如何在Python中连接两个列表?
例子:
listone = [1, 2, 3]
listtwo = [4, 5, 6]
预期结果:
>>> joinedlist
[1, 2, 3, 4, 5, 6]
如何在Python中连接两个列表?
例子:
listone = [1, 2, 3]
listtwo = [4, 5, 6]
预期结果:
>>> joinedlist
[1, 2, 3, 4, 5, 6]
当前回答
可以使用集合获取唯一值的合并列表
mergedlist = list(set(listone + listtwo))
其他回答
a = [1, 2, 3]
b = [4, 5, 6]
c = a + b
print(c)
输出
>>> [1, 2, 3, 4, 5, 6]
在上面的代码中,“+”运算符用于将两个列表连接成一个列表。
另一种解决方案
a = [1, 2, 3]
b = [4, 5, 6]
c = [] # Empty list in which we are going to append the values of list (a) and (b)
for i in a:
c.append(i)
for j in b:
c.append(j)
print(c)
输出
>>> [1, 2, 3, 4, 5, 6]
list(set(listone) | set(listtwo))
上述代码不保留顺序,并从每个列表中删除重复项(但不从连接列表中删除)。
您可以使用在列表对象上定义的append()方法:
mergedlist =[]
for elem in listone:
mergedlist.append(elem)
for elem in listtwo:
mergedlist.append(elem)
您可以简单地使用+或+=运算符,如下所示:
a = [1, 2, 3]
b = [4, 5, 6]
c = a + b
Or:
c = []
a = [1, 2, 3]
b = [4, 5, 6]
c += (a + b)
此外,如果希望合并列表中的值是唯一的,可以执行以下操作:
c = list(set(a + b))
如果不能使用加号运算符(+),则可以使用运算符导入:
import operator
listone = [1,2,3]
listtwo = [4,5,6]
result = operator.add(listone, listtwo)
print(result)
>>> [1, 2, 3, 4, 5, 6]
或者,您也可以使用__add__dunder函数:
listone = [1,2,3]
listtwo = [4,5,6]
result = list.__add__(listone, listtwo)
print(result)
>>> [1, 2, 3, 4, 5, 6]