Attribute Error on poet init

[sametmax]

The whole interactive session:

poet init                     

                                        
  Welcome to the Poet config generator  
                                        


This command will guide you through creating your poetry.toml config.

Package name [repo]: ***
Version [0.1.0]: 
Description []: ***
Author [***, n to skip]: 
License []: MIT

Would you like to define your dependencies (require) interactively? (yes/no) [yes] yes

Search for a package: 


Would you like to define your dev dependencies (require-dev) interactively (yes/no) [yes] yes

Search for a package: mypy
Found 19 packages matching mypy

Enter package # to add, or the complete package name if it is not listed: 
 [ 0] flake8-mypy
 [ 1] mypy-lang
 [ 2] pytest-mypy
 [ 3] mypy
 [ 4] mypy_extensions
 [ 5] MypyBear
 [ 6] mypyHook
 [ 7] MyPyML
 [ 8] mypypi
 [ 9] mypypilxp
 [10] mypypiproject
 [11] mypypitest
 [12] MyPyPiTut
 [13] mypytest
 [14] mypython
 [15] mypython02
 [16] mypython2
 [17] wymypy-ng
 [18] wymypy
 > 3

Enter the version constraint to require (or leave blank to use the latest version): 

                    
  [AttributeError]  
  __exit__          

I have no more information about the error.

Ubuntu 16.04, virtualenv with Python 3.4

[sdispater]

Could you execute the command again with the -v/--verbose option to get the full stack trace to see exactly where it is raised?

[sametmax]

Here you are:

Exception trace:
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/cleo/application.py in run() at line 95
   status_code = self.do_run(input_, output_)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/cleo/application.py in do_run() at line 188
   status_code = command.run(input_, output_)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/cleo/commands/command.py in run() at line 99
   return super(Command, self).run(i, o)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/cleo/commands/base_command.py in run() at line 146
   status_code = self.execute(input_, output_)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/console/commands/index_command.py in execute() at line 28
   super(IndexCommand, self).execute(i, o)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/console/commands/command.py in execute() at line 63
   return super(Command, self).execute(i, o)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/cleo/commands/command.py in execute() at line 108
   return self.handle()
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/console/commands/init.py in handle() at line 154
   self._determine_requirements(self.option('dev-dependency'))
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/console/commands/init.py in _determine_requirements() at line 258
   constraint = self._find_best_version_for_package(package)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/console/commands/init.py in _find_best_version_for_package() at line 294
   package = selector.find_best_candidate(package)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/version_selector.py in find_best_candidate() at line 19
   candidates = self._repository.find_packages(package_name, constraint)
 /home/user/.local/share/virtualenvs/dyspatch/lib/python3.4/site-packages/poet/repositories/pypi_repository.py in find_packages() at line 34
   with ServerProxy(self._url) as client:

init [-i|--index INDEX] [--name NAME] [--description DESCRIPTION] [--author AUTHOR] [--dependency DEPENDENCY] [--dev-dependency DEV-DEPENDENCY] [-l|--license LICENSE] [--] [<template>]