Ubuntu 16.04.7 安裝 python 3.6之後CommandNotFound.py的問題

Ubuntu 16.04.7 預設是裝 python 3.5

若額外裝了python 3.6，然後把 /usr/bin/python3指到python 3.6的話

系統在操作的時候如果輸入找不到的指令或是執行檔，總是會吐出下面的錯誤訊息

 

Traceback (most recent call last):
  File "/usr/lib/python3.6/dbm/gnu.py", line 4, in <module>
    from _gdbm import *
ModuleNotFoundError: No module named '_gdbm'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line                                                                                        7, in <module>
    import dbm.gnu as gdbm
  File "/usr/lib/python3.6/dbm/gnu.py", line 6, in <module>
    raise ImportError(str(msg) + ', please install the python3-gdbm package')
ImportError: No module named '_gdbm', please install the python3-gdbm package

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/command-not-found", line 27, in <module>
    from CommandNotFound.util import crash_guard
  File "/usr/lib/python3/dist-packages/CommandNotFound/__init__.py", line 3, in                                                                                        <module>
    from CommandNotFound.CommandNotFound import CommandNotFound
  File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line                                                                                        9, in <module>
    import gdbm
ModuleNotFoundError: No module named 'gdbm'

 

 我才發現似乎是因為系統裝了 python3-commandnotfound 這個package，所以找不到command會交給這個package處理，然後python 3.6沒裝gdbm這個套件導致

所以解決方法就是

sudo apt-get install python3.6-gdbm

 收工