“bad operand type for unary -: 'str'”错误意味着你尝试对一个字符串(str)执行一元负号(-)操作,但字符串类型不支持这种操作。在Python等编程语言中,一元负号通常用于对数字类型(如整数或浮点数)执行取反操作。 2. 常见场景 这个错误通常发生在以下几种场景中: 误用变量类型:你可能原本想对一个数字变量执行...
bad operand type for unary +: str 错误提示的含义 在Python 3 中,bad operand type for unary +: str 错误提示通常出现在以下情况: 运算表达式不正确:运算表达式中包含一个或多个无效的操作数,如+运算符只能连接两个可相等的值,但您输入的操作数却不相等。 输入数据类型不匹配:您输入的数据类型与运算要求的...
问题产生背景 在执行对字符串的连接操作时报错TypeError: bad operand type for unary +: 'str' s='A'+'B'+'C'+'D'+'E' 解决方案:增加换行符(对的,这里就是这么简单。。。) s='A' \+'B' \+'C' \+'D' \+'E' 没了,其他的可能,或许可以在下面这里找到 https://stackoverflow.com/questions...
也就是逗号后不能紧跟着+号。
Example of TypeError: bad operand type for unary ‘str’ One example of type error isTypeError: bad operand type for unary +: ‘str’it is raised when we use the unary plus operator (+) on a string value. The unary plus operator(+) shows a positive value, and it is recommended to ...
forninnew_users:ifn.lower()incurrent_users_lower:print(f'sorry,{n}, that name is taken')# ...
TypeError: bad operand type for unary -: 'list' Bug fix If you have already identified the reason, you can provide the information here. If you are willing to create a PR to fix it, please also leave a comment here and that would be much appreciated!
(most recent call last): File "/usr/sbin/checkrestart", line 412, in <module> main() File "/usr/sbin/checkrestart", line 150, in main dpkgQuery = ["dpkg", "--listfiles ", + package.name] TypeError: bad operand type for unary +: 'str' It looks like either the comma or '+'...
This issue maybe silly, I'm new to this area, Sorry to have your time. When I run into the TrainModel.ipynb def draw_image_with_label(img, label, prediction=None): theta = label * 0.69 #Steering range for the car is +- 40 degrees -> 0.69...