import click


class MyCLI(click.MultiCommand):
    def list_commands(self, ctx):
        print('A')
        assert ctx.obj is not None, 'A'

    def get_command(self, ctx, name):
        print('B')
        assert ctx.obj is not None, 'B'

@click.command(cls=MyCLI)
@click.pass_context
def cli(ctx):
    ctx.obj = 123

if __name__ == '__main__':
    cli()



 cmd = self.get_command(ctx, cmd_name)
  File "cli4.py", line 11, in get_command
    assert ctx.obj is not None, 'B'
AssertionError: B