format_currency throws a KeyError when using the "es_AR" locale

[pedrogut]

Overview Description

format_currency throws a KeyError for any multiple of 1000000 when using the "es_AR" locale.

Steps to Reproduce

from babel.numbers import format_currency
format_currency(1000000, "ARS", locale="es_AR")

Actual Results

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pedro/Documents/project/venv/lib/python3.10/site-packages/babel/numbers.py", line 533, in format_currency
    return pattern.apply(
  File "/home/pedro/Documents/project/venv/lib/python3.10/site-packages/babel/numbers.py", line 1028, in apply
    get_currency_name(currency, value, locale))
  File "/home/pedro/Documents/project/venv/lib/python3.10/site-packages/babel/numbers.py", line 130, in get_currency_name
    return plural_names[currency][plural_form]
  File "/home/pedro/Documents/project/venv/lib/python3.10/site-packages/babel/localedata.py", line 238, in __getitem__
    orig = val = self._data[key]
KeyError: 'many'

Expected Results

'$\xa01.000.000,00'

Additional Information

This works fine for other values such as: 100000, 999999 and 1000001. But fails for any other multiple of 1000000 (2000000, 3000000, 4000000, etc.)

[jun66j5]

According to https://unicode.org/reports/tr35/tr35-numbers.html#4-currencies:

If no matching displayName element was found in the previous step, then look for a displayName element that matches count="other", starting in the current locale and then following the locale fallback chain up to, but not including root.

However, this step is not implemented in format_currency().

I posted pull request #872 for this issue.

[akx]

Fixed in #872. Thank you, @jun66j5!