I can open a jupyter notebook, but I cannot run the notebook with python script in it on my Mac

问题

I have been using jupyter as well as Atom with python for more than a year now. I'm currently using Python 3.7.2 on macOS 10.14. There is no problem running Python from the Terminal and here are the PATH I get after running sys.path:

['', '/Library/Frameworks/Python.framework/Versions/3.7/lib/python37.zip', '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7', '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib-dynload', '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages']

I can open a jupyter notebook in jupyter but for some obscure reason, I cannot run the notebook and there is a red Kernel error on the top right of the page with the following error message when I click on it:

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/web.py", line 1699, in _execute
    result = await result
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 736, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/notebook/services/sessions/handlers.py", line 73, in post
    type=mtype))
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 729, in run
    value = future.result()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 736, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 729, in run
    value = future.result()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 736, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 729, in run
    value = future.result()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado/gen.py", line 209, in wrapper
    yielded = next(result)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/notebook/services/kernels/kernelmanager.py", line 160, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/jupyter_client/manager.py", line 259, in start_kernel
    **kw)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/jupyter_client/manager.py", line 204, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/jupyter_client/launcher.py", line 138, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 775, in __init__
    restore_signals, start_new_session)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 1522, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7'

here is my PATH (obtained after the command: nano ~/.bash_profile)

# Homebrew
export PATH=/usr/local/bin:$PATH

# Setting PATH for Python 3.7
# The original version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.7/bin:${PATH}"
export PATH

# Setting PATH for Python 3.7
# The original version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.7/bin:${PATH}"
export PATH

I already uninstalled all the python installations on my computer including the anaconda version (except python 2.7 as my mac doesn't accept that I remove it)

回答1:

ok what i did is that I uninstalled python and reinstalled everything with Homebrew and it worked

来源：https://stackoverflow.com/questions/55199032/i-can-open-a-jupyter-notebook-but-i-cannot-run-the-notebook-with-python-script