[Django] #24884: Migrations created in Python2.7 fail in Python3.4
Django
----------------------------------------------+--------------------
Reporter: Chris7 | Owner: nobody
Type: Uncategorized | Status: new
Component: Database layer (models, ORM) | Version: 1.8
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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A migration file created with Python2.7 is failing with the following
error in Python3.4:
{{{
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/core/management/__init__.py", line
338, in execute_from_command_line
utility.execute()
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/core/management/__init__.py", line
330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/core/management/base.py", line 390,
in run_from_argv
self.execute(*args, **cmd_options)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/core/management/base.py", line 441,
in execute
output = self.handle(*args, **options)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/core/management/commands/migrate.py",
line 221, in handle
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/migrations/executor.py", line
110, in migrate
self.apply_migration(states[migration], migration, fake=fake,
fake_initial=fake_initial)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/migrations/executor.py", line
147, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/migrations/migration.py", line
115, in apply
operation.database_forwards(self.app_label, schema_editor, old_state,
project_state)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/migrations/operations/models.py",
line 59, in database_forwards
schema_editor.create_model(model)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/backends/base/schema.py", line
261, in create_model
self.quote_name(field.column),
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/backends/base/schema.py", line
114, in quote_name
return self.connection.ops.quote_name(name)
File "/home/chris/.virtualenvs/djangui3/lib/python3.4/site-
packages/Django-1.8.2-py3.4.egg/django/db/backends/sqlite3/operations.py",
line 98, in quote_name
if name.startswith('"') and name.endswith('"'):
TypeError: startswith first arg must be bytes or a tuple of bytes, not str
}}}
The offending entry in my migration is:
{{{
('_value', models.TextField(db_column=b'value')),
}}}
Removal of the b allows migration to carry on.
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Ticket URL: <https://code.djangoproject.com/ticket/24884>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
Django
Reporter: Chris7 | Owner: nobody
Type: Uncategorized | Status: closed
Component: Database layer | Version: 1.8
(models, ORM) |
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
Changes (by timgraham):
* status: new => closed
* needs_better_patch: => 0
* resolution: => invalid
* needs_tests: => 0
* needs_docs: => 0
Comment:
Please see [https://docs.djangoproject.com/en/stable/topics/migrations
/#supporting-python-2-and-3 Supporting Python 2 and 3] in the migrations
topic guide.
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Ticket URL: <https://code.djangoproject.com/ticket/24884#comment:1>