Capstone · hard

45. A mini token ledger

Model balances and validated transfers.

Write class `Ledger` with `mint(to, amount)` and `transfer(frm, to, amount)` that raises `ValueError("insufficient balance")` if the sender lacks funds. Maintain `self.balances` as a dict.

Required in your answer: def mintdef transferraise ValueError

Runs via Pyodide

class Ledger:
    def __init__(self):
        self.balances = {}

    def mint(self, to, amount):
        # TODO
        pass

    def transfer(self, frm, to, amount):
        # TODO: raise ValueError if insufficient balance
        pass

Output appears here.

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