diff --git a/bnp_pdf_statement_parser.py b/bnp_pdf_statement_parser.py
index d257fff..7646fd1 100755
--- a/bnp_pdf_statement_parser.py
+++ b/bnp_pdf_statement_parser.py
@@ -9,9 +9,9 @@ import matplotlib.pyplot as plt
 import matplotlib.ticker as ticker
 from datetime import datetime
 
-path = f'/home/benjamin/Desktop/bens_folder/bazaar/documents/bnp/bank_statements/compte_de_cheques/'
+PATH = f'/home/benjamin/Desktop/bens_folder/bazaar/documents/bnp/bank_statements/compte_de_cheques/'
 
-os.chdir(path)
+os.chdir(PATH)
 
 '''
 Assuming file hierarchy like:
@@ -30,10 +30,10 @@ def execute(command):
 def getTextFromPdf(pdfPath):
     return execute(['pdftotext', '-raw', pdfPath, '-'])
 
-firstLineOfPaymentRegex = re.compile('\\d{2}\\.\\d{2} \\d{2}\\.\\d{2} \\d+,\\d{2}')
-endPageAfterTheFirstOneRegex = re.compile('P\\. \\d+/\\d+')
-soldeCrediteurAuRegex = re.compile('SOLDE CREDITEUR AU \\d{2}\\.\\d{2}\\.\\d{4}')
-totalDesOperationsRegex = re.compile('TOTAL\\ DES\\ OPERATIONS\\ ([0-9 ]+,\\d{2})\\ ([0-9 ]+,\\d{2})')
+FIRST_LINE_OF_PAYMENT_REGEX = re.compile('\\d{2}\\.\\d{2} \\d{2}\\.\\d{2} \\d+,\\d{2}')
+END_PAGE_AFTER_THE_FIRST_ONE_REGEX = re.compile('P\\. \\d+/\\d+')
+SOLDE_CREDITEUR_AU_REGEX = re.compile('SOLDE CREDITEUR AU \\d{2}\\.\\d{2}\\.\\d{4}')
+TOTAL_DES_OPERATIONS_REGEX = re.compile('TOTAL\\ DES\\ OPERATIONS\\ ([0-9 ]+,\\d{2})\\ ([0-9 ]+,\\d{2})')
 
 PRINT_TRANSACTIONS = False
 
@@ -61,9 +61,9 @@ for folder in sorted(os.listdir()):
         for line in lines:
             if not started:
                 # We are interested in the content after this line:
-                if soldeCrediteurAuRegex.match(line) is not None or (line.startswith('Date Nature des opérations Valeur Débit Crédit') and not firstPage):
-                    if soldeCrediteurAuRegex.match(line):
-                        initialAmount = float(soldeCrediteurAuRegex.sub('', line).replace(',', '.').replace(' ', ''))
+                if SOLDE_CREDITEUR_AU_REGEX.match(line) is not None or (line.startswith('Date Nature des opérations Valeur Débit Crédit') and not firstPage):
+                    if SOLDE_CREDITEUR_AU_REGEX.match(line):
+                        initialAmount = float(SOLDE_CREDITEUR_AU_REGEX.sub('', line).replace(',', '.').replace(' ', ''))
                         currentAmount = initialAmount
                         print('Initial amount', initialAmount)
                         print()
@@ -72,13 +72,13 @@ for folder in sorted(os.listdir()):
                     continue
             else:
                 # We aren't interested in the content after this line:
-                if line.startswith('BNP PARIBAS SA au capital de') or endPageAfterTheFirstOneRegex.match(line) is not None:
+                if line.startswith('BNP PARIBAS SA au capital de') or END_PAGE_AFTER_THE_FIRST_ONE_REGEX.match(line) is not None:
                     firstPage = False
                     started = False
                     continue
                 # We aren't interested in the content after this line
                 elif line.startswith('TOTAL DES OPERATIONS'):
-                    totalDesOperationsRegexMatch = totalDesOperationsRegex.match(line)
+                    totalDesOperationsRegexMatch = TOTAL_DES_OPERATIONS_REGEX.match(line)
                     totalMonthlyDebit, totalMonthlyCredit = [float(group.replace(',', '.').replace(' ', '')) for group in totalDesOperationsRegexMatch.groups()]
                     print(f'Total monthly debit: {totalMonthlyDebit}')
                     print(f'Total monthly credit: {totalMonthlyCredit}')
@@ -87,7 +87,7 @@ for folder in sorted(os.listdir()):
                     totalMonthlyDifference = totalMonthlyCredit - totalMonthlyDebit
                     totalMonthlyDifferences += [totalMonthlyDifference]
                     break
-                if firstLineOfPaymentRegex.match(line) is not None:
+                if FIRST_LINE_OF_PAYMENT_REGEX.match(line) is not None:
                     if date is not None and PRINT_TRANSACTIONS:
                         print(date, valeur, amount, currentAmount)
                         print('\n'.join(comment))