列表

中括号括起，逗号隔开，元素类型不限

subjects = [1, 3.0, 'a', True]
print(subjects[0])
print(subjects[1])
print(subjects[2])
print(subjects[3])
print(type(subjects[0]))
print(type(subjects[1]))
print(type(subjects[2]))
print(type(subjects[3]))
print(type(subjects))

1
3.0
a
True
<class 'int'>
<class 'float'>
<class 'str'>
<class 'bool'>
<class 'list'>

打印列表全体

subjects = [2, 0.2, 'True', True]
print(subjects)

[2, 0.2, 'True', True]

列表元素数

numbers = [1, 2, 3]
print(len(numbers))

3

追加元素

numbers = [1, 3, 5]
print(numbers)
numbers.append(7)
print(numbers)

[1, 3, 5]
[1, 3, 5, 7]

插入元素

numbers = [2, 4, 8]
print(numbers)
numbers.insert(2, 6)
print(numbers)

[2, 4, 8]
[2, 4, 6, 8]

移除元素

numbers = [1, 3, 5, 7]
print(numbers)
numbers.remove(5)
print(numbers)

[1, 3, 5, 7]
[1, 3, 7]

移除指定位置的元素

numbers = [1, 3, 5, 7]
print(numbers)
del numbers[1]
print(numbers)

[1, 3, 5, 7]
[1, 5, 7]

确认要素有无

numbers = [1, 3, 5, 7]
n = int(input('输入整数：'))
if n in numbers:
    print('在列表中')
else:
    print('不在列表中')

输入整数：7
在列表中

字符串转列表

s = input('输入字符串：')
print('转换为列表')
print(list(s))

输入字符串：333
转换为列表
['3', '3', '3']

整数列表

range(start, stop)

计数从 start 开始，不输入start则从 0 开始，到 stop 结束，但不包括 stop

print(type(range(6)))

<class 'range'>

注意range()的返回值是range型，如果要输出列表则需要用list()来转换

print(list(range(6)))

[0, 1, 2, 3, 4, 5]