Python3 List append() Method
Python3 ListsDescription
The append() method is used to add a new object at the end of the list.
Syntax
Syntax of the append() method:
list.append(obj)
Parameters
- obj -- The object to be added to the end of the list.
Return Value
This method has no return value, but it modifies the original list.
Example
The following example demonstrates how to use the append() function:
Example
#!/usr/bin/python3
list1 = ['Google', 'Example', 'Taobao']
list1.append('Baidu')
print ("Updated list : ", list1)
list1 = ['Google', 'Example', 'Taobao']
list1.append('Baidu')
print ("Updated list : ", list1)
The output of the above example is as follows:
更新后的列表 : ['Google', 'Example', 'Taobao', 'Baidu']
A queue is a first-in, first-out (FIFO) data structure. We can use a list to implement the basic functionality of a queue.
append()The method adds an element to the end of the queue.pop()The method removes an element from the front of the queue and returns it.
Example
queue = []
# Add elements to the end of the queue
queue.append('A')
queue.append('B')
queue.append('C')
# Remove elements from the front of the queue and return them
print(queue.pop(0)) # A
print(queue.pop(0)) # B
print(queue.pop(0)) # C
# Add elements to the end of the queue
queue.append('A')
queue.append('B')
queue.append('C')
# Remove elements from the front of the queue and return them
print(queue.pop(0)) # A
print(queue.pop(0)) # B
print(queue.pop(0)) # C
In the above example, we created an empty list as a queue, then used the append() method to add three elements to the end of the queue. Next, we used the pop() method to remove elements from the front of the queue and return them. Since a queue is a first-in, first-out data structure, the output we get is 'A', 'B', and 'C'.
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