Erro ao testar usando o próprio exemplo informado

Olá, tentei usar testando o próprio exemplo informado. Apresenta erro do amount do item, porém, está informado de acordo com o padrão. Alterei de 354.20 para 354.02 e continua o erro.

Obrigado

In [50]: pg.items = [{'amount': 354.02,
...: 'description': 'Produto 3',
...: 'id': '0003',
...: 'quantity': 2,
...: 'weight': 200}]

In [51]: response = pg.checkout()

In [52]: response.errors
Out[52]:
OrderedDict([(u'code', u'11029'),
(u'message',
u'Item amount invalid pattern: 354. Must fit the patern: \\d+.\\d{2}')])

Start by reproducing the issue with pg.items and pg.checkout() using the example values, then inspect how the item amount is validated or formatted before the PagSeguro request. Done means the documented 354.20-style amount is accepted and response.errors no longer reports the truncated value as an invalid pattern.

Written by the indexing model from the issue text.