Convert Google Contacts CSV export to Grandstream's dubious XML file format

convert.py

#!/usr/bin/env python3

import csv
import re
import sys
from xml.dom.minidom import getDOMImplementation

contacts = []

# strip unwanted characters from strings
def clean(s):
    s = s.replace('+49', '0')
    s = s.replace('+', '00')
    return ''.join(n for n in s if n.isdigit())

# Import Contacts
with open(sys.argv[1], encoding='utf-16-le') as csvfile:
    records = csv.DictReader(csvfile)
    noFax = re.compile(".*fax.*", re.IGNORECASE)
    for record in records:
        contact = {
            'FirstName': record['Given Name'],
            'LastName': record['Family Name'],
            'Company' : record['Organization 1 - Name'],
            'numbers': []
        }

        for number in range(1, 4):
            typ = 'Phone {} - Type'.format(number)
            val = 'Phone {} - Value'.format(number)
            if (record[typ] and not noFax.match(record[typ])):
                # Grandstream uses three types of phone numbers,
                # "Work", "Cell", "Home"
                record[typ] = 'Cell' if record[typ] == 'Mobile' else record[typ]

                # Split field value - multiple numbers of the same
                # type are stuffed into a single field, sepatated
                # by ':::'
                for n in map(clean, record[val].split(':::')):
                    contact['numbers'].append({
                        'type': record[typ],
                        'value': n
                    })

        # Only use this contact if it has any phone number
        if len(contact['numbers']):
            contacts.append(contact)

impl = getDOMImplementation()

xml = impl.createDocument(None, "AddressBook", None)
top_element = xml.documentElement
for contact in contacts:
    c = xml.createElement('Contact')

    # Names
    for part in ['FirstName', 'LastName', 'Company']:
        if not contact[part]:
            continue

        f = xml.createElement(part)
        f.appendChild(xml.createTextNode(contact[part]))
        c.appendChild(f)

    # Numbers
    for number in contact['numbers']:
        group = xml.createElement('Phone')
        group.setAttribute('type', number['type'])

        # phonenumber
        num = xml.createElement('phonenumber')
        num.appendChild(xml.createTextNode(number['value']))
        group.appendChild(num)

        # accountindex
        idx = xml.createElement('accountindex')
        idx.appendChild(xml.createTextNode('0'))
        group.appendChild(idx)

        c.appendChild(group)

    top_element.appendChild(c)

print(xml.toprettyxml(encoding='UTF-8').decode())

Hallo bekomme immer diesen fehler beim ausführen.mfg

Just try to change it to another encoding type, I make it working with ISO-8859-1 in Italy.