Jupyter notebook 使用错误的 PATH（使用 Miniconda 而不是 Anaconda）答案

【问题标题】：Jupyter notebook using wrong PATH (using Miniconda instead of Anaconda)Jupyter notebook 使用错误的 PATH（使用 Miniconda 而不是 Anaconda）
【发布时间】：2017-08-08 05:39:50
【问题描述】：

我已尝试卸载 Miniconda 并重新安装 Anaconda。在终端中运行 Python 会找到正确的库和 PATH，但 jupyter 会说未安装 numpy，因为它找不到 conda 包。

这是我从echo $PATH得到的

/home/clu/anaconda3/bin:/home/clu/anaconda3/bin:/home/clu/anaconda3/bin:/home/clu/anaconda3/bin:/home/clu/anaconda3/bin:/home/clu/bin:/home/clu/.local/bin:/home/clu/anaconda3/bin:/home/clu/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/cuda/bin:/usr/local/caffe/bin:/snap/bin:/home/clu/anaconda3/bin

这是在jupyter中启动新内核的错误

Traceback (most recent call last):
  File "/home/clu/anaconda3/lib/python3.6/site-packages/notebook/base/handlers.py", line 516, in wrapper
    result = yield gen.maybe_future(method(self, *args, **kwargs))
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1063, in run
    yielded = self.gen.throw(*exc_info)
  File "/home/clu/anaconda3/lib/python3.6/site-packages/notebook/services/sessions/handlers.py", line 75, in post
    type=mtype))
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1063, in run
    yielded = self.gen.throw(*exc_info)
  File "/home/clu/anaconda3/lib/python3.6/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 "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1063, in run
    yielded = self.gen.throw(*exc_info)
  File "/home/clu/anaconda3/lib/python3.6/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 "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/home/clu/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 307, in wrapper
    yielded = next(result)
  File "/home/clu/anaconda3/lib/python3.6/site-packages/notebook/services/kernels/kernelmanager.py", line 94, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "/home/clu/anaconda3/lib/python3.6/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "/home/clu/anaconda3/lib/python3.6/site-packages/jupyter_client/manager.py", line 257, in start_kernel
    **kw)
  File "/home/clu/anaconda3/lib/python3.6/site-packages/jupyter_client/manager.py", line 203, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "/home/clu/anaconda3/lib/python3.6/site-packages/jupyter_client/launcher.py", line 128, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "/home/clu/anaconda3/lib/python3.6/subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "/home/clu/anaconda3/lib/python3.6/subprocess.py", line 1326, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: '/home/clu/miniconda3/bin/python3'

【问题讨论】：

/home/clu/miniconda3/bin 不包含 python3 可执行文件。该目录是否存在？
不，我在卸载 Miniconda 时删除了它
检查 PYTHONHOME 环境。多变的。我认为它不应该存在，或者指向正确的位置。
你是对的。 PYTHONHOME 什么也没显示。（编辑错字）
好的，最后一次机会可能会将其设置为您的 anaconda 发行版； /home/clu/anaconda3.

标签： python

【解决方案1】：

找到解决方法（https://github.com/lmmx/devnotes/wiki/Install-Python-3-and-Python-2-kernels-for-Jupyter-notebook 也建议）

将PYTHONHOME 设置为/home/clu/anaconda3：这会强制Jupyter 启动器使用这个现有的python 发行版。

【讨论】：