TypeError: can only concatenate str (not “list“) to str（报错解决办法）

时间长了忘记list使用了，查看了下list输出没想到还遇到错误了。
代码：

planes = [64, 128, 256, 512]in_planes = planes[0:-1]
out_planes = planes[1:]
print("in_planes:" + in_planes)
print("out_planes:" + out_planes)

出现这样的问题：
类型错误:只能连接str(不是“列表”)到str

Traceback (most recent call last):File "demo.py", line 5, in <module>print("in_planes:" + in_planes)
TypeError: can only concatenate str (not "list") to str

解决办法：将list 转换为str即可。

in_planes = planes[0:-1]
out_planes = planes[1:]
print("in_planes:" + str(in_planes))
print("out_planes:" + str(out_planes))

参考：
https://blog.csdn.net/a136332462/article/details/106133033/

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TypeError: can only concatenate str (not “list“) to str（报错解决办法）

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