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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def register(name=EopDb.DEFAULT_DBNAME):
 """Decorator for registering an Eop Database Example: .. code-block:: python @register class SqliteEnvDatabase: # sqlite implementation # this database will be known as 'default' @register('json') class JsonEnvDatabase: # JSON implementation EopDb.get(58090.2) # get Eop from SqliteEnvDatabase EopDb.get(58090.2, dbname='default') # same as above EopDb.get(58090.2, dbname='json') # get Eop from JsonEnvDatabase """


    # I had a little trouble setting this function up, due to the fact that
    # I wanted it to be usable both as a simple decorator (``@register``)
    # and a decorator with arguments (``@register('mydatabase')``).
    # The current implementation allows this dual-use, but it's a bit hacky.

    # In the simple decorator mode, when the @register decorator is called
    # the argument passed is the class to decorate. So it *is* the decorated
    # function

    # In the decorator-with-arguments mode, the @register decorator should provide
    # a callable that will be the decorated function. This callable takes
    # the class you want to decorate

    if isinstance(name, str):
        # decorator with argument
        def wrapper(klass):
            EopDb.register(klass, name)
            return klass

        return wrapper

    else:
        # simple decorator mode
        klass = name

        EopDb.register(klass)
        return klass