell.py", line 2067, in 
      run_line_magic
        result = fn(*args,**kwargs)
      File "<decorator-gen-108>", line 2, in matplotlib
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\magic.py", line 187, in <lambda>
        call = lambda f, *a, **k: f(*a, **k)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\magics\pylab.py", line 99, in matplotlib
        gui, backend = self.shell.enable_matplotlib(args.gui)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\interactiveshell.py", line 2930, in 
      enable_matplotlib
        pt.activate_matplotlib(backend)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\IPython\core\pylabtools.py", line 307, in activate_matplotlib
        matplotlib.pyplot.switch_backend(backend)
      File "C:\Users\carl-\Anaconda3\lib\site-packages\matplotlib\pyplot.py", 
      line 232, in switch_backend
        matplotlib.use(newbackend, warn=False, force=True)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\matplotlib\__init__.py", line 1305, in use
        reload(sys.modules['matplotlib.backends'])
      File "C:\Users\carl-\Anaconda3\lib\importlib\__init__.py", line 166, in 
      reload
        _bootstrap._exec(spec, module)
      File "C:\Users\carl-\Anaconda3\lib\site-
      packages\matplotlib\backends\__init__.py", line 14, in <module>
        line for line in traceback.format_stack()


      matplotlib.use("TkAgg")

Answer 1

在Spyder中使用IPython，在实际输入任何代码之前，将选择使用中的后端。因此，更改后端需要更改spyder设置中的自动设置。

此处所做的任何更改都需要重新启动Spyder。