qcoud_aqi修改

@@ -42,6 +42,15 @@ class QcloudApi():
             sign = self.signature(params, req_url)
             params['Signature'] = sign
             response_dict = requests.post("https://" + req_url, data=params).json()
+        elif api_version == 3:
+            public_params = {'Region': QcloudApi.Region, 'Timestamp': int(time.time()), 'Nonce': int(QcloudApi.generate_nonce()), 'Version': '2017-03-12', 'SecretId': self.secretId, 'SignatureMethod':'HmacSHA1'}
+            # merge params
+            params = dict(params, **public_params)
+            # signature
+            req_url = req_url.rstrip('/')+'/'
+            sign = self.signature(params, req_url)
+            params['Signature'] = sign
+            response_dict = requests.post("https://" + req_url, data=params).json()
         return response_dict
 
     @staticmethod