Package: python3-yapf
Version: 0.21.0-1
Severity: serious
User: helm...@debian.org
Usertags: python-import

After installing python3-yapf importing the module yapf
into a python interpreter fails with the following error:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/yapf/__init__.py", line 36, in <module>
    from yapf.yapflib import file_resources
  File "/usr/lib/python3/dist-packages/yapf/yapflib/file_resources.py", line 
24, in <module>
    from lib2to3.pgen2 import tokenize
ModuleNotFoundError: No module named 'lib2to3'

The vast majority of import failures is attributed to missing dependencies.
Often times that manifests as an ImportError or ModuleNotFoundError.
Typically, dependencies should be inserted by dh-python via ${python:Depends}
or ${python3:Depends}. Thus a missing dependency can be caused by incomplete
install_requires in setup.py. Sometimes a missing dependency of a dependency
is the cause, in such cases this bug should be reassigned.

Helmut

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