Python将两个数组合并成一个数组，多维数组变成一维数组

1.extend方法

c1 = ["Red","Green","Blue"]c2 = ["Orange","Yellow","Indigo"]c1.extend(c2)c1 == ["Red","Green","Blue","Orange","Yellow","Indigo"]
1
2
3
4
1
2
3
4

2.直接相加

c1 = ["Red","Green","Blue"]c2 = ["Orange","Yellow","Indigo"]c3 = c1 + c2c3 == ["Red","Green","Blue","Orange","Yellow","Indigo"]
1
2
3
4
1
2
3
4

3.flatten

a = [[1,3],[2,4],[3,5]]a = array(a)a.flatten()array([1, 3, 2, 4, 3, 5])