The difference between python3.x:python:extend (extension) and append (append)

Python3.x:python:extend (extension) differs from the Append (append) 1, the difference:

The append () method adds a new element to the tail of the list. Only one parameter is accepted;

The Extend () method takes only one list as an argument and adds each element of the parameter to the original list;

2, Example:

List_extend = ['a','b','C']list_extend.extend (['D','e','F']) Print("list_extend:%s"%list_extend)#output Result: list_extend:[' A ', ' B ', ' C ', ' d ', ' e ', ' F ']List_append = ['a','b','C']list_append.append (['D','e','F']) Print("list_append:%s"%list_append)#output Result: list_append:[' A ', ' B ', ' C ', [' d ', ' e ', ' F ']

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The difference between python3.x:python:extend (extension) and append (append)