list.reverse() method
The list.reverse() method in Python, reverses the order of the elements in a list.
reverse a list
To reverse a list in Python, use the reverse() method of Python lists as shown below.
# reverse a list in python
abc = ['a', 'b', 'c']
abc.reverse()
print(abc)
In this example, the list abc contains the three string values a, b and c.
Then, the reverse() method is called on the abc list.
Finally, the reversed list is printed and this results in the elements shown in reversed order.
['c', 'b', 'a']
syntax of list.reverse()
The syntax of the reverse() method is:
list.reverse()
arguments of list.reverse()
The list.reverse() method doesn't take any arguments.
If an argument is given, a TypeError exception is raised.
TypeError: list.reverse() takes no arguments (1 given)
return values of list.reverse()
The reverse() method doesn't return any value. It updates the list it is called on.
time complexity
The time complexity of the list.reverse() method is O(n).
FAQ
How do you reverse a list in Python?
To reverse a list in Python, use the reverse() method of Python lists as shown above.
What does list.reverse() do?
The list.reverse() method in Python reverses the order of the elements in a list. For example ['a', 'b', 'c'] will result in ['c', 'b', 'a'].
What is the time complexity of the list.reverse() method in Python?
The time complexity of the list.reverse() method is O(n).
What is the reverse method in Python?
The reverse() method is a Python list method. It reverses the order of elements in the list. For example ['a', 'b', 'c'] turns into ['c', 'b', 'a'].
What is the difference between reversed() and list.reverse() in Python?
The difference is that list.reverse() modifies the list it is called on. The reversed() method returns an iterator to iterate through the list in reverse order instead.