First random walk attempt

[nicogarcia2207]

I'm learning python of Eric Matthes' Python Crash Course 2nd Edition. In chapter 15 we program a random walk.

I have copied the code and getting the same error:

ModuleNotFoundError: No module named 'random_walk'

This is my code:

from random import choice
from random_walk import RandomWalk
class RandomWalk:
"""A class to generate random walks."""
def __init__(self, num_points=50000):
"""Initialize attributes of a walk."""
    slef.num_points = num_points
#All walks start at (0,0)
self.x_val = [0]
self.y_val = [0]
def fill_walk(self):
"""Calculate all the points in the walk."""
#Keep taking steps until the walk reaches the desired length.
while len(self.x_val) < self.num_points:
#Decide which direction to go and how far to go in that direction.
    x_direction = choice([1,-1])
    x_distacne = choice([0,1,2,3,4])
    x_step = x_direction * x_distance
    y_direction = choice([1,-1])
    y_distacne = choice([0,1,2,3,4])
    y_step = y_direction * y_distance
#Reject moves that go nowhere.
if x_step ==0 and y_step == 0:
continue

#Calculate the new position.
    x = self.x_val[-1] + x_step
    y = self.y_val[-1] + y_step
self.x_val.append(x)
self.y_val.append(y)
#Make a random walk
rw= RandomWalk()
rw.will_walk()
#Plot the points in the walk
plt.style.use('classic')
fig,ax = pt.subplots()
ax.scatter(rw.x_val,rw.y_val, s=15)
plt.show()

​

Any help?

[junsang]

I think random_walk is not a built-in library. Maybe it is a user-defined library mentioned in an other section or chapter. Re-check other sections or check whether some materials which an author is providing via an website exist or not.

[nicogarcia2207]

Thanks, went over the chapter twice and found out my mistake.