How to use sort in python for ascending order

Use Python's sort() function to sort the list in ascending order. Just call sort() without parameters. Syntax: list.sort(). The sort() method is based on element comparison and can handle numbers, strings, and other comparable objects. It modifies the original list. You can use the reverse=True parameter to sort in reverse order. Through the key parameter, you can specify a comparison function to implement custom sorting logic. The sort() function makes it easy to sort a list in ascending, descending, or custom order.

Using the Python sort() function for ascending order

Python’s sort() function allows you to sort iterable objects (such as a list or tuple) in ascending order.

Syntax:

<code class="python">list.sort()</code>

Usage:

To sort the list in ascending order, just call the sort() function, No need to pass any parameters.

<code class="python">my_list = [5, 3, 1, 2, 4]
my_list.sort()

print(my_list)  # 输出：[1, 2, 3, 4, 5]</code>

Note:

• sort() function modifies the original list.
• The sorting method is based on the comparison of elements. For custom objects, you need to implement the __lt__() method to define comparison logic.
• sort() can handle numbers, strings, and other comparable objects.

Reverse order:

To sort the list in reverse order (descending order), you can use reverse=True Parameters:

<code class="python">my_list.sort(reverse=True)</code>

Custom sorting:

For situations where custom sorting rules are required, you can use the key parameter to specify a comparison function that accepts a single element and returns the key used for comparison.

<code class="python">def my_sort_func(x):
    return x[1]

my_list = [('Item 1', 10), ('Item 2', 5), ('Item 3', 15)]
my_list.sort(key=my_sort_func)

print(my_list)  # 输出：[('Item 2', 5), ('Item 1', 10), ('Item 3', 15)]</code>

By using the sort() function, you can easily sort a Python list in ascending or descending order, as well as customize the sorting logic.

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