I took a look at the Django source. There's code for serialising methods in Django that checks `if isinstance(value, (types.FunctionType, types.BuiltinFunctionType))` which succeeds on cpython because datetime.date.today is a BuiltinFunctionType, wheras it's a types.MethodType on pypy. Maybe that check could be expanded to include MethodType.
Here's the code at master: https://github.com/django/django/blob/3b383085fb89a48e756383e7cd5d3bd867353ba1/django/db/migrations/serializer.py#L379 On 17 August 2016 at 17:27, Sergey Kurdakov <sergey.fo...@gmail.com> wrote: > Hi William, > > here is my traceback in console > > Traceback (most recent call last): > File "manage.py", line 10, in <module> > execute_from_command_line(sys.argv) > File > "/usr/local/lib/pypy2.7/dist-packages/django/core/management/__init__.py", > line 353, in execute_from_command_line > utility.execute() > File > "/usr/local/lib/pypy2.7/dist-packages/django/core/management/__init__.py", > line 345, in execute > self.fetch_command(subcommand).run_from_argv(self.argv) > File > "/usr/local/lib/pypy2.7/dist-packages/django/core/management/base.py", line > 348, in run_from_argv > self.execute(*args, **cmd_options) > File > "/usr/local/lib/pypy2.7/dist-packages/django/core/management/base.py", line > 399, in execute > output = self.handle(*args, **options) > File > "/usr/local/lib/pypy2.7/dist-packages/django/core/management/commands/makemigrations.py", > line 150, in handle > self.write_migration_files(changes) > File > "/usr/local/lib/pypy2.7/dist-packages/django/core/management/commands/makemigrations.py", > line 178, in write_migration_files > migration_string = writer.as_string() > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 167, in as_string > operation_string, operation_imports = > OperationWriter(operation).serialize() > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 124, in serialize > _write(arg_name, arg_value) > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 76, in _write > arg_string, arg_imports = MigrationWriter.serialize(item) > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 357, in serialize > item_string, item_imports = cls.serialize(item) > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 433, in serialize > return cls.serialize_deconstructed(path, args, kwargs) > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 318, in serialize_deconstructed > arg_string, arg_imports = cls.serialize(arg) > File > "/usr/local/lib/pypy2.7/dist-packages/django/db/migrations/writer.py", line > 540, in serialize > "topics/migrations/#migration-serializing" % (value, get_docs_version()) > ValueError: Cannot serialize: <bound method type.today of <class > 'datetime.date'>> > > > > Regards > Sergey > > > On Wed, Aug 17, 2016 at 10:21 AM, William ML Leslie > <william.leslie....@gmail.com> wrote: >> >> On 17 August 2016 at 16:50, Sergey Kurdakov <sergey.fo...@gmail.com> >> wrote: >> > >> > still causes error of the kind: >> > >> > topics/migrations/#migration-serializing" % (value, get_docs_version()) >> > ValueError: Cannot serialize: <bound method type.today of <class >> > 'datetime.date' >> >> Do you get a full traceback? That would be much more useful for >> tracking down the problem. >> >> -- >> William Leslie >> >> Notice: >> Likely much of this email is, by the nature of copyright, covered >> under copyright law. You absolutely MAY reproduce any part of it in >> accordance with the copyright law of the nation you are reading this >> in. Any attempt to DENY YOU THOSE RIGHTS would be illegal without >> prior contractual agreement. > > -- William Leslie Notice: Likely much of this email is, by the nature of copyright, covered under copyright law. You absolutely MAY reproduce any part of it in accordance with the copyright law of the nation you are reading this in. Any attempt to DENY YOU THOSE RIGHTS would be illegal without prior contractual agreement. _______________________________________________ pypy-dev mailing list pypy-dev@python.org https://mail.python.org/mailman/listinfo/pypy-dev
