Beginner Blender Python Tutorial: Python Lists Example 1A (used in tutorial: https://youtu.be/-Gc3UHGoxgc)

example_1a.py

# give Python access to Blender's functionality
import bpy

# extend Python functionality to generate random numbers
import random

# create a list of coordinates
coordinates = []

coordinate_count = 10
for _ in range(coordinate_count):
    x = random.uniform(-5, 5)
    y = random.uniform(-5, 5)
    z = random.uniform(-5, 5)
    coordinates.append([x, y, z])

# add ico spheres into the scene using the list of coordinates
for i in range(len(coordinates)):
    # access the coordinate at index 'i'
    coord = coordinates[i]

    # access the coordinate components
    x = coord[0]
    y = coord[1]
    z = coord[2]

    bpy.ops.mesh.primitive_ico_sphere_add(radius=1, location=(x, y, z))