请问一个基础的python list问题

Question

xx = []
for i in range(-5, 10):
    xx = xx.append(i)

print(xx)

以上代码，在运行后，报错如下：

Traceback (most recent call last):
  File "D:\Python\Project\Retest\test.py", line 20, in <module>
    xx = xx.append(i)
AttributeError: 'NoneType' object has no attribute 'append'

请问，list变量放到函数中不生效吗？

Answer 1

写错啦，
应该是这样的：

for i in range(-5, 10):
    xx.append(i)