the difference between random and randrange

random_vs_randrange

# import what you need
>>> from random import random, randrange
# https://docs.python.org/3/library/random.html#random.random
# Return the next random floating point number in the range [0.0, 1.0).
>>> random()
0.04458157505033977
>>> random()
0.11730160701010572
# range gives you a list/iterable depending in the Python version and is often used for iterations
# http://pythoncentral.io/pythons-range-function-explained
# if you just give it a number it starts at 0 and ends at the number-1
>>> list(range(10))
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> list(range(2))
[0, 1]
# https://docs.python.org/3/library/random.html#random.randrange
# Return a randomly selected element from range(start, stop, step).
>>> randrange(10)
0
>>> randrange(10)
2
>>> randrange(10)
7
# you can accomplish the same thing with range, however it does not include steps
>>> int(random()*10)
0
>>> int(random()*10)
8
>>> int(random()*10)
4
# a if you specify a start and stop, it will limit it to a number
# that would have been in the equivalent range call
>>> list(range(5, 10))
[5, 6, 7, 8, 9]
>>> randrange(5, 10)
6
>>> randrange(5, 10)
8
>>> randrange(5, 10)
9
# you can further limit your selection with steps
# in this case, it has an interval of 10
>>> list(range(5, 100, 10))
[5, 15, 25, 35, 45, 55, 65, 75, 85, 95]
>>> randrange(5, 100, 10)
65
>>> randrange(5, 100, 10)
95