%run 在 Jupyter Notebook 中只工作一次

如何解决%run 在 Jupyter Notebook 中只工作一次

我在同一个文件夹中打开了两个 Jupyter 笔记本：functions.ipynb 和 preprocessing.ipynb。
在 functions.ipynb 中，我定义了一系列函数，我将在另一个函数中调用这些函数。

在 preprocessing.ipynb 的第一个单元格中执行

%run 'functions.ipynb'

它工作得很好。但是，如果我再次运行同一个单元格，则会出现此错误：

---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
~/anaconda3/envs/tensorflow2_p36/lib/python3.6/site-packages/IPython/core/magics/execution.py in run(self,parameter_s,runner,file_finder)
    696             fpath = arg_lst[0]
--> 697             filename = file_finder(fpath)
    698         except IndexError:

~/anaconda3/envs/tensorflow2_p36/lib/python3.6/site-packages/IPython/utils/path.py in get_py_filename(name,force_win32)
    108     else:
--> 109         raise IOError('File `%r` not found.' % name)
    110 

OSError: File `'functions.ipynb.py'` not found.

During handling of the above exception,another exception occurred:

Exception                                 Traceback (most recent call last)
<ipython-input-2-330907dc0fe2> in <module>
----> 1 get_ipython().run_line_magic('run',"'functions.ipynb'")

~/anaconda3/envs/tensorflow2_p36/lib/python3.6/site-packages/IPython/core/interactiveshell.py in run_line_magic(self,magic_name,line,_stack_depth)
   2324                 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
   2325             with self.builtin_trap:
-> 2326                 result = fn(*args,**kwargs)
   2327             return result
   2328 

<decorator-gen-59> in run(self,file_finder)

~/anaconda3/envs/tensorflow2_p36/lib/python3.6/site-packages/IPython/core/magic.py in <lambda>(f,*a,**k)
    185     # but it's overkill for just that one bit of state.
    186     def magic_deco(arg):
--> 187         call = lambda f,**k: f(*a,**k)
    188 
    189         if callable(arg):

~/anaconda3/envs/tensorflow2_p36/lib/python3.6/site-packages/IPython/core/magics/execution.py in run(self,file_finder)
    706             if os.name == 'nt' and re.match(r"^'.*'$",fpath):
    707                 warn('For Windows,use double quotes to wrap a filename: %run "mypath\\myfile.py"')
--> 708             raise Exception(msg)
    709         except TypeError:
    710             if fpath in sys.Meta_path:

Exception: File `'functions.ipynb.py'` not found.

我真的不明白为什么这段代码只运行一次。
我在 Amazon SageMaker 中使用 Python 3.6

解决方法

不看这两个文件的内容很难回答，但我猜 functions.ipynb 更改了当前工作目录，这会中断第二次运行。