Implementing Payment and Tax System for Open-Event

So I implemented the payment system and tax system for the payment part in the ticketing system. The first step was making a list of available countries and currency options for the system. So I created and added the following list:

PAYMENT_COUNTRIES = {
    'United States',
    'Argentina',
    'Australia',
    'Austria',
    'Belgium',
    'Brazil',
    'Canada',
    'Cyprus',
    'Czech Republic',
    'Denmark',
    'Estonia',
    'Finland',
    'France',
    'Germany',
    'Greece',
    'Hong Kong',
    'Hungary',
    'Ireland',
    'Israel',
    'Italy',
    'Japan',
    'Latvia',
    'Lithuania',
    'Luxemborg',
    'Malaysia',
    'Malta',
    'Mexico',
    'Netherlands',
    'New Zealand',
    'Norway',
    'Philippines',
    'Poland',
    'Portugal',
    'Singapore',
    'Slovakia',
    'Slovenia',
    'Spain',
    'Sweden',
    'Switzerland',
    'Taiwan',
    'United Kingdom',
}

PAYMENT_CURRENCIES = {
    'ARS Argentine Peso $',
    'AUD Australian Dollars A$',
    'BRL Brazilian Real R$',
    'CAD Canadian Dollars C$',
    'CZK Czech Koruna Kč',
    'DKR Danish Krone Dkr',
    'EUR Euros €',
    'HKD Hong Kong Dollar HK$',
    'HUF Hungarian Forint Ft',
    'ILS Israeli Shekels ₪',
    'JPY Japanese Yen ¥',
    'MYR Malaysian Ringgits RM',
    'MXN Mexican Pesos Mex$',
    'NZD New Zealand Dollar NZ$',
    'NOK Norwegian Krone Nkr',
    'PHP Philippine Pesos ₱',
    'PLN Polish Zloty zł',
    'GBP Pounds Sterling £',
    'SGD Singapore Dollar SG$',
    'SEK Swedish Krona Skr',
    'CHF Swiss Franc Fr',
    'TWD Taiwan New Dollars NT$',
    'THB Thai baht ฿',
    'USD U.S. Dollars $',
}

This is the list of currently supported countries and currencies. Thus the user can choose from the above list in the following step on the first page of event creation:

1

If the user chooses a Paid ticket or a Donation ticket then he/she has to compulsorily choose a country and a currency for the event. Next in line is the system of payments – the way in which the organizer wants payments to be made for his/her event. They include the option of Online Payments and Offline Payments. The organizer has to tick the checkbox in order to enable the payment option. On enabling the PayPal and Stripe checkboxes he/she is represented with the following:

2

On enabling PayPal option the organizer has to enter the PayPal email and for Stripe he has to connect it with Stripe account.

And the final step is the addition of tax for the event. The organizer can choose whether he/she wants to enable tax for the event or not:

3

On choosing Yes he is presented with the tax form:

4

If the organizer wants to send invoices then on enabling invoices another form is displayed with details pertaining to Business Address, Registered Name etc….

5

Finally we have two options that whether we want to display the tax as separate fee or include in the price of tickets.