Python 循环导入模块 _gi 导致 apt-add-repository 命令在 linux 中失败

Question

今天我试图添加一个存储库时发现一个我似乎无法解决的奇怪错误。

我试图执行此命令

sudo apt-add-repository ppa:fish-shell/release-3

当它总是返回这个错误信息时

Traceback (most recent call last):
  File "/usr/bin/apt-add-repository", line 11, in <module>
    from softwareproperties.SoftwareProperties import SoftwareProperties, shortcut_handler
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 67, in <module>
    from gi.repository import Gio
  File "/usr/lib/python3/dist-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: cannot import name '_gi' from partially initialized module 'gi' (most likely due to a circular import) (/usr/lib/python3/dist-packages/gi/__init__.py)

我试过用这个命令诊断它

 sudo update-alternatives --config python3

它表明了这一点

There is only one alternative in link group python3 (providing /usr/bin/python3): /usr/bin/python3.8
Nothing to configure.

我也试过去 /usr/lib/python3/dist-packages/gi 并用这个命令在那里添加一个符号链接

sudo ln -s _gi.cpython-{36m,37m}-x86_64-linux-gnu.so

仍然没有工作

我尝试将正确的 python 版本添加到 /usr/bin/apt-add-repository

我也尝试过使用

python3 -m pip install gi
  Could not find a version that satisfies the requirement gi (from versions: )
No matching distribution found for gi

我该如何解决这个恼人的错误？

Answer 1

完毕：

sudo apt-get install graphviz

和代码：

import objgraph
import random
import io
from graphviz import Source
from io import StringIO

q = StringIO()

#objgraph.show_refs([SAFE_TAGS], output=s)

objgraph.show_chain(
    objgraph.find_backref_chain(
        random.choice(objgraph.by_type('dict')),
        objgraph.is_proper_module),
    output=q)

q.seek(0)
Source(q.read())

图表