以前裝了 jupyter notebook ，可以用的（pip install jupyter）,但是沒過一陣子就發現用不了了，淚崩，還沒當回事，但上週資料探勘作業一定要用到jupyter notebook，搞了好幾天都沒發現問題所在，今天早上看了一篇部落格終於知道怎麼回事了

https://blog.csdn.net/candcplusplus/article/details/72793591

首先我在控制檯（cmd）開啟 jupyter notebook是這樣的         

C:\Users\17119>jupyter notebook
Traceback (most recent call last):
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\17119\AppData\Local\Programs\Python\Python36-32\Scripts\jupyter-notebook.EXE\__main__.py", line 5, in <module>
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\notebook\notebookapp.py", line 38, in <module>
    from jinja2 import Environment, FileSystemLoader
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\jinja2\__init__.py", line 33, in <module>
    from jinja2.environment import Environment, Template
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\jinja2\environment.py", line 15, in <module>
    from jinja2 import nodes
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\jinja2\nodes.py", line 19, in <module>
    from jinja2.utils import Markup
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\jinja2\utils.py", line 647, in <module>
    from markupsafe import Markup, escape, soft_unicode
  File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\markupsafe\__init__.py", line 14, in <module>
    from markupsafe._compat import text_type, string_types, int_types, \

ModuleNotFoundError: No module named 'markupsafe._compat'
 

注意，開啟notebook後不是我這樣的用不來我下面的解決辦法，請自行找其他方法吧~

注意到最後一句話：No module named 'markupsafe._compat' ——我擦，居然說這個包裡面找不到_compat.py檔案，我當時就很納悶，難道我pip 裝的包會有缺失？那不是扯淡嗎。

然後就問度娘， 他娘累，真有跟我一樣的，趕緊找到 這個markupmarkupsafe 資料夾——File "c:\users\17119\appdata\local\programs\python\python36-32\lib\site-packages\markupsafe\__init__.py

是這樣的：

當時就我擦嘞，果然沒有 那個_cmpat.py檔案，趕緊加進去，內容：

# -*- coding: utf-8 -*-
"""
    markupsafe._compat
    ~~~~~~~~~~~~~~~~~~
    Compatibility module for different Python versions.
    :copyright: (c) 2013 by Armin Ronacher.
    :license: BSD, see LICENSE for more details.
"""
import sys
PY2 = sys.version_info[0] == 2
if not PY2:
    text_type = str
    string_types = (str,)
    unichr = chr
    int_types = (int,)
    iteritems = lambda x: iter(x.items())
else:
    text_type = unicode
    string_types = (str, unicode)
    unichr = unichr
    int_types = (int, long)

    iteritems = lambda x: x.iteritems()
 

儲存，如下：

然後 抱著試一試的心態，執行jupyter notebook

成功！amazing!