Bank account

A tiny bank that follows a list of instructions and never lets the balance go below zero.

"deposit 50".split() breaks the string at its spaces into ["deposit", "50"]. The amount is still text, so convert it with int(). Check that there is enough money before a withdrawal changes the balance; a refused withdrawal simply does nothing.

Write final_balance(actions). Each action is a string such as "deposit 50" or "withdraw 20". Start at 0, apply the actions in order, and refuse any withdrawal that would take the balance below 0. Return the final balance.

def final_balance(actions):
    balance = 0
    for action in actions:
        parts = action.split()
        # parts[0] is the word, parts[1] is the amount
    return balance

Click Run to see the output here.

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Bank account

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