0           RESUME                   0

  1           LOAD_CONST               0 (('F', 'D', 'C', 'B', 'A'))
              STORE_NAME               0 (LABELS)

  4           LOAD_CONST               1 (<code object percent_change at 0x1096c6e20, file "ledger.py", line 4>)
              MAKE_FUNCTION
              STORE_NAME               1 (percent_change)

 10           LOAD_CONST               2 (<code object grade at 0x1097c4580, file "ledger.py", line 10>)
              MAKE_FUNCTION
              STORE_NAME               2 (grade)

 23           LOAD_CONST               3 (<code object total at 0x1096c72d0, file "ledger.py", line 23>)
              MAKE_FUNCTION
              STORE_NAME               3 (total)

 30           LOAD_CONST               4 (<code object grade_label at 0x1096c7690, file "ledger.py", line 30>)
              MAKE_FUNCTION
              STORE_NAME               4 (grade_label)
              RETURN_CONST             5 (None)

Disassembly of <code object percent_change at 0x1096c6e20, file "ledger.py", line 4>:
  4           RESUME                   0

  5           LOAD_FAST                0 (before)
              LOAD_CONST               1 (0)
              COMPARE_OP              88 (bool(==))
              POP_JUMP_IF_FALSE        1 (to L1)

  6           RETURN_CONST             1 (0)

  7   L1:     LOAD_FAST_LOAD_FAST     16 (after, before)
              BINARY_OP               10 (-)
              LOAD_CONST               2 (100)
              BINARY_OP                5 (*)
              LOAD_FAST                0 (before)
              BINARY_OP                2 (//)
              RETURN_VALUE

Disassembly of <code object grade at 0x1097c4580, file "ledger.py", line 10>:
 10           RESUME                   0

 11           LOAD_FAST                0 (score)
              LOAD_CONST               1 (10)
              BINARY_OP                2 (//)
              STORE_FAST               1 (bucket)

 12           LOAD_FAST                1 (bucket)
              LOAD_CONST               2 (9)
              COMPARE_OP             188 (bool(>=))
              POP_JUMP_IF_FALSE        1 (to L1)

 13           RETURN_CONST             3 (4)

 14   L1:     LOAD_FAST                1 (bucket)
              LOAD_CONST               4 (8)
              COMPARE_OP              88 (bool(==))
              POP_JUMP_IF_FALSE        1 (to L2)

 15           RETURN_CONST             5 (3)

 16   L2:     LOAD_FAST                1 (bucket)
              LOAD_CONST               6 (7)
              COMPARE_OP              88 (bool(==))
              POP_JUMP_IF_FALSE        1 (to L3)

 17           RETURN_CONST             7 (2)

 18   L3:     LOAD_FAST                1 (bucket)
              LOAD_CONST               8 (6)
              COMPARE_OP              88 (bool(==))
              POP_JUMP_IF_FALSE        1 (to L4)

 19           RETURN_CONST             9 (1)

 20   L4:     RETURN_CONST            10 (0)

Disassembly of <code object total at 0x1096c72d0, file "ledger.py", line 23>:
 23           RESUME                   0

 24           LOAD_CONST               1 (0)
              STORE_FAST               1 (s)

 25           LOAD_FAST                0 (values)
              GET_ITER
      L1:     FOR_ITER                 7 (to L2)
              STORE_FAST               2 (v)

 26           LOAD_FAST_LOAD_FAST     18 (s, v)
              BINARY_OP               13 (+=)
              STORE_FAST               1 (s)
              JUMP_BACKWARD            9 (to L1)

 25   L2:     END_FOR
              POP_TOP

 27           LOAD_FAST                1 (s)
              RETURN_VALUE

Disassembly of <code object grade_label at 0x1096c7690, file "ledger.py", line 30>:
 30           RESUME                   0

 31           LOAD_GLOBAL              0 (LABELS)
              LOAD_GLOBAL              3 (grade + NULL)
              LOAD_FAST                0 (score)
              CALL                     1
              BINARY_SUBSCR
              RETURN_VALUE