component_to_subrule function

Question

Hello! I tried to use an example from the manual page, but get the following error:

Answer 1

This is a recent addition; make sure you are running a current version of Cadabra.

Comments

Today I have built the latest available version for Ubuntu 18 from the source

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I can't reproduce it, can you copy the full text of the error message, not just a cut screenshot?

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Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/cadabra2_jupyter/kernel.py", line 54, in do_execute
    self._execute_python(pycode)
  File "/usr/local/lib/python3.6/site-packages/cadabra2_jupyter/kernel.py", line 108, in _execute_python
    self._sandbox_context(pycode)
  File "/usr/local/lib/python3.6/site-packages/cadabra2_jupyter/context.py", line 51, in __call__
    exec(code, self._sandbox)
  File "<string>", line 7, in <module>
AttributeError: module 'cdb.core.component' has no attribute 'components_to_subrule'

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I don't want to be intrusive, but I reinstalled cadabra again today but this function still doesn't work :(