i cant seem to figure out the error

Sun Apr 3 14:21:45 EDT 2016

On 2016年04月03日 18:34, Jason Friedman wrote:
>>>> - Create a method called `withdraw` that takes in cash withdrawal amount
>> and updates the balance accordingly. if amount is greater than balance
>> return `"invalid transaction"`
>>>> def withdraw(self, amount):
>> self.amount=amount
>> if(amount > self.balance):
>> return ("Amount greater than available balance.")
>> else:
>> self.balance -= amount
>> return self.balance
>>>> The instructions say to "return 'invalid transaction'" but I expect they
> really want that error printed to STDERR (typically your screen) rather
> than literally returned. Try this:
>> def withdraw(self, amount):
> self.amount=amount
> if(amount > self.balance):
> print "Amount greater than available balance, no funds withdrawn."
> else:
> self.balance -= amount
> return self.balance
>The instructions say "return", not "print" and the report contains:
self.assertEqual(self.my_account.withdraw(1000), "invalid transaction", 
msg='Invalid transaction')
so it _is_ checking the returned result of 'withdraw'.
Not Pythonic (neither is printing to stderr! :-)), but that's something 
that can be worked on later.