crossrefapi 1.2.0 on PyPI

Crossref API Client

Library with functions to iterate through the Crossref API.

https://travis-ci.org/fabiobatalha/crossrefapi.svg?branch=master

How to Install

pip install crossrefapi

How to Use

Works

Agency

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: works.agency('10.1590/0102-311x00133115')
Out[3]:
{'DOI': '10.1590/0102-311x00133115',
 'agency': {'id': 'crossref', 'label': 'CrossRef'}}

Sample

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: for item in works.sample(2):
   ...:     print(item['title'])
   ...:
['On the Origin of the Color-Magnitude Relation in the Virgo Cluster']
['Biopsychosocial Wellbeing among Women with Gynaecological Cancer']

Query

See valid parameters in Works.FIELDS_QUERY

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: w1 = works.query(bibliographic='zika', author='johannes', publisher_name='Wiley-Blackwell')

In [4]: for item in w1:
   ...:     print(item['title'])
   ...:
   ...:
['Inactivation and removal of Zika virus during manufacture of plasma-derived medicinal products']
['Harmonization of nucleic acid testing for Zika virus: development of the 1st\n World Health Organization International Standard']

Doi

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: works.doi('10.1590/0102-311x00133115')
Out[3]:
{'DOI': '10.1590/0102-311x00133115',
 'ISSN': ['0102-311X'],
 'URL': 'http://dx.doi.org/10.1590/0102-311x00133115',
 'alternative-id': ['S0102-311X2016001107002'],
 'author': [{'affiliation': [{'name': 'Surin Rajabhat University,  Thailand'}],
   'family': 'Wiwanitki',
   'given': 'Viroj'}],
 'container-title': ['Cadernos de Saúde Pública'],
 'content-domain': {'crossmark-restriction': False, 'domain': []},
 'created': {'date-parts': [[2016, 12, 7]],
  'date-time': '2016-12-07T21:52:08Z',
  'timestamp': 1481147528000},
 'deposited': {'date-parts': [[2017, 5, 24]],
  'date-time': '2017-05-24T01:57:26Z',
  'timestamp': 1495591046000},
 'indexed': {'date-parts': [[2017, 5, 24]],
  'date-time': '2017-05-24T22:39:11Z',
  'timestamp': 1495665551858},
 'is-referenced-by-count': 0,
 'issn-type': [{'type': 'electronic', 'value': '0102-311X'}],
 'issue': '11',
 'issued': {'date-parts': [[2016, 11]]},
 'member': '530',
 'original-title': [],
 'prefix': '10.1590',
 'published-print': {'date-parts': [[2016, 11]]},
 'publisher': 'FapUNIFESP (SciELO)',
 'reference-count': 3,
 'references-count': 3,
 'relation': {},
 'score': 1.0,
 'short-container-title': ['Cad. Saúde Pública'],
 'short-title': [],
 'source': 'Crossref',
 'subject': ['Medicine(all)'],
 'subtitle': [],
 'title': ['Congenital Zika virus syndrome'],
 'type': 'journal-article',
 'volume': '32'}

Filter

See valid parameters in Works.FILTER_VALIDATOR. Replace . with __ and - with _ when using parameters.

In [1] from cross.restful import Works

In [2]: works = Works()

In [3]: for i in works.filter(license__url='https://creativecommons.org/licenses/by', from_pub_date='2016').sample(5).select('title'):
   ...: print(i)
   ...:
{'title': ['Vers une économie circulaire... de proximité ? Une spatialité à géométrie variable']}
{'title': ['The stakeholders of the Olympic System']}
{'title': ["Un cas de compensation écologique dans le secteur minier : la réserve forestière Dékpa (Côte d'Ivoire) au secours des forêts et des populations locales"]}
{'title': ['A simple extension of FFT-based methods to strain gradient loadings - Application to the homogenization of beams and plates with linear and non-linear behaviors']}
{'title': ['Gestion des déchets ménagers dans la ville de Kinshasa : Enquête sur la perception des habitants et propositions']}

Select

See valid parameters in Works.FIELDS_SELECT

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: for i in works.filter(has_funder='true', has_license='true').sample(5).select('DOI, prefix'):
   ...:     print(i)
   ...:
{'DOI': '10.1111/str.12144', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1111'}
{'DOI': '10.1002/admi.201400154', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1002'}
{'DOI': '10.1016/j.surfcoat.2010.10.057', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1007/s10528-015-9707-8', 'member': 'http://id.crossref.org/member/297', 'prefix': '10.1007'}
{'DOI': '10.1016/j.powtec.2016.04.009', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}

In [4]: for i in works.filter(has_funder='true', has_license='true').sample(5).select(['DOI', 'prefix']):
   ...:     print(i)
   ...:
{'DOI': '10.1002/jgrd.50059', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1002'}
{'DOI': '10.1111/ajt.13880', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1111'}
{'DOI': '10.1016/j.apgeochem.2015.05.006', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1016/j.triboint.2015.01.023', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1007/s10854-016-4649-4', 'member': 'http://id.crossref.org/member/297', 'prefix': '10.1007'}

In [5]: for i in works.filter(has_funder='true', has_license='true').sample(5).select('DOI').select('prefix'):
   ...:     print(i)
   ...:
{'DOI': '10.1002/mrm.25790', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1002'}
{'DOI': '10.1016/j.istruc.2016.11.001', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1002/anie.201505015', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1002'}
{'DOI': '10.1016/j.archoralbio.2010.11.011', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1145/3035918.3064012', 'member': 'http://id.crossref.org/member/320', 'prefix': '10.1145'}

In [6]: for i in works.filter(has_funder='true', has_license='true').sample(5).select('DOI', 'prefix'):
   ...:     print(i)
   ...:
{'DOI': '10.1016/j.cplett.2015.11.062', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1016/j.bjp.2015.06.001', 'member': 'http://id.crossref.org/member/78', 'prefix': '10.1016'}
{'DOI': '10.1111/php.12613', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1111'}
{'DOI': '10.1002/cfg.144', 'member': 'http://id.crossref.org/member/98', 'prefix': '10.1155'}
{'DOI': '10.1002/alr.21987', 'member': 'http://id.crossref.org/member/311', 'prefix': '10.1002'}

Facet

In [1]: from crossref.restful import Works, Prefixes

In [2]: works = Works()

In [3]: works.facet('issn', 10)
Out[3]:
{'issn': {'value-count': 10,
  'values': {'http://id.crossref.org/issn/0009-2975': 306546,
   'http://id.crossref.org/issn/0028-0836': 395353,
   'http://id.crossref.org/issn/0140-6736': 458909,
   'http://id.crossref.org/issn/0302-9743': 369955,
   'http://id.crossref.org/issn/0931-7597': 487523,
   'http://id.crossref.org/issn/0959-8138': 392754,
   'http://id.crossref.org/issn/1095-9203': 253978,
   'http://id.crossref.org/issn/1468-5833': 388355,
   'http://id.crossref.org/issn/1556-5068': 273653,
   'http://id.crossref.org/issn/1611-3349': 329573}}}

In [4]: prefixes = Prefixes()

In [5]: prefixes.works('10.1590').facet('issn', 10)
Out[5]:
{'issn': {'value-count': 10,
  'values': {'http://id.crossref.org/issn/0004-282X': 7712,
   'http://id.crossref.org/issn/0034-8910': 4752,
   'http://id.crossref.org/issn/0037-8682': 4179,
   'http://id.crossref.org/issn/0074-0276': 7941,
   'http://id.crossref.org/issn/0100-204X': 3946,
   'http://id.crossref.org/issn/0100-4042': 4198,
   'http://id.crossref.org/issn/0102-311X': 6548,
   'http://id.crossref.org/issn/0103-8478': 6607,
   'http://id.crossref.org/issn/1413-8123': 4658,
   'http://id.crossref.org/issn/1516-3598': 4678}}}

In [6]: prefixes.works('10.1590').query('zika').facet('issn', 10)
Out[6]:
{'issn': {'value-count': 10,
  'values': {'http://id.crossref.org/issn/0004-282X': 4,
   'http://id.crossref.org/issn/0036-4665': 4,
   'http://id.crossref.org/issn/0037-8682': 7,
   'http://id.crossref.org/issn/0074-0276': 7,
   'http://id.crossref.org/issn/0102-311X': 12,
   'http://id.crossref.org/issn/0103-7331': 2,
   'http://id.crossref.org/issn/0104-4230': 3,
   'http://id.crossref.org/issn/1519-3829': 7,
   'http://id.crossref.org/issn/1679-4508': 2,
   'http://id.crossref.org/issn/1806-8324': 2}}}

Journals

Exemplifying the use of API Library to retrieve data from Journals endpoint.

In [1]: from crossref.restful import Journals

In [2]: journals = Journals()

In [3]: journals.journal('0102-311X')
Out[3]:
{'ISSN': ['0102-311X', '0102-311X'],
 'breakdowns': {'dois-by-issued-year': [[2013, 462],
   [2007, 433],
   [2008, 416],
   [2009, 347],
   [2006, 344],
   [2014, 292],
   [2004, 275],
   [2012, 273],
   [2011, 270],
   [2010, 270],
   [2005, 264],
   [2003, 257],
   [2001, 220],
   [2002, 219],
   [1998, 187],
   [2000, 169],
   [1997, 142],
   [1999, 136],
   [1994, 110],
   [1995, 104],
   [1996, 103],
   [1993, 99],
   [2015, 93],
   [1992, 65],
   [1986, 63],
   [1985, 53],
   [1990, 49],
   [1988, 49],
   [1991, 48],
   [1987, 46],
   [1989, 45]]},
 'counts': {'backfile-dois': 5565, 'current-dois': 335, 'total-dois': 5900},
 'coverage': {'award-numbers-backfile': 0.0,
  'award-numbers-current': 0.0,
  'funders-backfile': 0.0,
  'funders-current': 0.0,
  'licenses-backfile': 0.0,
  'licenses-current': 0.0,
  'orcids-backfile': 0.0,
  'orcids-current': 0.0,
  'references-backfile': 0.0,
  'references-current': 0.0,
  'resource-links-backfile': 0.0,
  'resource-links-current': 0.0,
  'update-policies-backfile': 0.0,
  'update-policies-current': 0.0},
 'flags': {'deposits': True,
  'deposits-articles': True,
  'deposits-award-numbers-backfile': False,
  'deposits-award-numbers-current': False,
  'deposits-funders-backfile': False,
  'deposits-funders-current': False,
  'deposits-licenses-backfile': False,
  'deposits-licenses-current': False,
  'deposits-orcids-backfile': False,
  'deposits-orcids-current': False,
  'deposits-references-backfile': False,
  'deposits-references-current': False,
  'deposits-resource-links-backfile': False,
  'deposits-resource-links-current': False,
  'deposits-update-policies-backfile': False,
  'deposits-update-policies-current': False},
 'last-status-check-time': 1459491023622,
 'publisher': 'SciELO',
 'title': 'Cadernos de Saúde Pública'}

In [4]: journals.journal_exists('0102-311X')
Out[4]: True

In [5]: journals.query('Cadernos').url
Out[5]: 'https://api.crossref.org/journals?query=Cadernos'

In [6]: journals.query('Cadernos').count()
Out[6]: 60

In [7]: journals.works('0102-311X').query('zika').url
Out[7]: 'https://api.crossref.org/journals/0102-311X/works?query=zika'

In [8]: journals.works('0102-311X').query('zika').count()
Out[8]: 12

In [9]: journals.works('0102-311X').query('zika').query(author='Diniz').url
Out[9]: 'https://api.crossref.org/journals/0102-311X/works?query.author=Diniz&query=zika'

In [10]: journals.works('0102-311X').query('zika').query(author='Diniz').count()
Out[10]: 1

Base Methods

The base methods could be used along with the query, filter, sort, order and facet methods.

Version

This method returns the Crossref API version.

In [1]: from crossref.restful import Journals

In [2]: journals = Journals()

In [3]: journals.version
Out[3]: '1.0.0'

Count

This method returns the total number of items a query result should retrieve. This method will not iterate through and retrieve the API documents. This method will fetch 0 documents and retrieve the value of total-result attribute.

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: works.query('zika').count()
Out[3]: 3597

In [4]: works.query('zika').filter(from_online_pub_date='2017').count()
Out[4]: 444

Url

This method returns the url that will be used to query the Crossref API.

In [1]: from crossref.restful import Works

In [2]: works = Works()

In [3]: works.query('zika').url
Out[3]: 'https://api.crossref.org/works?query=zika'

In [4]: works.query('zika').filter(from_online_pub_date='2017').url
Out[4]: 'https://api.crossref.org/works?query=zika&filter=from-online-pub-date%3A2017'

In [5]: works.query('zika').filter(from_online_pub_date='2017').query(author='Mari').url
Out[5]: 'https://api.crossref.org/works?query.author=Mari&filter=from-online-pub-date%3A2017&query=zika'

In [6]: works.query('zika').filter(from_online_pub_date='2017').query(author='Mari').sort('published').url
Out[6]: 'https://api.crossref.org/works?query.author=Mari&query=zika&filter=from-online-pub-date%3A2017&sort=published'

In [7]: works.query('zika').filter(from_online_pub_date='2017').query(author='Mari').sort('published').order('asc').url
Out[7]: 'https://api.crossref.org/works?filter=from-online-pub-date%3A2017&query.author=Mari&order=asc&query=zika&sort=published'

In [8]: from crossref.restful import Prefixes

In [9]: prefixes = Prefixes()

In [10]: prefixes.works('10.1590').query('zike').url
Out[10]: 'https://api.crossref.org/prefixes/10.1590/works?query=zike'

In [11]: from crossref.restful import Journals

In [12]: journals = Journals()

In [13]: journals.url
Out[13]: 'https://api.crossref.org/journals'

In [14]: journals.works('0102-311X').url
Out[14]: 'https://api.crossref.org/journals/0102-311X/works'

In [15]: journals.works('0102-311X').query('zika').url
Out[15]: 'https://api.crossref.org/journals/0102-311X/works?query=zika'

In [16]: journals.works('0102-311X').query('zika').count()
Out[16]: 12

All

This method returns all items of an endpoint. It will use the limit offset parameters to iterate through the endpoints Journals, Types, Members and Prefixes.

For the works endpoint, the library will make use of the cursor to paginate through API until it is totally consumed.

In [1]: from crossref.restful import Journals

In [2]: journals = Journals()

In [3]: for item in journals.all():
   ...:     print(item['title'])
   ...:
JNSM
New Comprehensive Biochemistry
New Frontiers in Ophthalmology
Oral Health Case Reports
Orbit A Journal of American Literature
ORDO

Support for Polite Requests (Etiquette)

Respecting the Crossref API polices for polite requests. This library allows users to setup an Etiquette object to be used in the http requests.

In [1]: from crossref.restful import Works, Etiquette

In [2]: my_etiquette = Etiquette('My Project Name', 'My Project version', 'My Project URL', 'My contact email')

In [3]: str(my_etiquette)
Out[3]: 'My Project Name/My Project version (My Project URL; mailto:My contact email) BasedOn: CrossrefAPI/1.1.0'

In [4]: my_etiquette = Etiquette('My Project Name', '0.2alpha', 'https://myalphaproject.com', 'anonymous@myalphaproject.com')

In [5]: str(my_etiquette)
Out[5]: 'My Project Name/0.2alpha (https://myalphaproject.com; mailto:anonymous@myalphaproject.com) BasedOn: CrossrefAPI/1.1.0'

In [6]: works = Works(etiquette=my_etiquette)

In [7]: for i in works.sample(5).select('DOI'):
   ...:     print(i)
   ...:

{'DOI': '10.1016/j.ceramint.2014.10.086'}
{'DOI': '10.1016/j.biomaterials.2012.02.034'}
{'DOI': '10.1001/jamaoto.2013.6450'}
{'DOI': '10.1016/s0021-9290(17)30138-0'}
{'DOI': '10.1109/ancs.2011.11'}

Voilá!!! The requests made for the Crossref API, were made setting the user-agent as: 'My Project Name/0.2alpha (https://myalphaproject.com; mailto:anonymous@myalphaproject.com) BasedOn: CrossrefAPI/1.1.0'

Depositing Metadata to Crossref

This library implements the deposit operation "doMDUpload", it means you are able to submit Digital Objects Metadata to Crossref. Se more are: https://support.crossref.org/hc/en-us/articles/214960123

To do that, you must have an active publisher account with crossref.org.

First of all, you need a valid XML following the crossref DTD.

<?xml version='1.0' encoding='utf-8'?>
<doi_batch xmlns:jats="http://www.ncbi.nlm.nih.gov/JATS1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.crossref.org/schema/4.4.0" version="4.4.0" xsi:schemaLocation="http://www.crossref.org/schema/4.4.0 http://www.crossref.org/schemas/crossref4.4.0.xsd">
  <head>
    <doi_batch_id>c5473e12dc8e4f36a40f76f8eae15280</doi_batch_id>
    <timestamp>20171009132847</timestamp>
    <depositor>
      <depositor_name>SciELO</depositor_name>
      <email_address>crossref@scielo.org</email_address>
    </depositor>
    <registrant>SciELO</registrant>
  </head>
  <body>
    <journal>
      <journal_metadata>
        <full_title>Revista Brasileira de Ciência Avícola</full_title>
        <abbrev_title>Rev. Bras. Cienc. Avic.</abbrev_title>
        <issn media_type="electronic">1516-635X</issn>
      </journal_metadata>
      <journal_issue>
        <publication_date media_type="print">
          <month>09</month>
          <year>2017</year>
        </publication_date>
        <journal_volume>
          <volume>19</volume>
        </journal_volume>
        <issue>3</issue>
      </journal_issue>
      <journal_article publication_type="full_text" reference_distribution_opts="any">
        <titles>
          <title>Climatic Variation: Effects on Stress Levels, Feed Intake, and Bodyweight of Broilers</title>
        </titles>
        <contributors>
          <person_name contributor_role="author" sequence="first">
            <given_name>R</given_name>
            <surname>Osti</surname>
            <affiliation>Huazhong Agricultural University,  China</affiliation>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>D</given_name>
            <surname>Bhattarai</surname>
            <affiliation>Huazhong Agricultural University,  China</affiliation>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>D</given_name>
            <surname>Zhou</surname>
            <affiliation>Huazhong Agricultural University,  China</affiliation>
          </person_name>
        </contributors>
        <publication_date media_type="print">
          <month>09</month>
          <year>2017</year>
        </publication_date>
        <pages>
          <first_page>489</first_page>
          <last_page>496</last_page>
        </pages>
        <publisher_item>
          <identifier id_type="pii">S1516-635X2017000300489</identifier>
        </publisher_item>
        <doi_data>
          <doi>10.1590/1806-9061-2017-0494</doi>
          <resource>http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S1516-635X2017000300489&amp;lng=en&amp;tlng=en</resource>
        </doi_data>
        <citation_list>
          <citation key="ref1">
            <journal_title>Journal of Agriculture Science</journal_title>
            <author>Alade O</author>
            <volume>5</volume>
            <first_page>176</first_page>
            <cYear>2013</cYear>
            <article_title>Perceived effect of climate variation on poultry production in Oke Ogun area of Oyo State</article_title>
          </citation>

          ...

          <citation key="ref40">
            <journal_title>Poultry Science</journal_title>
            <author>Zulkifli I</author>
            <volume>88</volume>
            <first_page>471</first_page>
            <cYear>2009</cYear>
            <article_title>Crating and heat stress influence blood parameters and heat shock protein 70 expression in broiler chickens showing short or long tonic immobility reactions</article_title>
          </citation>
        </citation_list>
      </journal_article>
    </journal>
  </body>
</doi_batch>

Second! Using the library

In [1]: from crossref.restful import Depositor

In [2]: request_xml = open('tests/fixtures/deposit_xml_sample.xml', 'r').read()

In [3]: depositor = Depositor('your prefix', 'your crossref user', 'your crossref password')

In [4]: response = depositor.register_doi('testing_20171011', request_xml)

In [5]: response.status_code
Out[5]: 200

In [6]: response.text
Out[6]: '\n\n\n\n<html>\n<head><title>SUCCESS</title>\n</head>\n<body>\n<h2>SUCCESS</h2>\n<p>Your batch submission was successfully received.</p>\n</body>\n</html>\n'

In [7]: response = depositor.request_doi_status_by_filename('testing_20171011.xml')

In [8]: response.text
Out[8]: '<?xml version="1.0" encoding="UTF-8"?>\n<doi_batch_diagnostic status="queued">\r\n  <submission_id>1415653976</submission_id>\r\n  <batch_id />\r\n</doi_batch_diagnostic>'

In [9]: response = depositor.request_doi_status_by_filename('testing_20171011.xml')

In [10]: response.text
Out[10]: '<?xml version="1.0" encoding="UTF-8"?>\n<doi_batch_diagnostic status="queued">\r\n  <submission_id>1415653976</submission_id>\r\n  <batch_id />\r\n</doi_batch_diagnostic>'

In [11]: response = depositor.request_doi_status_by_filename('testing_20171011.xml', data_type='result')

In [12]: response.text
Out[12]: '<?xml version="1.0" encoding="UTF-8"?>\n<doi_batch_diagnostic status="queued">\r\n  <submission_id>1415653976</submission_id>\r\n  <batch_id />\r\n</doi_batch_diagnostic>'

In [13]: response = depositor.request_doi_status_by_filename('testing_20171011.xml', data_type='contents')

In [14]: response.text
Out[14]: '<?xml version=\'1.0\' encoding=\'utf-8\'?>\n<doi_batch xmlns:jats="http://www.ncbi.nlm.nih.gov/JATS1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.crossref.org/schema/4.4.0" version="4.4.0" xsi:schemaLocation="http://www.crossref.org/schema/4.4.0 http://www.crossref.org/schemas/crossref4.4.0.xsd">\n  <head>\n    <doi_batch_id>c5473e12dc8e4f36a40f76f8eae15280</doi_batch_id>\n    <timestamp>20171009132847</timestamp>\n    <depositor>\n      <depositor_name>SciELO</depositor_name>\n      <email_address>crossref@scielo.org</email_address>\n    </depositor>\n    <registrant>SciELO</registrant>\n  </head>\n  <body>\n    <journal>\n      <journal_metadata>\n        <full_title>Revista Brasileira de Ciência Avícola</full_title>\n        <abbrev_title>Rev. Bras. Cienc. Avic.</abbrev_title>\n        <issn media_type="electronic">1516-635X</issn>\n      </journal_metadata>\n      <journal_issue>\n        <publication_date media_type="print">\n          <month>09</month>\n          <year>2017</year>\n        </publication_date>\n        <journal_volume>\n          <volume>19</volume>\n        </journal_volume>\n        <issue>3</issue>\n      </journal_issue>\n      <journal_article publication_type="full_text" reference_distribution_opts="any">\n        <titles>\n          <title>Climatic Variation: Effects on Stress Levels, Feed Intake, and Bodyweight of Broilers</title>\n        </titles>\n        <contributors>\n          <person_name contributor_role="author" sequence="first">\n            <given_name>R</given_name>\n            <surname>Osti</surname>\n            <affiliation>Huazhong Agricultural University,  China</affiliation>\n          </person_name>\n          <person_name contributor_role="author" sequence="additional">\n            <given_name>D</given_name>\n            <surname>Bhattarai</surname>\n            <affiliation>Huazhong Agricultural University,  China</affiliation>\n          </person_name>\n          <person_name contributor_role="author" sequence="additional">\n            <given_name>D</given_name>\n            <surname>Zhou</surname>\n            <affiliation>Huazhong Agricultural University,  China</affiliation>\n          </person_name>\n        </contributors>\n        <publication_date media_type="print">\n          <month>09</month>\n          <year>2017</year>\n        </publication_date>\n        <pages>\n          <first_page>489</first_page>\n          <last_page>496</last_page>\n        </pages>\n        <publisher_item>\n          <identifier id_type="pii">S1516-635X2017000300489</identifier>\n        </publisher_item>\n</doi_batch>'

In [15]: response = depositor.request_doi_status_by_filename('testing_20171011.xml', data_type='result')

In [16]: response.text
Out[16]:
  <doi_batch_diagnostic status="completed" sp="ds4.crossref.org">
     <submission_id>1415649102</submission_id>
     <batch_id>9112073c7f474394adc01b82e27ea2a8</batch_id>
     <record_diagnostic status="Success">
        <doi>10.1590/0037-8682-0216-2016</doi>
        <msg>Successfully updated</msg>
        <citations_diagnostic>
           <citation key="ref1" status="resolved_reference">10.1590/0037-8682-0284-2014</citation>
           <citation key="ref2" status="resolved_reference">10.1371/journal.pone.0090237</citation>
           <citation key="ref3" status="resolved_reference">10.1093/infdis/172.6.1561</citation>
           <citation key="ref4" status="resolved_reference">10.1016/j.ijpara.2011.01.005</citation>
           <citation key="ref5" status="resolved_reference">10.1016/j.rvsc.2013.01.006</citation>
           <citation key="ref6" status="resolved_reference">10.1093/trstmh/tru113</citation>
           <citation key="ref7" status="resolved_reference">10.1590/0074-02760150459</citation>
        </citations_diagnostic>
     </record_diagnostic>
     <batch_data>
        <record_count>1</record_count>
        <success_count>1</success_count>
        <warning_count>0</warning_count>
        <failure_count>0</failure_count>
     </batch_data>
  </doi_batch_diagnostic>

Explaining the code

Line 1: Importing the Depositor Class

Line 2: Loading a valid XML for deposit

Line 3: Creating an instance of Depositor. You should use you crossref credentials at this point. If you wana be polite, you should also give an etiquette object at this momment.

.. block-code:: python

  etiquette = Etiquette('My Project Name', 'My Project version', 'My Project URL', 'My contact email')
  Depositor('your prefix', 'your crossref user', 'your crossref password', etiquette)

Line 4: Requesting the DOI (Id do not means you DOI was registered, it is just a DOI Request)

Line 5: Checking the DOI request response.

Line 6: Printing the DOI request response body.

Line 7: Requesting the DOI registering status.

Line 8: Checking the DOI registering status, reading the body of the response. You should parse this XML to have the current status of the DOI registering request. You should do this util have an success or error status retrieved.

Line 9-12: Rechecking the request status. It is still in queue. You can also set the response type between ['result', 'contents'], where result will retrieve the status of the DOI registering process, and contents will retrieve the submitted XML content while requesting the DOI.

Line 13-14: Checking the content submitted passing the attribute data_type='contents'.

Line 15-16: After a while, the success status was received.