#25192: Can't Squash Migration that uses migrations.RunPython.noop in Python2 ----------------------------+-------------------- Reporter: jpulec | Owner: nobody Type: Bug | Status: new Component: Migrations | Version: 1.8 Severity: Normal | Keywords: Triage Stage: Unreviewed | Has patch: 0 Easy pickings: 0 | UI/UX: 0 ----------------------------+-------------------- When trying to squash a set of migrations, if one of them uses migrations.RunPython.noop for a backwards or forward operation, a ValueError is raised due to an attempt to serialize an unbound method. Not sure if there should be a special check for that operation when attempting to run squashmigrations with Python2.
Traceback: {{{ Traceback (most recent call last): File "manage.py", line 17, in <module> execute_from_command_line(sys.argv) File "/var/venv/local/lib/python2.7/site- packages/django/core/management/__init__.py", line 338, in execute_from_command_line utility.execute() File "/var/venv/local/lib/python2.7/site- packages/django/core/management/__init__.py", line 330, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/var/venv/local/lib/python2.7/site- packages/django/core/management/base.py", line 393, in run_from_argv self.execute(*args, **cmd_options) File "/var/venv/local/lib/python2.7/site- packages/django/core/management/base.py", line 444, in execute output = self.handle(*args, **options) File "/var/venv/local/lib/python2.7/site- packages/django/core/management/commands/squashmigrations.py", line 141, in handle fh.write(writer.as_string()) File "/var/venv/local/lib/python2.7/site- packages/django/db/migrations/writer.py", line 166, in as_string operation_string, operation_imports = OperationWriter(operation).serialize() File "/var/venv/local/lib/python2.7/site- packages/django/db/migrations/writer.py", line 124, in serialize _write(arg_name, arg_value) File "/var/venv/local/lib/python2.7/site- packages/django/db/migrations/writer.py", line 87, in _write arg_string, arg_imports = MigrationWriter.serialize(_arg_value) File "/var/venv/local/lib/python2.7/site- packages/django/db/migrations/writer.py", line 435, in serialize % (value.__name__, module_name, get_docs_version())) ValueError: Could not find function noop in django.db.migrations.operations.special. Please note that due to Python 2 limitations, you cannot serialize unbound method functions (e.g. a method declared and used in the same class body). Please move the function into the main module body to use migrations. }}} -- Ticket URL: <https://code.djangoproject.com/ticket/25192> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/049.e3dad0aaeb22907449c51b5f372a5da2%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.