__str__ method returns accounts sorted by name

Test Output

F
======================================================================
FAIL: test_unit_test (__main__.UnitTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/root/sandbox15062f22/nt-test-34a69074.py", line 55, in test_unit_test
    self.assertEqual(out, expected)
AssertionError: 'Name: Name1\nPIN: 1000\nBalance: 100.0\nName: N[307 chars]00.0' != 'Name:    Name1\nPIN:     1000\nBalance: 100.0\n[370 chars]00.0'
- Name: Name1
+ Name:    Name1
?      +++
- PIN: 1000
+ PIN:     1000
?     ++++
  Balance: 100.0
- Name: Name2
+ Name:    Name2
?      +++
- PIN: 1001
+ PIN:     1001
?     ++++
  Balance: 100.0
- Name: Name3
+ Name:    Name3
?      +++
- PIN: 1002
+ PIN:     1002
?     ++++
  Balance: 100.0
- Name: Name4
+ Name:    Name4
?      +++
- PIN: 1003
+ PIN:     1003
?     ++++
  Balance: 100.0
- Name: Name5
+ Name:    Name5
?      +++
- PIN: 1004
+ PIN:     1004
?     ++++
  Balance: 100.0
- Name: Name6
+ Name:    Name6
?      +++
- PIN: 1005
+ PIN:     1005
?     ++++
  Balance: 100.0
- Name: Name7
+ Name:    Name7
?      +++
- PIN: 1006
+ PIN:     1006
?     ++++
  Balance: 100.0
- Name: Name8
+ Name:    Name8
?      +++
- PIN: 1007
+ PIN:     1007
?     ++++
  Balance: 100.0
- Name: Name9
+ Name:    Name9
?      +++
- PIN: 1008
+ PIN:     1008
?     ++++
  Balance: 100.0

----------------------------------------------------------------------
Ran 1 test in 0.018s

FAILED (failures=1)
Test Contents
def testBank(number = 0):
    """Returns a bank with the specified number of accounts and/or
    the accounts loaded from the specified file name."""
    bank = Bank()
    for i in reversed(range(number)):
        bank.add(SavingsAccount('Name' + str(i + 1),
                                str(1000 + i),
                                100.00))
    return bank

import io
from contextlib import redirect_stdout

class UnitTests(unittest.TestCase):
    def test_unit_test(self):
        self.maxDiff = 1500
        bank = testBank(9)

        output = io.StringIO()
        with redirect_stdout(output):
            print(bank)
        out = output.getvalue()
        out = out.strip()

        expected = """Name:    Name1
PIN:     1000
Balance: 100.0
Name:    Name2
PIN:     1001
Balance: 100.0
Name:    Name3
PIN:     1002
Balance: 100.0
Name:    Name4
PIN:     1003
Balance: 100.0
Name:    Name5
PIN:     1004
Balance: 100.0
Name:    Name6
PIN:     1005
Balance: 100.0
Name:    Name7
PIN:     1006
Balance: 100.0
Name:    Name8
PIN:     1007
Balance: 100.0
Name:    Name9
PIN:     1008
Balance: 100.0"""

        self.assertEqual(out, expected)