1 class list(object):
 2     """
 3     Built-in mutable sequence.
 4     
 5     If no argument is given, the constructor creates a new empty list.
 6     The argument must be an iterable if specified.
 7     """
 8     def append(self, *args, **kwargs): # real signature unknown
 9         """
 
 Append object to the end of the list. """
10         pass
11 
12     def clear(self, *args, **kwargs): # real signature unknown
13         """ Remove all items from list. """
14         pass
15 
16     def copy(self, *args, **kwargs): # real signature unknown
17         """ Return a shallow copy of the list. 
 
"""
18         pass
19 
20     def count(self, *args, **kwargs): # real signature unknown
21         """ Return number of occurrences of value. """
22         pass
23 
24     def extend(self, *args, **kwargs): # real signature unknown
25         """ Extend list by appending elements from the iterable. 
 
"""
26         pass
27 
28     def index(self, *args, **kwargs): # real signature unknown
29         """
30         Return first index of value.
31         
32         Raises ValueError if the value is not present.
33         """
34         pass
35 
36     def insert(self, *args, **kwargs): # real signature unknown
37         """ Insert object before index. """
38         pass
39 
40     def pop(self, *args, **kwargs): # real signature unknown
41         """
42         Remove and return item at index (default last).
43         
44         Raises IndexError if list is empty or index is out of range.
45         """
46         pass
47 
48     def remove(self, *args, **kwargs): # real signature unknown
49         """
50         Remove first occurrence of value.
51         
52         Raises ValueError if the value is not present.
53         """
54         pass
55 
56     def reverse(self, *args, **kwargs): # real signature unknown
57         """ Reverse *IN PLACE*. """
58         pass
59 
60     def sort(self, *args, **kwargs): # real signature unknown
61         """ Stable sort *IN PLACE*. """
62         pass

插入

#插入 insert
a = [i for i in range(3)]
a.insert(1,4)
print(a) #[0, 4, 1, 2]

#extend
a = [0,1]
a.extend([2,3])
print(a) #[0,1,2,3]

刪除

#pop
a = [3,4,5]
deleted_element = a.pop(1)
print(deleted_element) #4
print(a) #[3,5]

#pop預設刪除最後一個元素
a = [1,2,3]
deleted_item = a.pop()
print(deleted_item) #3
print(a) #[1,2]

#remove 按元素刪除
a = [1,2,2,3]
a.remove(2)
print(a) #[1,2,3]

#clear 清空
a = [1,2,3]
a.clear()
print(a) #[]

#del 刪除
a = [1,2,3]
del a
print(a) #NameError: name 'a' is not defined

#del 切片刪除
a = [1,2,3,4]
del a[1:]
print(a) #[1]

將字串轉化為列表

#list
a = '12'
a = list(a)
print(a) #['1','2']

#切片
a = []
a[0:2] = '12'
print(a) #['1','2']

#以上就算序號超過字串長度也沒關係
a = []
a[0:3] = '12'
print(a) #['1','2']

#字串長度超過所給序號也沒關係g
a = []
a[0:2]='1234'
print(a) #['1', '2', '3', '4']

#對於列表賦值也是一樣
a = []
a[0:1] = [i for i in range(10)]
print(a) #[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

公共方法

len, count

排序

#sorted 不改變原字串順序，sort改變原字串順序，其他一樣
import random
a = [i for i in range(10)]
random.shuffle(a)
print(a) #[7, 4, 5, 9, 0, 1, 2, 8, 6, 3]

print(sorted(a)) #[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
print(a) #[7, 4, 5, 9, 0, 1, 2, 8, 6, 3]
print(sorted(a, reverse = True)) #[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

print(a.sort()) #None
print(a) #[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
a.sort(reverse = True)
print(a) #[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

反轉

reverse
a = [7, 4, 5, 9, 0, 1, 2, 8, 6, 3]
a.reverse()
print(a) #[3, 6, 8, 2, 1, 0, 9, 5, 4, 7]