This will fix missing currency from given HansaWorld input file.

hw_invoice_fix.py

#!/usr/bin/env python
import sys 
import os
__author__ = "Andres Kepler"
__copyright__ = "Copyright 2017,0XFF"
__license__ = "GPL"
__version__ = "0.1"
__email__ = "andres@kepler.ee"

#Usage: Export from integration module base regster desired invoice
#./hw_invoice_fix.py 1703403.TXT
#This will output 1703403.TXT_fix.txt file
#Next import from base module fixed file. This will overwrite invoice

if len(sys.argv) < 2:
        sys.exit('Usage: %s txt filename' % sys.argv[0])

if not os.path.exists(sys.argv[1]):
        sys.exit('ERROR: txt file %s was not found!' % sys.argv[1])

with open(sys.argv[1]+'_fix'+'.txt','wb') as output:
    with open(sys.argv[1]) as input:
        lc=0
        lines = input.readlines()[0].split('\r')
        for line in lines:
            if lc==1:
                newline="1\t44\t1\t1\r"
                output.write(newline)
            elif lc==12:
                newline=line.split('\t')
                if newline[33]!='EUR':
                    newline[33] = 'EUR'
                    print("FIX")
                    output.write('\t'.join(newline)+"\r")
                else:
                    print("Not found")
                    output.write(line+"\r")
            else:
                output.write(line+"\r")
            lc+=1