How to use random numbers that executes a one dimensional random walk in python?

Start with a one dimensional space of length m, where m = 2 * n + 1. Take a step either to the left or to the right at random, with equal probability. Continue taking random steps until you go off one edge of the space, for which I'm using while 0 <= position < m.

We have to write a program that executes the random walk. We have to create a 1D space using size n = 5 and place the marker in the middle. Every step, move it either to the left or to the right using the random number generator. There shuld be an equal probability that it moves in either direction.

I do not know how to start this. Please help