Sure, here is a step-by-step guide on how to define the function `sort_grades(tup1)`:

1. First, you need to convert the tuple `tup1` to a list. This is because tuples in Python are immutable, meaning they cannot be changed once created. On the other hand, lists are mutable and can be sorted. You can convert the tuple to a list by using the `list()` function. Let's call this list `list1`. Here is how you can do it:

```python
list1 = list(tup1)
```

2. Next, you need to sort `list1` according to the scores. You can use the built-in `sorted()` function in Python. The `sorted()` function takes three parameters: `iterable`, `key` and `reverse`.

- `iterable` is the sequence (string, tuple, etc.) or collection (set, dictionary, etc.) or an iterator object to be sorted.
- `key` is a function that serves as a key or a basis of sort comparison.
- `reverse` is a boolean value. If set to True, then the iterable would be sorted in reverse (descending) order.

In your case, `iterable` is `list1`, `key` should be a function that returns the second element of the tuple (i.e., the score), and `reverse` should be `True` because you want to sort the scores in descending order. Here is how you can do it:

```python
list1 = sorted(list1, key=lambda x: x[1], reverse=True)
```

3. Finally, you need to convert `list1` back to a tuple and return it. You can convert the list to a tuple by using the `tuple()` function. Here is how you can do it:

```python
return tuple(list1)
```

So, the complete function `sort_grades(tup1)` would look like this:

```python
def sort_grades(tup1):
list1 = list(tup1)
list1 = sorted(list1, key=lambda x: x[1], reverse=True)
return tuple(list1)
```

You can test this function with your example:

```python
tup1 = (('Bob', 47), ('Claire', 61), ('Dominic', 79))
print(sort_grades(tup1)) # prints (('Dominic', 79), ('Claire', 61), ('Bob', 47))
```

Question

Sure, here is a step-by-step guide on how to define the function `sort_grades(tup1)`:

1. First, you need to convert the tuple `tup1` to a list. This is because tuples in Python are immutable, meaning they cannot be changed once created. On the other hand, lists are mutable and can be sorted. You can convert the tuple to a list by using the `list()` function. Let's call this list `list1`. Here is how you can do it:

```python
list1 = list(tup1)
```

2. Next, you need to sort `list1` according to the scores. You can use the built-in `sorted()` function in Python. The `sorted()` function takes three parameters: `iterable`, `key` and `reverse`.

- `iterable` is the sequence (string, tuple, etc.) or collection (set, dictionary, etc.) or an iterator object to be sorted.
   - `key` is a function that serves as a key or a basis of sort comparison.
   - `reverse` is a boolean value. If set to True, then the iterable would be sorted in reverse (descending) order.

In your case, `iterable` is `list1`, `key` should be a function that returns the second element of the tuple (i.e., the score), and `reverse` should be `True` because you want to sort the scores in descending order. Here is how you can do it:

```python
list1 = sorted(list1, key=lambda x: x[1], reverse=True)
```

3. Finally, you need to convert `list1` back to a tuple and return it. You can convert the list to a tuple by using the `tuple()` function. Here is how you can do it:

```python
return tuple(list1)
```

So, the complete function `sort_grades(tup1)` would look like this:

```python
def sort_grades(tup1):
    list1 = list(tup1)
    list1 = sorted(list1, key=lambda x: x[1], reverse=True)
    return tuple(list1)
```

You can test this function with your example:

```python
tup1 = (('Bob', 47), ('Claire', 61), ('Dominic', 79))
print(sort_grades(tup1))  # prints (('Dominic', 79), ('Claire', 61), ('Bob', 47))
```

Knowee AI · Accepted Answer