refactor: use six instead of sys.version_info

payments/payment_gateways/doctype/razorpay_settings/razorpay_settings.py

@@ -65,8 +65,8 @@ import frappe
 from frappe import _
 import json
 import hmac
-import sys
 import hashlib
+import six
 from six.moves.urllib.parse import urlencode
 from frappe.model.document import Document
 from frappe.utils import get_url, call_hook_method, cint, get_timestamp
@@ -321,7 +321,7 @@ class RazorpaySettings(Document):
 			frappe.log_error(frappe.get_traceback())
 
 	def verify_signature(self, body, signature, key):
-		if sys.version_info[0] == 3:
+		if six.PY3:
 			key = bytes(key, 'utf-8')
 			body = bytes(body, 'utf-8')
 
@@ -331,7 +331,7 @@ class RazorpaySettings(Document):
 
 		generated_signature = dig.hexdigest()
 
-		if sys.version_info[0:3] < (2, 7, 7):
+		if six.PY2:
 			result = self.compare_string(generated_signature, signature)
 		else:
 			result = hmac.compare_digest(generated_signature, signature)