Detailed explanation of pop function and append function in python

This article mainly introduces the detailed explanation of the pop function and append function in python. It has certain reference value. Now I share it with you. Friends in need can refer to it

pop() function

1. Description

pop() function is used to remove an element from the list (default is the last element ), and returns the value of the element.

Syntax

##pop() method syntax:

list.pop(obj=list[-1])

2. Parameter

obj – Optional parameter, the object to remove the list element.

3. Return value

This method returns the element object removed from the list.

4. Example

The following example shows how to use the pop() function:

#!/usr/bin/python
aList = [123, 'xyz', 'zara', 'abc'];
print "A List : ", aList.pop();
print "B List : ", aList.pop(2);

The output result of the above example is as follows:

A List : abc
B List : zara

##append() function

1. Description

The Python list append() method is used to append (add) the incoming object to an existing list.

2. Syntax

The following is the syntax of the append() method-

list.append(obj)
Python

3. Parameters

obj - This is the object to be added to the list.

4. Return value

This method does not return any value, but updates the existing list.

5. Example

The following example shows the usage of the append() method.

#!/usr/bin/python3
list1 = ['C++', 'Java', 'Python']
list1.append('C#')
print ("updated list : ", list1)
Python

When running the above program, it produces the following result-

updated list : ['C++', 'Java', 'Python', 'C#']

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