文件在jupyter笔记本上传但无法访问

Question

即使文件成功上传，我也不确定为什么我可以在Jupyter笔记本中看到上传文件的前5行：

import io
from IPython.display import display
import fileupload

def _upload():

    _upload_widget = fileupload.FileUploadWidget()

    def _cb(change):
        decoded = io.StringIO(change['owner'].data.decode('utf-8'))
        filename = change['owner'].filename
        print('Uploaded `{}` ({:.2f} kB)'.format(
            filename, len(decoded.read()) / 2 **10))

    _upload_widget.observe(_cb, names='data')
    display(_upload_widget)

uploaded_file = _upload()
Uploaded `plot.R` (3.00 kB)
%%bash
pwd
head -5 uploaded_file
head -5 "/home/jalal/plot.R"
head -5 plot.R
%%bash

pwd

head -5 uploaded_file

head -5 "/home/jalal/plot.R"

head -5 plot.R

/home/jalal

head: cannot open ‘uploaded_file’ for reading: No such file or directory
head: cannot open ‘/home/jalal/plot.R’ for reading: No such file or directory
head: cannot open ‘plot.R’ for reading: No such file or directory

我也尝试过这个：

_upload

然后

head -5 filename

我收到此错误：

head: cannot open ‘filename’ for reading: No such file or directory