Convert JSON exported contacts from Telegram to vCard (.vcf)

converter.py

import sys
import json

input_file = sys.argv[1]
output_file = sys.argv[2]

output_file = open(output_file, 'w')

def to_vcf_string(first_name, last_name, phone):
    vcf_lines = []
    vcf_lines.append('BEGIN:VCARD')
    vcf_lines.append('VERSION:4.0')
    vcf_lines.append('N:%s' % (last_name + ';' + first_name))
    vcf_lines.append('FN:%s' % (first_name + ('' if len(last_name) == 0 else ' ') + last_name))
    vcf_lines.append('TEL:%s' % phone)
    vcf_lines.append('END:VCARD')
    vcf_string = '\n'.join(vcf_lines) + '\n'
    return vcf_string

with open(input_file) as json_file:
    data = json.load(json_file)
    contacts_list = data['contacts']['list']
    for contact in contacts_list:
        first_name = contact['first_name']
        last_name = contact['last_name']

        if len(first_name) == 0 and len(last_name) == 0:
            continue
        
        phone = contact['phone_number']

        output_file.write(to_vcf_string(first_name, last_name, phone).encode('utf-8'))

output_file.close()

Hi. Just run the script passing json file path and desired output path as input like this: python converter.py json_file_path output_file_path. @MrWesturn

this version of edited code works for me, reads utf-8 characters from JSON file and writes bytes on the output file :

import sys
import json

input_file = sys.argv[1]
output_file = sys.argv[2]

output_file = open(output_file, 'wb')

def to_vcf_string(first_name, last_name, phone):
vcf_lines = [
'BEGIN:VCARD',
'VERSION:4.0',
f'N:{last_name};{first_name}',
f'FN:{first_name}{" " if last_name else ""}{last_name}',
f'TEL:{phone}',
'END:VCARD'
]
vcf_string = '\n'.join(vcf_lines) + '\n'
return vcf_string

with open(input_file, 'r', encoding='utf-8') as json_file:
data = json.load(json_file)
contacts_list = data['contacts']['list']
for contact in contacts_list:
first_name = contact['first_name']
last_name = contact['last_name']

    if len(first_name) == 0 and len(last_name) == 0:
        continue
    
    phone = contact['phone_number']

    output_file.write(to_vcf_string(first_name, last_name, phone).encode('utf-8'))

output_file.close()