【序列】相加

print([1,2,3]+[4,5,6])print('hello,'+'world')#列表和字符串是不能相加的 print([1,2,3]+'world')

输出：

Traceback (most recent call last):[1, 2, 3, 4, 5, 6]  File "F:/python/序列相加.py", line 5, in <module>    print([1,2,3]+'world')TypeError: can only concatenate list (not "str") to listhello,world

注：列表和字符串是不能相加的