You are working on the python-babel/babel repository. The source code is checked out at /testbed at commit…

You are working on the python-babel/babel repository. The source code is checked out at /testbed at commit…: a task in SWE-Lego-RL-2699 (Harbor dataset). For currencies the functions babel.numbers.is currency and babel.numbers.normalize currency accept quite a few values (None, strings, numbers…

The task

For currencies the functions `babel.numbers.is_currency` and `babel.numbers.normalize_currency` accept quite a few values (None, strings, numbers, lists, sets) and return the expected result (a boolean or a string).

Part of Lego-X/Lego-RL-2699.