pytutorial/numpy/numerical_ranges​

Making a matrix from numerical ranges

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The goal

Making a matrix from numerical ranges...

Questions to David Rotermund

numpy.arange

numpy.arange([start, ]stop, [step, ]dtype=None, *, like=None)

Return evenly spaced values within a given interval.

arange can be called with a varying number of positional arguments:

arange(stop) : Values are generated within the half-open interval [0, stop) (in other words, the interval including start but excluding stop).

arange(start, stop) : Values are generated within the half-open interval [start, stop).

arange(start, stop, step) Values are generated within the half-open interval [start, stop), with spacing between values given by step.

For integer arguments the function is roughly equivalent to the Python built-in range, but returns an ndarray rather than a range instance.

When using a non-integer step, such as 0.1, it is often better to use numpy.linspace.