range()

The range function generates a sequence of numbers:

print( range(5))           # -> [0, 1, 2, 3, 4]
print( range( 1, 9))       # -> [1, 2, 3, 4, 5, 6, 7, 8]
print( range( 0, 10, 2))   # -> [0, 2, 4, 6, 8]