diff --git a/payments/payment_gateways/doctype/braintree_settings/braintree_settings.py b/payments/payment_gateways/doctype/braintree_settings/braintree_settings.py
index 17330d7..35481c6 100644
--- a/payments/payment_gateways/doctype/braintree_settings/braintree_settings.py
+++ b/payments/payment_gateways/doctype/braintree_settings/braintree_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2018, Frappe Technologies and contributors
 # License: MIT. See LICENSE
 
@@ -184,7 +183,7 @@ class BraintreeSettings(Document):
 			)
 
 	def get_payment_url(self, **kwargs):
-		return get_url("./integrations/braintree_checkout?{0}".format(urlencode(kwargs)))
+		return get_url(f"./integrations/braintree_checkout?{urlencode(kwargs)}")
 
 	def create_payment_request(self, data):
 		self.data = frappe._dict(data)
diff --git a/payments/payment_gateways/doctype/braintree_settings/test_braintree_settings.py b/payments/payment_gateways/doctype/braintree_settings/test_braintree_settings.py
index 475a62b..38d8909 100644
--- a/payments/payment_gateways/doctype/braintree_settings/test_braintree_settings.py
+++ b/payments/payment_gateways/doctype/braintree_settings/test_braintree_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2018, Frappe Technologies and Contributors
 # License: MIT. See LICENSE
 import unittest
diff --git a/payments/payment_gateways/doctype/paypal_settings/paypal_settings.py b/payments/payment_gateways/doctype/paypal_settings/paypal_settings.py
index 3568b77..99c4992 100644
--- a/payments/payment_gateways/doctype/paypal_settings/paypal_settings.py
+++ b/payments/payment_gateways/doctype/paypal_settings/paypal_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies and contributors
 # License: MIT. See LICENSE
 
@@ -193,7 +192,7 @@ class PayPalSettings(Document):
 		params.update(
 			{
 				"METHOD": "SetExpressCheckout",
-				"returnUrl": get_url("{0}.get_express_checkout_details".format(api_path)),
+				"returnUrl": get_url(f"{api_path}.get_express_checkout_details"),
 				"cancelUrl": get_url("/payment-cancel"),
 				"PAYMENTREQUEST_0_PAYMENTACTION": "SALE",
 				"PAYMENTREQUEST_0_AMT": kwargs["amount"],
@@ -331,7 +330,7 @@ def confirm_payment(token):
 				).run_method("on_payment_authorized", "Completed")
 				frappe.db.commit()
 
-			redirect_url = "/integrations/payment-success?doctype={0}&docname={1}".format(
+			redirect_url = "/integrations/payment-success?doctype={}&docname={}".format(
 				data.get("reference_doctype"), data.get("reference_docname")
 			)
 		else:
@@ -404,7 +403,7 @@ def create_recurring_profile(token, payerid):
 				).run_method("on_payment_authorized", status_changed_to)
 				frappe.db.commit()
 
-			redirect_url = "/integrations/payment-success?doctype={0}&docname={1}".format(
+			redirect_url = "/integrations/payment-success?doctype={}&docname={}".format(
 				data.get("reference_doctype"), data.get("reference_docname")
 			)
 		else:
@@ -427,11 +426,9 @@ def get_redirect_uri(doc, token, payerid):
 	data = json.loads(doc.data)
 
 	if data.get("subscription_details") or data.get("subscription_id"):
-		return get_url(
-			"{0}.create_recurring_profile?token={1}&payerid={2}".format(api_path, token, payerid)
-		)
+		return get_url(f"{api_path}.create_recurring_profile?token={token}&payerid={payerid}")
 	else:
-		return get_url("{0}.confirm_payment?token={1}".format(api_path, token))
+		return get_url(f"{api_path}.confirm_payment?token={token}")
 
 
 def manage_recurring_payment_profile_status(profile_id, action, args, url):
@@ -474,7 +471,7 @@ def ipn_handler():
 			queue="long",
 			timeout=600,
 			is_async=True,
-			**{"doctype": "Integration Request", "docname": doc.name}
+			**{"doctype": "Integration Request", "docname": doc.name},
 		)
 
 	except frappe.InvalidStatusError:
diff --git a/payments/payment_gateways/doctype/paytm_settings/paytm_settings.py b/payments/payment_gateways/doctype/paytm_settings/paytm_settings.py
index d8c9159..81a5f45 100644
--- a/payments/payment_gateways/doctype/paytm_settings/paytm_settings.py
+++ b/payments/payment_gateways/doctype/paytm_settings/paytm_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2020, Frappe Technologies and contributors
 # License: MIT. See LICENSE
 
@@ -37,7 +36,7 @@ class PaytmSettings(Document):
 		integration_request = create_request_log(kwargs, service_name="Paytm")
 		kwargs.update(dict(order_id=integration_request.name))
 
-		return get_url("./integrations/paytm_checkout?{0}".format(urlencode(kwargs)))
+		return get_url(f"./integrations/paytm_checkout?{urlencode(kwargs)}")
 
 
 def get_paytm_config():
diff --git a/payments/payment_gateways/doctype/paytm_settings/test_paytm_settings.py b/payments/payment_gateways/doctype/paytm_settings/test_paytm_settings.py
index d9e72e3..91b69d5 100644
--- a/payments/payment_gateways/doctype/paytm_settings/test_paytm_settings.py
+++ b/payments/payment_gateways/doctype/paytm_settings/test_paytm_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2020, Frappe Technologies and Contributors
 # License: MIT. See LICENSE
 # import frappe
diff --git a/payments/payment_gateways/doctype/razorpay_settings/razorpay_settings.py b/payments/payment_gateways/doctype/razorpay_settings/razorpay_settings.py
index b133198..a79e626 100644
--- a/payments/payment_gateways/doctype/razorpay_settings/razorpay_settings.py
+++ b/payments/payment_gateways/doctype/razorpay_settings/razorpay_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies and contributors
 # License: MIT. See LICENSE
 
@@ -124,9 +123,7 @@ class RazorpaySettings(Document):
 		        "quantity": 1 (The total amount is calculated as item.amount * quantity)
 		}
 		"""
-		url = "https://api.razorpay.com/v1/subscriptions/{0}/addons".format(
-			kwargs.get("subscription_id")
-		)
+		url = "https://api.razorpay.com/v1/subscriptions/{}/addons".format(kwargs.get("subscription_id"))
 
 		try:
 			if not frappe.conf.converted_rupee_to_paisa:
@@ -195,7 +192,7 @@ class RazorpaySettings(Document):
 
 	def get_payment_url(self, **kwargs):
 		integration_request = create_request_log(kwargs, service_name="Razorpay")
-		return get_url("./integrations/razorpay_checkout?token={0}".format(integration_request.name))
+		return get_url(f"./integrations/razorpay_checkout?token={integration_request.name}")
 
 	def create_order(self, **kwargs):
 		# Creating Orders https://razorpay.com/docs/api/orders/
@@ -257,7 +254,7 @@ class RazorpaySettings(Document):
 
 		try:
 			resp = make_get_request(
-				"https://api.razorpay.com/v1/payments/{0}".format(self.data.razorpay_payment_id),
+				f"https://api.razorpay.com/v1/payments/{self.data.razorpay_payment_id}",
 				auth=(settings.api_key, settings.api_secret),
 			)
 
@@ -303,7 +300,7 @@ class RazorpaySettings(Document):
 				if custom_redirect_to:
 					redirect_to = custom_redirect_to
 
-			redirect_url = "payment-success?doctype={0}&docname={1}".format(
+			redirect_url = "payment-success?doctype={}&docname={}".format(
 				self.data.reference_doctype, self.data.reference_docname
 			)
 		else:
@@ -339,7 +336,7 @@ class RazorpaySettings(Document):
 
 		try:
 			resp = make_post_request(
-				"https://api.razorpay.com/v1/subscriptions/{0}/cancel".format(subscription_id),
+				f"https://api.razorpay.com/v1/subscriptions/{subscription_id}/cancel",
 				auth=(settings.api_key, settings.api_secret),
 			)
 		except Exception:
@@ -383,14 +380,14 @@ def capture_payment(is_sandbox=False, sanbox_response=None):
 				settings = controller.get_settings(data)
 
 				resp = make_get_request(
-					"https://api.razorpay.com/v1/payments/{0}".format(data.get("razorpay_payment_id")),
+					"https://api.razorpay.com/v1/payments/{}".format(data.get("razorpay_payment_id")),
 					auth=(settings.api_key, settings.api_secret),
 					data={"amount": data.get("amount")},
 				)
 
 				if resp.get("status") == "authorized":
 					resp = make_post_request(
-						"https://api.razorpay.com/v1/payments/{0}/capture".format(data.get("razorpay_payment_id")),
+						"https://api.razorpay.com/v1/payments/{}/capture".format(data.get("razorpay_payment_id")),
 						auth=(settings.api_key, settings.api_secret),
 						data={"amount": data.get("amount")},
 					)
@@ -403,7 +400,7 @@ def capture_payment(is_sandbox=False, sanbox_response=None):
 			doc.status = "Failed"
 			doc.error = frappe.get_traceback()
 			doc.save()
-			frappe.log_error(doc.error, "{0} Failed".format(doc.name))
+			frappe.log_error(doc.error, f"{doc.name} Failed")
 
 
 @frappe.whitelist(allow_guest=True)
@@ -498,7 +495,7 @@ def razorpay_subscription_callback():
 			queue="long",
 			timeout=600,
 			is_async=True,
-			**{"doctype": "Integration Request", "docname": doc.name}
+			**{"doctype": "Integration Request", "docname": doc.name},
 		)
 
 	except frappe.InvalidStatusError:
@@ -521,7 +518,7 @@ def validate_payment_callback(data):
 	settings = controller.get_settings(data)
 
 	resp = make_get_request(
-		"https://api.razorpay.com/v1/subscriptions/{0}".format(subscription_id),
+		f"https://api.razorpay.com/v1/subscriptions/{subscription_id}",
 		auth=(settings.api_key, settings.api_secret),
 	)
 
diff --git a/payments/payment_gateways/doctype/stripe_settings/stripe_settings.py b/payments/payment_gateways/doctype/stripe_settings/stripe_settings.py
index bc8b0df..8e1d383 100644
--- a/payments/payment_gateways/doctype/stripe_settings/stripe_settings.py
+++ b/payments/payment_gateways/doctype/stripe_settings/stripe_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2017, Frappe Technologies and contributors
 # License: MIT. See LICENSE
 
@@ -163,7 +162,7 @@ class StripeSettings(Document):
 	def validate_stripe_credentails(self):
 		if self.publishable_key and self.secret_key:
 			header = {
-				"Authorization": "Bearer {0}".format(
+				"Authorization": "Bearer {}".format(
 					self.get_password(fieldname="secret_key", raise_exception=False)
 				)
 			}
@@ -190,7 +189,7 @@ class StripeSettings(Document):
 				)
 
 	def get_payment_url(self, **kwargs):
-		return get_url("./integrations/stripe_checkout?{0}".format(urlencode(kwargs)))
+		return get_url(f"./integrations/stripe_checkout?{urlencode(kwargs)}")
 
 	def create_request(self, data):
 		import stripe
diff --git a/payments/payment_gateways/doctype/stripe_settings/test_stripe_settings.py b/payments/payment_gateways/doctype/stripe_settings/test_stripe_settings.py
index e13359f..eed87bf 100644
--- a/payments/payment_gateways/doctype/stripe_settings/test_stripe_settings.py
+++ b/payments/payment_gateways/doctype/stripe_settings/test_stripe_settings.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2018, Frappe Technologies and Contributors
 # License: MIT. See LICENSE
 import unittest
diff --git a/payments/payments/doctype/payment_gateway/payment_gateway.py b/payments/payments/doctype/payment_gateway/payment_gateway.py
index 7eb4c54..74306ae 100644
--- a/payments/payments/doctype/payment_gateway/payment_gateway.py
+++ b/payments/payments/doctype/payment_gateway/payment_gateway.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and contributors
 # License: MIT. See LICENSE
 
diff --git a/payments/payments/doctype/payment_gateway/test_payment_gateway.py b/payments/payments/doctype/payment_gateway/test_payment_gateway.py
index 7176656..6900e79 100644
--- a/payments/payments/doctype/payment_gateway/test_payment_gateway.py
+++ b/payments/payments/doctype/payment_gateway/test_payment_gateway.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: MIT. See LICENSE
 import unittest