TypeError: sequence item 0: expected str instance, int found
背景：想要将一个纯数字的列表转换为一个数字字符串。python
''.join(nums)
结果报错：ide
TypeError: sequence item 0: expected str instance, int found
才想起来，想要拼接的话得是字符串类型，转换一下。spa
''.join(map(str, nums))
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