import csv
import json

csvfile = open('allievi.csv', 'r')
jsonfile = open('file.json', 'w')

reader = csv.reader(csvfile)
next(reader, None)  # skip the headers

for row in reader:
    data = {}
    data['nome'] = row[1]
    data['cognome'] = row[2]
    data['livello'] = int(row[0].split()[1])  # assuming 'Beginner 1' should become 1
    data['sede'] = 0  # static value
    data['telefono'] = row[3]
    data['instagram'] = '@' + row[1]  # assuming Instagram handle is @<name>
    data['email'] = row[4] if row[4] else ""  # default email if not provided
    data['pagamenti'] = []
    data['presenze'] = []
    json.dump(data, jsonfile)
    jsonfile.write('\n')