added try clause to verify and refund transaction

Author: OthnielDona

kkiapay/core.py

@@ -36,7 +36,11 @@ def __init__(self, public_key, private_key, secret, sandbox=False):
 
     def verify_transaction(self, transaction_id):
         payload = {"transactionId": transaction_id}
-        r = requests.post(self.transaction_url, data=payload, headers=self.headers)
+
+        try:
+            r = requests.post(self.url, data=payload, headers=self.headers)
+        except requests.exceptions.ConnectionError:
+            return print('Sorry! There is a problem with your connection.')
 
         return json.loads(
             r.text,
@@ -47,7 +51,11 @@ def verify_transaction(self, transaction_id):
 
     def refund_transaction(self, transaction_id):
         payload = {"transactionId": transaction_id}
-        r = requests.post(self.url, data=payload, headers=self.headers)
+
+        try:
+            r = requests.post(self.url, data=payload, headers=self.headers)
+        except requests.exceptions.ConnectionError:
+            return print('Sorry! There is a problem with your connection.')
 
         return json.loads(
             r.text,