一、合并列表
1、最简单的,使用+连接符:
>>> a = [1,2,3] >>> b = [7,8,9] >>> a + b [1, 2, 3, 7, 8, 9]
2、使用extend()方法:
>>> a = [1,2,3] >>> b = [7,8,9] >>> a.extend(b) >>> a [1, 2, 3, 7, 8, 9]
3、最笨的方法:
>>> a = [1,2,3] >>> b = [7,8,9] >>> for i in b: ... a.append(i) ... >>> a [1, 2, 3, 7, 8, 9]
4、使用切片:
>>> a = [1,2,3] >>> b = [7,8,9] >>> a[0:0] = b >>> a [7, 8, 9, 1, 2, 3]
二、合并字典
1、使用dict()方法:
>>> a = {'a':1,'b':2,'c':3} >>> b = {'aa':11,'bb':22,'cc':33} >>> dict(a, **b) {'a': 1, 'b': 2, 'c': 3, 'aa': 11, 'bb': 22, 'cc': 33}
2、dict(a.items()+b.items()),只适用于Python2,Python3不支持:
>>> a = {'a':1,'b':2,'c':3} >>> b = {'aa':11,'bb':22,'cc':33} >>> dict(a.items()+b.items()) {'a': 1, 'aa': 11, 'c': 3, 'b': 2, 'bb': 22, 'cc': 33}
3、update()方法:
>>> a = {'a':1,'b':2,'c':3} >>> b = {'aa':11,'bb':22,'cc':33} >>> c = {} >>> c.update(a) >>> c.update(b) >>> c {'a': 1, 'b': 2, 'c': 3, 'aa': 11, 'bb': 22, 'cc': 33}