77from urllib import parse
88
99
10-
11-
1210class Payu :
1311
1412 # Hash Sequence for transaction
1513 __HASH_SEQUENCE = "key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5|||||"
1614 __RESPONSE_SEQUENCE = "salt|status||||||udf5|udf4|udf3|udf2|udf1|email|firstname|productinfo|amount|txnid"
1715 __API_HASH_SEQUENCE = "key|command|var1"
16+
1817 def __init__ (self , merchant_key , merchant_salt , mode = 'Test' ):
1918
2019 self .key = merchant_key
@@ -40,9 +39,10 @@ def generate_hash(self, *args, **kwargs):
4039 hash_string += ''
4140 hash_string += '|'
4241 hash_string += self .salt
43- hash_value = hashlib .sha512 (hash_string .encode ('utf-8' )).hexdigest ().lower ()
42+ hash_value = hashlib .sha512 (
43+ hash_string .encode ('utf-8' )).hexdigest ().lower ()
4444 logging .info ("Hash generation has completed" )
45- return hash_value
45+ return hash_value
4646
4747 def make_html (self , data ):
4848 """
@@ -52,7 +52,7 @@ def make_html(self, data):
5252 request_payload = ['key' , 'txnid' , 'productinfo' ,
5353 'amount' , 'email' , 'firstname' , 'lastname' , 'surl' ,
5454 'surl' , 'furl' , 'phone' , 'hash' , 'udf1' , 'udf2' , 'udf3' ,
55- 'udf4' ,'udf5'
55+ 'udf4' , 'udf5'
5656 ]
5757 for input_val in request_payload :
5858 if data .get (input_val ):
@@ -110,7 +110,8 @@ def __generate_response_hash(self, *args, **kwargs):
110110 hash_string += f'{ self .key } '
111111 if add_charge :
112112 hash_string = f'{ add_charge } |{ hash_string } '
113- generated_hash = hashlib .sha512 (hash_string .encode ('utf-8' )).hexdigest ().lower ()
113+ generated_hash = hashlib .sha512 (
114+ hash_string .encode ('utf-8' )).hexdigest ().lower ()
114115 return hash_string , generated_hash
115116
116117 def __error_codes (self , reqstd_code ):
@@ -126,7 +127,8 @@ def check_transaction(self, *args, **kwargs):
126127 Verify Transaction from Payu.
127128 Check the payment gateway response.
128129 """
129- hash_string , hash_value = self .__generate_response_hash (* args , ** kwargs )
130+ hash_string , hash_value = self .__generate_response_hash (
131+ * args , ** kwargs )
130132 response_hash = kwargs .get ('hash' )
131133 hash_response = {
132134 "hash_string" : hash_string ,
@@ -161,7 +163,8 @@ def __api_hash(self, *args, **kwargs):
161163 for hash_str in hash_seq_list :
162164 hash_string += f"{ str (kwargs .get (hash_str , '' ))} |"
163165 hash_string += f'{ self .salt } '
164- generated_hash = hashlib .sha512 (hash_string .encode ('utf-8' )).hexdigest ().lower ()
166+ generated_hash = hashlib .sha512 (
167+ hash_string .encode ('utf-8' )).hexdigest ().lower ()
165168 return hash_string , generated_hash
166169
167170 def __make_request (self , method = "POST" , ** kwargs ):
@@ -176,7 +179,8 @@ def __make_request(self, method="POST", **kwargs):
176179 }
177180 payload = self .__payload_encode (** kwargs )
178181 url = PAYU_CONFIGS [f'api_{ self .mode } ' ]
179- response = requests .request (method , url , data = payload , headers = headers )
182+ response = requests .request (
183+ method , url , data = payload , headers = headers )
180184 return response .json ()
181185 except requests .exceptions .HTTPError as http_error :
182186 raise Exception (f"Http Error: { str (http_error )} " )
@@ -197,7 +201,8 @@ def verify_payment(self, *args, **kwargs):
197201 reconcile with PayU’s database once you receive the response.
198202 """
199203 if len (kwargs .get ('transaction_id' )) == 0 :
200- raise KeyError (" Requested data doesn't contains required field: transaction_id" )
204+ raise KeyError (
205+ " Requested data doesn't contains required field: transaction_id" )
201206 kwargs ['command' ] = "verify_payment"
202207 kwargs ['var1' ] = "|" .join (kwargs .pop ('transaction_id' ))
203208 response = self .__make_request (** kwargs )
@@ -212,7 +217,8 @@ def check_payment(self, *args, **kwargs):
212217 whereas the input parameter in verify_payment API is the TxnID (Transaction ID generated at your end).
213218 """
214219 if not kwargs .get ('payment_id' ):
215- raise KeyError (f" Requested data doesn't contains required field: payment_id" )
220+ raise KeyError (
221+ f" Requested data doesn't contains required field: payment_id" )
216222 kwargs ['command' ] = "check_payment"
217223 kwargs ['var1' ] = kwargs .pop ('payment_id' )
218224 response = self .__make_request (** kwargs )
@@ -223,13 +229,13 @@ def get_wsonline_response(self, *args, **kwargs):
223229 This API is used to get the transaction response sent on surl/furl.
224230 """
225231 if not kwargs .get ('transaction_id' ):
226- raise KeyError (" Requested data doesn't contains required field: transaction_id" )
232+ raise KeyError (
233+ " Requested data doesn't contains required field: transaction_id" )
227234 kwargs ['command' ] = "get_ws_response"
228235 kwargs ['var1' ] = kwargs .pop ('transaction_id' )
229236 response = self .__make_request (** kwargs )
230237 return response
231238
232-
233239 def get_transaction_details (self , * args , ** kwargs ):
234240 """
235241 This API is used to extract the transaction details between two given time periods.
@@ -243,15 +249,15 @@ def get_transaction_details(self, *args, **kwargs):
243249
244250 for key in ['date_from' , 'date_to' ]:
245251 if not kwargs .get (key ):
246- raise KeyError (f"To get transaction details required parameter is missing { key } " )
252+ raise KeyError (
253+ f"To get transaction details required parameter is missing { key } " )
247254
248255 kwargs ['command' ] = "get_Transaction_Details"
249256 kwargs ['var1' ] = kwargs .pop ('date_from' )
250257 kwargs ['var2' ] = kwargs .pop ('date_to' )
251258 response = self .__make_request (** kwargs )
252259 return response
253260
254-
255261 def get_transaction_info (self , * args , ** kwargs ):
256262 """
257263 This API works exactly the same way as get_Transaction_Details API.
@@ -265,16 +271,15 @@ def get_transaction_info(self, *args, **kwargs):
265271 """
266272 for key in ['date_time_from' , 'date_time_to' ]:
267273 if not kwargs .get (key ):
268- raise KeyError (f"To get transaction details required parameter is missing { key } " )
274+ raise KeyError (
275+ f"To get transaction details required parameter is missing { key } " )
269276
270277 kwargs ['command' ] = "get_transaction_info"
271278 kwargs ['var1' ] = kwargs .pop ('date_time_from' )
272279 kwargs ['var2' ] = kwargs .pop ('date_time_to' )
273280 response = self .__make_request (** kwargs )
274281 return response
275282
276-
277-
278283 def get_tdr (self , * args , ** kwargs ):
279284 """
280285 This API is used to get the TDR value of a transaction with PayU. It is a simple API
@@ -283,7 +288,8 @@ def get_tdr(self, *args, **kwargs):
283288 to the output.
284289 """
285290 if len (kwargs .get ('payment_id' )) == 0 :
286- raise KeyError (" Requested data doesn't contains required field: payment_id" )
291+ raise KeyError (
292+ " Requested data doesn't contains required field: payment_id" )
287293 kwargs ['command' ] = "get_TDR"
288294 kwargs ['var1' ] = kwargs .get ('payment_id' )
289295 response = self .__make_request (** kwargs )
@@ -313,7 +319,7 @@ def refund(self, *args, **kwargs):
313319 "beneficiary_ifsc":""
314320 }
315321 """
316- for col in ['payment_id' , 'refund_id' , 'amount' ]:
322+ for col in ['payment_id' , 'refund_id' , 'amount' ]:
317323 if not kwargs .get (col ):
318324 raise KeyError (f"{ col } mandatory missing in request payload " )
319325
@@ -341,6 +347,3 @@ def refund_status(self, *args, **kwargs):
341347 kwargs ['command' ] = "check_action_status"
342348 response = self .__make_request (** kwargs )
343349 return response
344-
345-
346-
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