python - 如何修复 Ubuntu 20.04 中的 Octave 符号包错误？

Question

我已经安装了符号包。当我尝试使用符号时，Octave 的命令窗口中有一些与 python 相关的错误。以下是输出:

> pkg load symbolic
>> syms a
Symbolic pkg v2.9.0: Traceback (most recent call last):
  File "<stdin>", line 28, in <module>
AttributeError: '_PrintFunction' object has no attribute '__globals__'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 12, in octoutput_drv
  File "<stdin>", line 54, in octoutput
  File "<stdin>", line 55, in octoutput
AttributeError: module 'sympy' has no attribute 'compatibility'
Closing the Python communications link.

error: Python exception: AttributeError: '_PrintFunction' object has no attribute '__globals__'
    occurred in python_header import block.
    Try "sympref reset" and repeat your command?
    (consider filing an issue at https://github.com/cbm755/octsympy/issues)
error: called from
    pycall_sympy__ at line 191 column 5
    valid_sym_assumptions at line 38 column 10
    assumptions at line 82 column 7
    syms at line 97 column 13
>> Opening in existing browser session.

知道如何解决这个问题吗？
谢谢。

Answer 1

该错误是一个已知错误 (https://github.com/cbm755/octsympy/issues/1035)
您需要使用旧版本的 sympy sunch 作为 1.5.1 版本