Type 'SearchPaginator' cannot be serialized.

[redtoad]

Originally reported by guosen xu (Bitbucket: dai31, GitHub: Unknown)

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Q1:

#!python
result = api.item_search('Toys', Keywords='Rocket')
print result.results
print result.pages
print result.current

is ok!

but:

#!python

print etree.tostring(result)
#or
print etree.tostring(results, pretty_print=True)

Will be an error: Type 'SearchPaginator' cannot be serialized.

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Q2:

#!python

for item in result:
     tmp = etree.tostring(item)
     print tmp

If something wrong happens to traverse the midway, how should I continue to traverse?

Thanks!

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• Bitbucket: https://bitbucket.org/basti/python-amazon-product-api/issue/54

[redtoad]

Original comment by Sebastian Rahlf (Bitbucket: basti, GitHub: basti)

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Using etree.tostring(result) will not work because result is not of type lxml.objectify.ObjectifiedElement but a custom iterator object which will fetch all subsequent result pages from Amazon as you iterate over the results.

#!python

>>> type(result)
<class 'amazonproduct.processors._lxml.SearchPaginator'>

If you want to see the original XML element, try fetching a single response page with

#!python

>>> result.page(1)
<Element {http://webservices.amazon.com/AWSECommerceService/2011-08-01}ItemSearchResponse at 0x19c6cd0>
>>> print etree.tostring(result.page(1), pretty_print=True)
<ItemSearchResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2011-08-01">
  <OperationRequest>
    <HTTPHeaders>
      <Header Name="UserAgent" Value="python-amazon-product-api/0.2.8 +http://pypi.python.org/pypi/python-amazon-product-api/"/>
...

Iterating over the results will return the individual elements not the pages!