列表方法集合

～风介～

方法：

1. append(...)
   
2. L.append(object) -> None -- append object to end

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代码：

1. >>> myList = [1,2]
   
2. >>> myList.append({'Fish':1})
   
3. >>> myList
   
4. [1, 2, {'Fish': 1}]

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===
方法：

1. clear(...)
   
2.        L.clear() -> None -- remove all items from L

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代码：

1. >>> myList.clear()
   
2. >>> myList
   
3. []
   
4. >>>

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===
方法：

1. copy(...)
   
2.       L.copy() -> list -- a shallow copy of L

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代码：

1. >>> myList = [1, 2, {'Fish': 1}]
   
2. >>> newList = myList.copy()
   
3. >>> newList
   
4. [1, 2, {'Fish': 1}]
   
5. >>> del myList
   
6. >>> newList
   
7. [1, 2, {'Fish': 1}]
   
8. >>>

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===
方法：

1. count(...)
   
2.        L.count(value) -> integer -- return number of occurrences of value

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代码：

1. >>> myList = [1, 2, {'Fish': 1},1,1]
   
2. >>> myList.count(1)
   
3. 3
   
4. >>> myList.count({'Fish': 1})
   
5. 1
   
6. >>>

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===
方法：

1. extend(...)
   
2.        L.extend(iterable) -> None -- extend list by appending elements from the iterable

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代码：

1. >>> myList
   
2. [1, 2, {'Fish': 1}, 1, 1]
   
3. >>> myList.extend(['Good','Morning'])
   
4. >>> myList
   
5. [1, 2, {'Fish': 1}, 1, 1, 'Good', 'Morning']
   
6. >>>

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===
方法：

1. index(...)
   
2.        L.index(value, [start, [stop]]) -> integer -- return first index of value.
   
3.        Raises ValueError if the value is not present.

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代码：

1. >>> myList
   
2. [1, 2, {'Fish': 1}, 1, 1, 'Good', 'Morning']
   
3. >>> myList.index(1)
   
4. 0
   
5. >>> myList.index(1,1,5)
   
6. 3
   
7. >>> myList.index(1111)
   
8. Traceback (most recent call last):
   
9.   File "<pyshell#51>", line 1, in <module>
   
10.     myList.index(1111)
    
11. ValueError: 1111 is not in list
    
12. >>>

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===
方法：

1. insert(...)
   
2.        L.insert(index, object) -- insert object before index

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代码：

1. >>> myList
   
2. [1, 2, {'Fish': 1}, 1, 1, 'Good', 'Morning']
   
3. >>> myList.insert(0,'FishC')
   
4. >>> myList
   
5. ['FishC', 1, 2, {'Fish': 1}, 1, 1, 'Good', 'Morning']
   
6. >>> myList.insert(-1,'FishC')
   
7. >>> myList
   
8. ['FishC', 1, 2, {'Fish': 1}, 1, 1, 'Good', 'FishC', 'Morning']
   
9. >>>

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===
方法：

1. pop(...)
   
2.        L.pop([index]) -> item -- remove and return item at index (default last).
   
3.        Raises IndexError if list is empty or index is out of range.

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代码：

1. >>> myList
   
2. ['FishC', 1, 2, {'Fish': 1}, 1, 1, 'Good', 'FishC', 'Morning']
   
3. >>> myList.pop()
   
4. 'Morning'
   
5. >>> myList.pop(0)
   
6. 'FishC'
   
7. >>> myList
   
8. [1, 2, {'Fish': 1}, 1, 1, 'Good', 'FishC']
   
9. >>>

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===
方法：

1.   remove(...)
   
2.        L.remove(value) -> None -- remove first occurrence of value.
   
3.       Raises ValueError if the value is not present.

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代码：

1. >>> myList
   
2. [1, 2, {'Fish': 1}, 1, 1, 'Good', 'FishC']
   
3. >>> myList.remove(1)
   
4. >>> myList
   
5. [2, {'Fish': 1}, 1, 1, 'Good', 'FishC']
   
6. >>> myList.remove()
   
7. Traceback (most recent call last):
   
8.   File "<pyshell#64>", line 1, in <module>
   
9.     myList.remove()
   
10. TypeError: remove() takes exactly one argument (0 given)
    
11. >>>

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===
方法：

1. reverse(...)
   
2.        L.reverse() -- reverse *IN PLACE*

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代码：

1. >>> myList
   
2. [2, {'Fish': 1}, 1, 1, 'Good', 'FishC']
   
3. >>> myList.reverse()
   
4. >>> myList
   
5. ['FishC', 'Good', 1, 1, {'Fish': 1}, 2]
   
6. >>>

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===
方法：

1. sort(...)
   
2.        L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE*

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代码：

1. >>> myList = [1,2,1,2,3,5,9]
   
2. >>> myList.sort()
   
3. >>> myList
   
4. [1, 1, 2, 2, 3, 5, 9]
   
5. >>> myList = [1,2,1,2,3,5,9]
   
6. >>> myList.sort(reverse=True)
   
7. >>> myList
   
8. [9, 5, 3, 2, 2, 1, 1]
   
9. >>>

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Bash

我就想问问怎么插入图片的？{:1_1:}

Munly

谢谢分享

zdhmeng

get~

heatonlwm

好厉害学下

彼岸花316

谢谢分享，{:1_1:}