BooleanType with ServerDefault false breaks poorly

[lolopinto]

BooleanType({ name: "NeedsHelp", serverDefault: false }),

breaks with error

Generating /Users/ola/code/helping-hands-on-ent/src/schema/versions/a1973ac9e252_202073181625_add_users_table.py ... done
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1246, in _execute_context
    cursor, statement, parameters, context
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/default.py", line 588, in do_execute
    cursor.execute(statement, parameters)
psycopg2.errors.InvalidTextRepresentation: invalid input syntax for type boolean: "%!s(bool=false)"


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "auto_schema/gen_db_schema.py", line 37, in <module>
    r.run()
  File "/Users/ola/code/ent/python/auto_schema/auto_schema/runner.py", line 185, in run
    self._apply_changes(diff)
  File "/Users/ola/code/ent/python/auto_schema/auto_schema/runner.py", line 197, in _apply_changes
    self.upgrade()
  File "/Users/ola/code/ent/python/auto_schema/auto_schema/runner.py", line 251, in upgrade
    self.cmd.upgrade()
  File "/Users/ola/code/ent/python/auto_schema/auto_schema/command.py", line 40, in upgrade
    command.upgrade(self.alembic_cfg, revision)
  File "/usr/local/lib/python3.7/site-packages/alembic/command.py", line 276, in upgrade
    script.run_env()
  File "/usr/local/lib/python3.7/site-packages/alembic/script/base.py", line 475, in run_env
    util.load_python_file(self.dir, "env.py")
  File "/usr/local/lib/python3.7/site-packages/alembic/util/pyfiles.py", line 90, in load_python_file
    module = load_module_py(module_id, path)
  File "/usr/local/lib/python3.7/site-packages/alembic/util/compat.py", line 156, in load_module_py
    spec.loader.exec_module(module)
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Users/ola/code/ent/python/auto_schema/auto_schema/env.py", line 137, in <module>
    run_migrations_online()
  File "/Users/ola/code/ent/python/auto_schema/auto_schema/env.py", line 130, in run_migrations_online
    context.run_migrations()
  File "<string>", line 8, in run_migrations
  File "/usr/local/lib/python3.7/site-packages/alembic/runtime/environment.py", line 839, in run_migrations
    self.get_context().run_migrations(**kw)
  File "/usr/local/lib/python3.7/site-packages/alembic/runtime/migration.py", line 361, in run_migrations
    step.migration_fn(**kw)
  File "/Users/ola/code/helping-hands-on-ent/src/schema/versions/a1973ac9e252_202073181625_add_users_table.py", line 34, in upgrade
    sa.PrimaryKeyConstraint('id', name='users_id_pkey')
  File "<string>", line 8, in create_table
  File "<string>", line 3, in create_table
  File "/usr/local/lib/python3.7/site-packages/alembic/operations/ops.py", line 1248, in create_table
    return operations.invoke(op)
  File "/usr/local/lib/python3.7/site-packages/alembic/operations/base.py", line 345, in invoke
    return fn(self, operation)
  File "/usr/local/lib/python3.7/site-packages/alembic/operations/toimpl.py", line 101, in create_table
    operations.impl.create_table(table)
  File "/usr/local/lib/python3.7/site-packages/alembic/ddl/impl.py", line 251, in create_table
    self._exec(schema.CreateTable(table))
  File "/usr/local/lib/python3.7/site-packages/alembic/ddl/impl.py", line 134, in _exec
    return conn.execute(construct, *multiparams, **params)
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 982, in execute
    return meth(self, multiparams, params)
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/sql/ddl.py", line 72, in _execute_on_connection
    return connection._execute_ddl(self, multiparams, params)
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1044, in _execute_ddl
    compiled,
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1250, in _execute_context
    e, statement, parameters, cursor, context
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1476, in _handle_dbapi_exception
    util.raise_from_cause(sqlalchemy_exception, exc_info)
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/util/compat.py", line 398, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/util/compat.py", line 152, in reraise
    raise value.with_traceback(tb)
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1246, in _execute_context
    cursor, statement, parameters, context
  File "/usr/local/lib/python3.7/site-packages/sqlalchemy/engine/default.py", line 588, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.DataError: (psycopg2.errors.InvalidTextRepresentation) invalid input syntax for type boolean: "%!s(bool=false)"

[SQL: 
CREATE TABLE users (
	id UUID NOT NULL, 
	created_at TIMESTAMP WITHOUT TIME ZONE NOT NULL, 
	updated_at TIMESTAMP WITHOUT TIME ZONE NOT NULL, 
	first_name TEXT NOT NULL, 
	last_name TEXT NOT NULL, 
	email_address TEXT, 
	phone_number TEXT NOT NULL, 
	bio TEXT, 
	can_help BOOLEAN DEFAULT '%%!s(bool=false)' NOT NULL, 
	needs_help BOOLEAN DEFAULT '%%!s(bool=false)' NOT NULL, 
	CONSTRAINT users_id_pkey PRIMARY KEY (id)
)

]
(Background on this error at: http://sqlalche.me/e/9h9h)
2020/07/31 01:16:25 cmd.Run() failed with exit status 1

Current acceptable format is

BooleanType({ name: "NeedsHelp", serverDefault: "false" }),