python append()函式和extend()函式
2. append()
方法向列表的尾部新增一個新的元素。只接受一個引數。
3. extend()
方法只接受一個列表作為引數,並將該引數的每個元素都新增到原有的列表中。
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append()用法示例:
>>> mylist = [1,2,0,'abc']
>>> mylist
[1, 2, 0, 'abc']
>>> mylist.append(4)
>>> mylist
[1, 2, 0, 'abc', 4]
>>> mylist.append('haha')
>>> mylist
[1, 2, 0, 'abc', 4, 'haha']
>>>
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extend()用法示例:
>>> mylist
[1, 2, 0, 'abc', 4, 'haha']
>>> mylist.extend(['lulu'])
>>> mylist
[1, 2, 0, 'abc', 4, 'haha', 'lulu']
>>> mylist.extend([aaa,'lalalala'])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'aaa' is not defined
>>> mylist.extend(['123123','lalalala'])
>>> mylist
[1, 2, 0, 'abc', 4, 'haha', 'lulu', '123123', 'lalalala']
>>> mylist.extend([111111,222])
>>> mylist
[1, 2, 0, 'abc', 4, 'haha', 'lulu', '123123', 'lalalala', 111111, 222]
>>>
OVER!