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Pythonでopensslに依存したライブラリでエラーが出た時の対策

Last updated at Posted at 2016-05-07

情報

Python

$ python --version

=> Python 2.7.11 :: Continuum Analytics, Inc.

Django

$ python -c "import django; print(django.get_version())"

=> 1.9.6

OSX

$ sw_vers

=>

ProductName:	Mac OS X
ProductVersion:	10.10.5
BuildVersion:	14F1605

トラブルシューティング

pip install mysqlclientしたあとに、python manage.py migrateを実行した以下のエラーが出た

Library not loaded: libssl.1.0.0.dylib

また、

pip install djangorestframeworkしたときも

ImportError: cannot import name HTTPSHandler

どちらも、opensslのライブラリのリンクに問題がある

解決

ということで、再インストールした

$ brew install openssl
$ brew link openssl --force
$ brew uninstall python
$ brew install python --with-brewed-openssl

もう一度実行

$ python manage.py migrate

以下の結果が出ればOK

Operations to perform:
  Apply all migrations: admin, contenttypes, auth, sessions
Running migrations:
  Rendering model states... DONE
  Applying contenttypes.0001_initial... OK
  Applying auth.0001_initial... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying sessions.0001_initial... OK

djangorestframeworkのほうもう一度

$ pip install djangorestframework

以下の結果が出ればOK

Collecting djangorestframework
  Downloading djangorestframework-3.3.3-py2.py3-none-any.whl (662kB)
    100% |████████████████████████████████| 665kB 542kB/s 
Installing collected packages: djangorestframework
Successfully installed djangorestframework-3.3.3

参考資料

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