''' In this function, you will try to make a transfer between two user accounts. bank is a dictionary where the key is the username and the value is the user's account balance. log_in is a dictionary where the key is the username and the value is the user's log-in status. amount is the amount to be transferred between user accounts (userA and userB). amount is always positive. What you will do: - Deduct the given amount from userA and add it to userB, which makes a transfer. - You should consider some following cases: - userA must be in the bank and his/her log-in status in log_in must be True. - userB must be in log_in, regardless of log-in status. userB can be absent in the bank. - No user can have a negative amount in their account. He/she must have a positive or zero balance. Return True if a transfer is made. For example: - Calling transfer(bank, log_in, "BrandonK", "Jack", 100) will return False - Calling transfer(bank, log_in, "Brandon", "JackC", 100) will return False - After logging "Brandon" in, calling transfer(bank, log_in, "Brandon", "Jack", 10) will return True - Calling transfer(bank, log_in, "Brandon", "Jack", 200) will return False ''' function is: def transfer(bank, log_in, userA, userB, amount):
'''
In this function, you will try to make a transfer between two user accounts.
bank is a dictionary where the key is the username and the value is the user's account balance.
log_in is a dictionary where the key is the username and the value is the user's log-in status.
amount is the amount to be transferred between user accounts (userA and userB). amount is always positive.
What you will do:
- Deduct the given amount from userA and add it to userB, which makes a transfer.
- You should consider some following cases:
- userA must be in the bank and his/her log-in status in log_in must be True.
- userB must be in log_in, regardless of log-in status. userB can be absent in the bank.
- No user can have a negative amount in their account. He/she must have a positive or zero balance.
Return True if a transfer is made.
For example:
- Calling transfer(bank, log_in, "BrandonK", "Jack", 100) will return False
- Calling transfer(bank, log_in, "Brandon", "JackC", 100) will return False
- After logging "Brandon" in, calling transfer(bank, log_in, "Brandon", "Jack", 10) will return True
- Calling transfer(bank, log_in, "Brandon", "Jack", 200) will return False
'''
function is:
def transfer(bank, log_in, userA, userB, amount):
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