np.arange()

np.arange(start, stop, step)

Returns an array of numbers beginning with start, incrementing by step, and ending before stop. If start or step is omitted, the default values will be 0 and 1, respectively.

Input:: start : integer (default 0); The starting value of the sequence.; stop : integer; The end value of the sequence, which is not included in the output.; step : integer (default 1); The difference between each two consecutive values.
Returns:: An array of numbers from start to stop, incremented by step.
Return Type:: array

np.arange(1, 9, 2)

array([1, 3, 5, 7])

np.arange(10, 2, -3)

array([10, 7, 4])