循环导入在导入 tkinter 时生成 AttributeError

Question

我有一个带有 python 3.9.1 的 Anaconda 环境，当我尝试导入 tkinter 时收到以下错误消息。

Traceback (most recent call last):
  File "/Users/isevilla/opt/miniconda3/envs/lab/lib/python3.9/site-packages/IPython/core/interactiveshell.py", line 3418, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-2-537f0be70a2b>", line 1, in <module>
    runfile('/Users/isevilla/Documents/Tkinter playground/tkinter.py', wdir='/Users/isevilla/Documents/Tkinter playground')
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydev_bundle/pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "/Users/isevilla/Documents/Tkinter playground/tkinter.py", line 1, in <module>
    import tkinter as tk
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 21, in do_import
    module = self._system_import(name, *args, **kwargs)
  File "/Users/isevilla/Documents/Tkinter playground/tkinter.py", line 4, in <module>
    root = tk.Tk()
AttributeError: partially initialized module 'tkinter' has no attribute 'Tk' (most likely due to a circular import)

当我尝试运行以下简单代码时弹出错误：

import tkinter as tk


root = tk.Tk()

myLabel = tk.Label(root, text='Hello world')
myLabel.pack()

root.mainLoop()

有人知道为什么会发生这种情况，我该如何解决？

Answer 1

问题是您将文件命名为 Tkinter.py。当您进行导入时，python 会看到该文件并尝试导入它而不是 Tkinter 库。

重命名您的文件，并确保删除 Tkinter.pyc（如果存在）。