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Kiva.py
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198 lines (162 loc) · 6.85 KB
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import urllib2
import json
from types import *
from datetime import datetime
from urlparse import urljoin
from urllib import urlencode
import re
__version__ = 0.1
API_VERSION = 1
RE_DATE = re.compile('_?date$')
BASE_URL = 'http://api.kivaws.org/v%i/' % API_VERSION
FORMAT = "%Y-%m-%dT%H:%M:%SZ"
SEARCH_STATUS = ['fundraising','funded','in_repayment','paid','defaulted']
SEARCH_GENDER = ['male','female']
SEARCH_REGION = ['na','ca','sa','af','as','me','ee']
SEARCH_SORT = ['popularity','loan_amount','oldest','expiration',
'newest','amount_remaining','repayment_term']
def getRecentLendingActions():
return __make_call(
'lending_actions/recent.json', 'lending_actions')
def getLenderInfo(*lender_ids):
# need one lender, can have up to 50
if len(lender_ids) == 0:
raise("Must have at least 1 lender id")
elif len(lender_ids) > 50:
raise("Can have up to 50 lender ids; %i submitted" % len(lender_ids))
lids = ",".join(lender_ids)
return __make_call('lenders/%s.json' % lids, 'lenders')
def getLenderLoans(lender_id, page=1):
return __make_call('lenders/%s/loans.json?page=%i' % (lender_id, page),
'loans',
getLenderLoans, [lender_id])
def getNewestLoans(page=1):
return __make_call('loans/newest.json?page=%i' % page,
'loans', getNewestLoans)
def getLoans(*loan_ids):
if len(loan_ids) == 0 or len(loan_ids) > 10:
raise("You can request between 1 and 10 loans")
lids = ",".join(map(lambda x: str(x), loan_ids))
return __make_call('loans/%s.json' % lids, 'loans')
def getLenders(loan_id, page=1):
return __make_call('loans/%s/lenders.json?page=%i' % (str(loan_id), page),
'lenders', getLenders, [loan_id])
def getPartners(page=1):
return __make_call('partners.json?page=%i' % (page),
'partners', getPartners)
def getJournalEntries(loan_id, include_bulk=True, page=1):
ib = include_bulk and 1 or 0
return __make_call('loans/%s/journal_entries.json?page=%i&include_bulk=%s' % (str(loan_id), page, ib),
'journal_entries', getJournalEntries, [loan_id, include_bulk])
def getEntryComments(entry_id, page=1):
return __make_call('journal_entries/%s/comments.json?page=%i' % (str(entry_id), page),
'comments', getEntryComments, [entry_id])
def searchLoans(status=None, gender=None, sector=None, region=None,
country_code=None, partner=None, q=None,
sort_by=None, page=1):
opts = {'status':status, 'gender':gender, 'sector':sector,
'region':region, 'country_code':country_code,
'partner':partner, 'q':q, 'sort_by': sort_by}
# check params
status = __check_param(status, 'status', SEARCH_STATUS)
gender = __check_param(gender, 'gender', SEARCH_GENDER)
sector = __check_param(sector, 'sector')
region = __check_param(region, 'region', SEARCH_REGION)
country_code = __check_param(country_code, 'country code')
partner = __check_param(partner, 'partner')
q = __check_param(q, 'search string', single=True)
sort_by = __check_param(sort_by, 'sort_by', SEARCH_SORT, True)
qopts = {'status':status, 'gender':gender, 'sector':sector,
'region':region, 'country_code':country_code,
'partner':partner, 'q':q, 'sort_by': sort_by,
'page': page}
for k in filter(lambda x: qopts[x]=='', qopts):
del qopts[k]
url = 'loans/search.json?' + urlencode(qopts)
return __make_call(url, 'loans', searchLoans, opts)
def __check_param(value, name, allowed=None, single=False):
if not value:
return ''
bogus = None
if type(value) == type(''):
if value.lower() not in allowed:
print "%s not in %s" % (value.lower(), str(allowed))
bogus = [value]
else:
if single:
raise("%s must be a single value, not a list" % name)
if allowed:
bogus = filter(lambda x: x.lower() not in allowed, value)
value = ','.join(value)
if bogus:
print type(value)
raise("Invalid %s: %s. Must be one of %s" %
(name, ", ".join(bogus), ", ".join(allowed)))
return value
def __make_call(url, key=None, method=None, args=[]):
u = urllib2.urlopen(urljoin(BASE_URL, url))
raw = json.load(u)
u.close()
data = key and raw[key] or raw
obj = None
if type(data) == ListType:
obj = KivaList()
for tmp in data:
spam = KivaContainer(tmp)
obj.append(spam)
else:
obj = KivaContainer(data)
if raw.has_key('paging'):
current = raw['paging']['page']
total = raw['paging']['pages']
obj.current_page = current
obj.total_pages = total
obj.page_size = raw['paging']['page_size']
obj.total_count = raw['paging']['total']
obj.next_page = current < total and current +1 or None
obj.prev_page = current > 1 and current - 1 or None
if method:
if obj.next_page:
if type(args) == ListType:
qargs = args+[obj.next_page]
obj.getNextPage = lambda: method(*qargs)
else:
args['page'] = obj.next_page
obj.getNextPage = lambda: method(**args)
else:
obj.getNextPage = lambda: None
if obj.prev_page:
if type(args) == ListType:
qargs = args+[obj.prev_page]
obj.getPreviousPage = lambda: method(*qargs)
else:
args['page'] = obj.prev_page
obj.getPreviousPage = lambda: method(**args)
else:
obj.getPreviousPage = lambda: None
return obj
class KivaContainer(object):
def __init__(self, data=None):
if data:
self.parse(data)
def parse(self, data):
for key in data.keys():
value = data[key]
param = None
if type(value) == DictType:
param = KivaContainer(value)
elif RE_DATE.match(key):
param = datetime.strptime(value, FORMAT)
else:
param = value
self.__setattr__(key, param)
def __repr__(self):
return str(self.__dict__)
def __getitem__(self, key):
return self.__dict__[key]
def __setitem__(self, key, value):
self.__dict__[key] = value
def keys(self):
return self.__dict__.keys()
class KivaList(list, object):
pass