At this time we do not support python 3.8. It seems to have broken both 
web2py and py4web in different ways. I think 3.8 should be fixed, not 
web2py,

On Friday, 22 November 2019 07:07:18 UTC-8, Woody wrote:
>
> I updated to Python 3.8 on Arch Linux today and I had the same problem 
> with 'escape'. I patched the languages.py file and got web2py to start, but 
> then hit another error:
>
> Traceback (most recent call last):
>   File "/home/www/web2py/gluon/restricted.py", line 219, in restricted
>     exec(ccode, environment)
>   File "/home/www/web2py/applications/x10_security/models/db.py" 
> <https://home.woodring.us/admin/default/edit/x10_security/models/db.py>, line 
> 55, in <module>
>     auth.define_tables(username=False, signature=False)
>   File "/home/www/web2py/gluon/tools.py", line 2092, in define_tables
>     super(Auth, self).define_tables(username, signature, migrate, 
> fake_migrate)._table_signature_list
>   File "/home/www/web2py/gluon/authapi.py", line 322, in define_tables
>     db.define_table(
>   File "/home/www/web2py/gluon/packages/dal/pydal/base.py", line 592, in 
> define_table
>     table = self.lazy_define_table(tablename, *fields, **kwargs)
>   File "/home/www/web2py/gluon/packages/dal/pydal/base.py", line 623, in 
> lazy_define_table
>     self._adapter.create_table(
>   File "/home/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
> 798, in create_table
>     return self.migrator.create_table(*args, **kwargs)
>   File "/home/www/web2py/gluon/packages/dal/pydal/migrator.py", line 299, in 
> create_table
>     sql_fields_old = pickle.load(tfile)
> TypeError: file must have 'read', 'readinto' and 'readline' attributes
>
>
> I looked for a discussion or patch for this, but I didn't find one. Can 
> anybody tell me how to fix this?
>

-- 
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
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