Python does not automatically convert types during string concatenation in weakly typed languages ​​like JS or PHP, but directly reports an error. The only way to solve this problem is to convert the int into a string in advance and then concatenate the strings.

Execution result:

Direct error: TypeError: cannot concatenate 'str' and 'int' objects

Solution This method only converts num to string type in advance. You can use the bytes function to convert int type to string type. (You can also use the built-in function str for conversion)

Code:

The results are as follows:

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