Bug#896267: python3-yapf: yapf fails to import

2018-04-25 Thread Matthias Klose
Control: tags -1 + patch

patch at
http://launchpadlibrarian.net/367400975/yapf_0.20.1-1_0.20.1-1ubuntu1.diff.gz



Bug#896267: python3-yapf: yapf fails to import

2018-04-20 Thread Helmut Grohne
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 "", line 1, in 
  File "/usr/lib/python3/dist-packages/yapf/__init__.py", line 36, in 
from yapf.yapflib import file_resources
  File "/usr/lib/python3/dist-packages/yapf/yapflib/file_resources.py", line 
24, in 
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