Whose Error Is It?
Python printed this
TypeError: unsupported operand type(s) for +: 'int' and 'str'
What it meansPython will not add an integer and a string together because it does not convert types implicitly for the + operator.
The first thing to checkUsually one value came from input(), a file, or JSON as text; convert with int() for math, or use str() or an f-string when building a message.