Initial version!

Convert camt.053 to CSV.py

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+# Takes a CAMT053 XML as input and converts it to a
+# comma separated values (CSV) file - e.g. for further analysis in Excel
+# Tested with ISO-20022 / CAMT.053 Files of Swiss Migrosbank
+# (see namespace definition below for file format version details)
+# Tested with python 3.9.4
+# CAMT.053 Specs
+    # https://www.swift.com/swift_resource/35371
+    # https://www.swift.com/search?keywords=camt.053&search-origin=onsite_search
+    # https://www.ebics.de/de/datenformate
+
+# 28. March 2023 Joerg Kummer
+
+import PySimpleGUI as sg
+import xml.etree.ElementTree as ET
+
+# CAMT.053 Namespace is used as the default namespace (i.e. empty string in code)
+# more namespaces can be included
+ns = {'': 'urn:iso:std:iso:20022:tech:xsd:camt.053.001.04'}
+
+# Keeping the CSV extension and comma as a separator means
+# the file can be opened in Windows/Excel by double-clicking it in Windows
+# Explorer and import dialogs can be skipped
+
+infile=""
+infile= sg.popup_get_file('Please select the file in CAMT.053 format',default_path=infile)
+if not infile: exit()
+
+outfile=infile+".csv"
+print (f"Converting to output CSV File at\n{outfile}");
+
+# separator in outfile
+p=","
+
+# load and parse the file
+tree = ET.parse(infile)
+# get the root node
+root = tree.getroot()
+
+# To allows double-clicking the CSV in Windows Explorer,
+# - comma should be the separator and
+# - encoding should be windows-1252
+f=open(outfile,"w",encoding='windows-1252')
+
+# Safe Access to Element.text
+# preventing python errors if the Element was not found etc
+def sa(elm,st):
+    s=elm.find(st,ns)
+    if s is None:
+        return ("-")
+    else:
+        return (s.text)       
+
+# Safe Access to Element.attr at path st with name n
+def sat(elm,st,n):
+    s=elm.find(st,ns)
+    if s is None:
+        return("-")
+    else:        
+        if n in s.attrib:
+            return (s.attrib[n])
+        else:
+            return ("-")
+
+def pr(elm,st):
+    f.write(sa(elm,st))
+    f.write(p)
+
+# print headers
+s=root.find('./BkToCstmrStmt/Stmt',ns)
+f.write(f"Kontoauszug\nKonto{p}{sa(s,'./Acct/Id/IBAN')}\nWährung{p}{sa(s,'./Acct/Ccy')}\nvon{p}{sa(s,'./FrToDt/FrDtTm')}\nbis{p}{sa(s,'./FrToDt/ToDtTm')}\nerstellt am{p}{sa(s,'./CreDtTm')}\n")
+f.write(f"Booking Date{p}Valuta Date{p}Reversed{p}Status{p}Additional Info{p}Additional Tx Info{p}Number of Transactions in Booking{p}Amount{p}Currency{p}Credit/Debitor{p}Debitor{p}Creditor\n")
+
+# Then iterate through the Ntry nodes - the bookings
+for entry in root.findall('.//Ntry',ns):
+
+    # A booking (entry) can consist of multiple transactions (tx)
+    # Each transaction can involve multiple creditors, debitors
+    # One row per transaction is appended to the CSV file, i.e. we
+    # iterate through all transactions
+    for tx in entry.findall('NtryDtls/TxDtls',ns):
+        pr(entry,'BookgDt/Dt')
+        pr(entry,'ValDt/Dt')
+        pr(entry,'RvslInd')
+        pr(entry,'Sts')
+        # adding double quotes for strings, which may contain a comma
+        a='"'+sa(entry,'AddtlNtryInf')+'",'; f.write(a)
+        a='"'+sa(tx,'AddtlTxInf')+'",'; f.write(a)
+
+        pr(entry,'NtryDtls/Btch/NbOfTxs')
+        pr(tx,'Amt')
+        f.write(sat(tx,'Amt','Ccy'));f.write(p)
+        pr(tx,'CdtDbtInd')
+        a='"'+sa(tx,'RltdPties/Dbtr/Nm')+'",'; f.write(a)
+        a='"'+sa(tx,'RltdPties/Cdtr/Nm')+'",'; f.write(a)
+        f.write("\n")
+
+f.close()