Python Create Float Range for Beginners – Python Tutorial

By | October 22, 2019

We usually use python range() function to create an integer sequence, however, this function can not use float number. If you want to use float number to create a float sequence, how to do? In this tutorial, we will introduce you how to do.

python create float range

Syntax of range

range(start, stop[, step])

Here start, stop and step are all integer, you can not use a float number. For example:

X = range(0.1, 10.0, 0.2)
print(X)

Run this python script, you will get error:

TypeError: ‘float’ object cannot be interpreted as an integer

How to create float range?

We can use numpy.arange() function.

Syntax of numpy.arange()

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

Here start, stop and step can be float number, here is an example:

import numpy as np
X = np.arange(0.1, 10.0, 0.2)
print(X)

Then you will get result like:

[0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5
 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 5.7 5.9 6.1 6.3 6.5 6.7 6.9 7.1
 7.3 7.5 7.7 7.9 8.1 8.3 8.5 8.7 8.9 9.1 9.3 9.5 9.7 9.9]

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