Python3 List extend() Method
Python3 ListsDescription
The extend() function is used to append multiple values from another sequence to the end of a list at once (extending the original list with a new list).
Syntax
extend() method syntax:
list.extend(seq)
Parameters
- seq -- A sequence of elements, which can be a list, tuple, set, or dictionary. If it is a dictionary, only the keys will be added as elements to the end of the original list in order.
Return Value
This method has no return value, but it adds new list content to the existing list.
Example
The following example demonstrates how to use the extend() function:
Example
#!/usr/bin/python3
list1 = ['Google', 'Example', 'Taobao']
list2=list(range(5)) # Create a list of 0-4
list1.extend(list2) # Extend the list
print ("Extended list:", list1)
The output of the above example is as follows:
扩展后的列表： ['Google', 'Example', 'Taobao', 0, 1, 2, 3, 4]
Different data types:
Example
#!/usr/bin/python3
# Language list
language = ['French', 'English', 'German']
# Tuple
language_tuple = ('Spanish', 'Portuguese')
# Set
language_set = {'Chinese', 'Japanese'}
# Add tuple elements to the end of the list
language.extend(language_tuple)
print('New list:', language)
# Add set elements to the end of the list
language.extend(language_set)
print('New list:', language)
新列表: ['French', 'English', 'German', 'Spanish', 'Portuguese'] 新列表: ['French', 'English', 'German', 'Spanish', 'Portuguese', 'Chinese', 'Japanese']Other Extensions