Sometimes, we want the user to enter a number. Here is an example:

If our input is 5, we expect the result to be 10, not 55!

The input() function returns a value that is a string type, but we want an integer.

We can't ask the input to returns numbers instead of strings, but we can convert the output of input from a string to a number.

We do this using a function called int().

It still doesn't work!

However, the error gives us a clue, we can't concatenate two values with different types.

To fix this we convert the integer to a string