Write a program in python that asks the user for the position of a virtual character on the x$-$axis in a coordinate

system and then allows the user to move the virtual character to the right or left, indicated by the

characters $r$ or $l.$ The user should be able to move the virtual character as often as they wish, but if the input is

neither $r$ nor l the program quits. The new position of the virtual character and instructions for the user are

written out in each iteration.

The valid range on the x$-$axis, which the virtual character can traverse, is from $1$ to $10.$ If the virtual character is

positioned at either end of the range it will not move when the user tries to move it out of the range.

Further information about the implementation:

If the initial position of the virtual character is not bertween $1$ and $10,$ the program should ask the

user again until the position is valid.

The current position is shown as $o,$ while other positions on the $x-$axis are shown as $x.$

You should implement the numbers $1$ and $10$ and the characters $r$ and l as constants. In Python, a

constant is a variable whose value will not change during execution of the program. It is a good rule to

use capital letters for naming constants.

You should use functions in your implementation. It is fine that your main program contains the loop,

but the body of the loop should, in most part, be a series of function calls.

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