Python library of Amazon Associates Web Service を Product Advertising API に対応させました。電子署名とか・・・。追加点は新API仕様のとおりです。解説がめんどいので、diff 貼ります。
+import hashlib
+import hmac
+import base64
-Version = '2009-02-01'
+Version = '2009-03-31'
def _get_url(self, kw):
- url = 'http://%s/onca/xml?Service=%s&AWSAccessKeyId=%s&Version=%s&' % (
- supported_locales[self.locale],
- Service,
- self.AWSAccessKeyId,
- Version,
- )
if not kw:
kw = {}
+ kw['Service'] = Service
+ kw['Version'] = Version
+ kw['AWSAccessKeyId'] = self.AccessKeyId
+ kw['Timestamp'] = datetime.datetime.utcnow().isoformat()
if (not 'AssociateTag' in kw) or (not kw['AssociateTag'] and self.AssociateTag):
kw['AssociateTag'] = self.AssociateTag
if (not 'MerchantId' in kw) or (not kw['MerchantId'] and self.MerchantId):
kw['MerchantId'] = self.MerchantId
if (not 'Validate' in kw) or (not kw['Validate'] and Validate):
kw['Validate'] = Validate
- url += '&'.join(['%s=%s' % (k, urllib.quote(unicode(v))) \
- for (k, v) in kw.items() if v])
- return url
+ [kw.pop(k) for (k, v) in kw.items() if not v]
+ payload = urllib.urlencode(sorted(kw.items()))
+ urllib2.quote
+ strings = [
+ 'GET',
+ supported_locales[self.locale],
+ end_point,
+ payload
+ ]
+ digest = hmac.new(
+ self.SecretAccessKey,
+ '\n'.join(strings),
+ hashlib.sha256
+ ).digest()
+ signature = base64.b64encode(digest)
+ return 'http://%(uri)s%(end_point)s?%(payload)s&Signature=%(signature)s' % {
+ 'uri':supported_locales[self.locale],
+ 'end_point':end_point,
+ 'payload':payload,
+ 'signature':signature,
+ }
詳細の diff は bitbucket （なんちゅうブログやｗ） へ。ノットリファクタリング。使い方が変わったところは、Secret Access Key が必須になったところぐらいです。
import awws
- api = Api('[取得した Access Key Id]')
+ api = Api('[取得した Access Key Id]', '[取得した Secret Access Key]')
