@@ -35,11 +35,11 @@ def assert_has_attributes(self, obj, expected_attributes):
3535 self .assert_has_attributes (actual_value , expected_value )
3636 elif callable (expected_value ):
3737 # Handle type checks and regex patterns
38- self .assertTrue (expected_value (actual_value ), f "Expected { key } to match predicate, got { actual_value } " )
38+ self .assertTrue (expected_value (actual_value ), "Expected {} to match predicate, got {}" . format ( key , actual_value ) )
3939 elif expected_value is not None :
40- self .assertEqual (expected_value , actual_value , f "Expected { key } to be { expected_value } , got { actual_value } " )
40+ self .assertEqual (expected_value , actual_value , "Expected {} to be {}, got {}" . format ( key , expected_value , actual_value ) )
4141 else :
42- self .assertIsNotNone (actual_value , f "Expected { key } to not be None" )
42+ self .assertIsNotNone (actual_value , "Expected {} to not be None" . format ( key ) )
4343
4444 def generate_us_bank_account_nonce_via_open_banking (self ):
4545 config = Configuration (
@@ -87,7 +87,7 @@ def generate_us_bank_account_nonce_via_open_banking(self):
8787 'Content-Type' : 'application/json' ,
8888 'Accept' : 'application/json' ,
8989 'Braintree-Version' : '2019-01-01' ,
90- 'User-Agent' : f 'Braintree Python Library { braintree .version .Version } ' ,
90+ 'User-Agent' : 'Braintree Python Library {}' . format ( braintree .version .Version ) ,
9191 'X-ApiVersion' : Configuration .api_version ()
9292 }
9393
@@ -100,11 +100,11 @@ def generate_us_bank_account_nonce_via_open_banking(self):
100100 )
101101
102102 if response .status_code != 200 :
103- raise Exception (f 'HTTP error { response . status_code } : { response .text } ' )
104-
103+ raise Exception ('HTTP error {}: {}' . format ( response .status_code , response . text ) )
104+
105105 response_data = response .json ()
106106 if 'tenant_token' not in response_data :
107- raise Exception (f 'Open Banking tokenization failed: { response_data } ' )
107+ raise Exception ('Open Banking tokenization failed: {}' . format ( response_data ) )
108108
109109 return response_data ['tenant_token' ]
110110
@@ -116,7 +116,7 @@ def test_create_jwt_creates_a_jwt_with_valid_request(self):
116116
117117 result = self .gateway .bank_account_instant_verification .create_jwt (request )
118118
119- self .assertTrue (result .is_success , f "Expected success but got errors: { getattr (result , 'errors' , 'none' )} " )
119+ self .assertTrue (result .is_success , "Expected success but got errors: {}" . format ( getattr (result , 'errors' , 'none' )) )
120120 self .assertIsNotNone (result .bank_account_instant_verification_jwt )
121121 self .assertIsNotNone (result .bank_account_instant_verification_jwt .jwt )
122122 self .assertNotEqual ("" , result .bank_account_instant_verification_jwt .jwt )
@@ -167,7 +167,7 @@ def test_charge_us_bank_creates_transaction_directly_with_nonce_and_provides_ach
167167
168168 transaction_result = self .us_bank_gateway .transaction .sale (transaction_request )
169169
170- self .assertTrue (transaction_result .is_success , f "Expected transaction success but got failure with validation errors" )
170+ self .assertTrue (transaction_result .is_success , "Expected transaction success but got failure with validation errors" )
171171 transaction = transaction_result .transaction
172172
173173 expected_transaction = {
@@ -210,7 +210,7 @@ def test_open_finance_flow_tokenizes_bank_account_via_open_finance_api_vaults_wi
210210 }
211211
212212 payment_method_result = self .us_bank_gateway .payment_method .create (payment_method_request )
213- self .assertTrue (payment_method_result .is_success , f "Expected payment method creation success but got failure with validation errors" )
213+ self .assertTrue (payment_method_result .is_success , "Expected payment method creation success but got failure with validation errors" )
214214
215215 us_bank_account = payment_method_result .payment_method
216216
@@ -242,7 +242,7 @@ def test_open_finance_flow_tokenizes_bank_account_via_open_finance_api_vaults_wi
242242 }
243243
244244 transaction_result = self .us_bank_gateway .transaction .sale (transaction_request )
245- self .assertTrue (transaction_result .is_success , f "Expected transaction success but got failure" )
245+ self .assertTrue (transaction_result .is_success , "Expected transaction success but got failure" )
246246 transaction = transaction_result .transaction
247247
248248 expected_transaction = {
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